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Juncus effusus

L. (1753)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Juncaceae Genus: Juncus

bog rush, common rush, goza grass, Japanese mat rush, soft rush

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Description

Key Characters:

Growth Form: Perennial herbs, rhizomes stout, covered with overlapping scales.

Stems: Stems crowded along rhizome, reddish brown to purple at base, striate, terete (cylindrical), 4–8 dm long, pith solid.

Roots: Roots thick.

Leaves: Leaves simple. Leaves basal, scale-like, bladeless. Margins entire. Sheaths dark reddish brown to purple at base, paler toward apex. Stipules absent.

Flowers: Flowers numerous in usually contracted or sometimes more open, cymose inflorescences up to 8 cm long, appearing lateral, lowest bract terete (cylindrical), appearing to be a continuation of the stem, bracteoles 3, colorless, ca. ¼ as long as perianth. Flowers bisexual (perfect). Perianth parts pale, rigid, narrow, not obscuring the capsule, outer ones ca. 2.5 mm long, inner ones ca. 2 mm long, about as long as capsule, apex long acuminate. Stamens 3; anthers and filaments about equal. Pollen grains remaining in tetrads, surrounded by a common exine. Ovary superior, carpels 1.

Fruit: Capsules pale to medium brown; in contrast to the pale perianth; shiny; 3–celled; ovoid; apex truncate. Seeds pale brown; ca. 0.5 mm long; ca. 3 times longer than wide.

Ploidy: 2n = 40; 42; 80

Habitat: Cultivated and naturalized along margins of ponds and streams; in open boggy sites; and wet areas along trails.

Elevation Range: 1,000–2,000 m.

Historical Distribution

Images

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Accepted Subtaxa (in Hawai'i) (1)

Juncus effusus subsp. effusus

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean
Wind
Birds
Other Animals

Vegetative Reproduction

Pollinators

Specimens

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Bibliography

Name Published In: Sp. Pl.: 326 (1753)

Other References

Wagner et al. 1990:1453 (Mo, M, H); Staples & Herbst 2005:674 (DESCR); Imada 2007:37 (O); Frohlich & Lau 2012:40 (K); Faccenda, Arthur, et al. 2025:188 (KEY)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Juncus effusus L. PRESERVED_SPECIMEN G R Cooley|W E Bonsey AK 12/22/1965
2 Juncus effusus L. east of pepeopae toward bare mountain, molokai, territory of hawaii Foster Botanical Garden #FL 2781 PRESERVED_SPECIMEN o. degener 9834 CM 5/9/1928
3 Juncus effusus L. growing between the paved sidewalk and a garden wall. kekuanoni street, pauoa valley, honolulu. wet ledges PRESERVED_SPECIMEN bush, wm 1179 FH 3/4/1980
4 Juncus effusus L. island of maui, along waterline through rain forest. PRESERVED_SPECIMEN george r. cooley; w. edwin bonsey 11187 GRCH 12/22/1965
5 Juncus effusus L. molokai: along pig's trail, puu o kaeha, kawela Grassy shrubby slope PRESERVED_SPECIMEN h. st. john 12512 NY 12/23/1932
6 Juncus effusus L. east of pepeopae toward bare mountain, molokai, territory of hawaii In boggy place PRESERVED_SPECIMEN o. degener 9834 NY 5/9/1928
7 Juncus effusus L. Ahualoa, coffee farm irrigation pond. Growing on moist, sandy soil on ban, moist, sandy soil PRESERVED_SPECIMEN K. Uyehara s.n. Oahu PTBG 11/24/2005
8 Juncus effusus L. At 3115 Kaloaluiki Place, in the Manoa Valley, Honolulu. Cultivated. PRESERVED_SPECIMEN Alice Kadowaki sub George Staples 593 Oahu PTBG 4/14/1990
9 Juncus effusus L. West Maui NAR Survey, Honokowao section, along Puu Kukui trail, transect 9, near rain gauge at Nakalalu. In Metrosideros mixed montane wet forest. PRESERVED_SPECIMEN Steve Perlman 10599 Maui PTBG 4/12/1988
10 Juncus effusus L. W. Maui, Honokohau. Growing along th e Pu'u Kukui Trail in the top bog. PRESERVED_SPECIMEN Hank Oppenheimer H50047 Maui PTBG 5/26/2000
11 Juncus effusus L. Kamakou Preserve; wets fork of stream just east of Kawela Ridge, along upper reaches of gulch and ridge leading to Puu o Kaeha. Alt. 970 - 1060 m. Low, mixed wet forest. In stream bed. PRESERVED_SPECIMEN David H. Lorence 5627 Molokai PTBG 10/22/1987
12 Juncus effusus L. Kokee, Pihea Trail. Metrosideros- Dicranopteris linearis montane wet forest. PRESERVED_SPECIMEN Natalia Tangalin 671 Kauai PTBG 1/5/2006
13 Juncus effusus L. Puu Makaala NAR survey transect 6, off Dissappointment Rd. In Metrosideros-Cibotium montane wet forest. PRESERVED_SPECIMEN Steve Perlman 10475 Hawaii PTBG 2/10/1988
14 Juncus effusus L. Kokee State Park, between Pihea Trail and Pihea Peak. Metrosideros dominated wet forest. PRESERVED_SPECIMEN Tim Flynn 7395 Kauai PTBG 5/21/2008
15 Juncus effusus L. Kohala Mts., Awini Ridge, PTBG preserve. On plateau above & to the southeast of Waipahi Stream. In swampy areas between ohia "tussocks". PRESERVED_SPECIMEN Tim Flynn 1407 Hawaii PTBG 11/21/1985
16 Juncus effusus L. Beside Alakai Swamp trail, in the first bog encountered along the trail. Infestation spreading along Alakai swamp and Pihea trails from the densest infestation near Pihea peak. Growing in disturbed soil/pools of water under open open canopy in bog vegetation along the Alakai swamp trail where boardwalk is broken. PRESERVED_SPECIMEN Kelsey Brock 705 Kauai PTBG 9/1/2015
17 Juncus effusus L. east of pepeopae toward bare mountain Boggy place PRESERVED_SPECIMEN o. degener 9834 Molokai US 5/9/1928
18 Juncus effusus L. Mount Kaala, Waianae Mts. On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN L. Crago, C. Imada & C. McGuire 2005-238 Oahu US 11/22/2005
19 Juncus effusus L. kokee, pihea trail. Montane wet forest PRESERVED_SPECIMEN n. tangalin & s. p. perlman 671 Kauai US 1/5/2006
20 Juncus effusus L. puu of kaeha, kawela PRESERVED_SPECIMEN h. st. john, r. j. baker, j. w. coulter & f. r. fosberg 12512 Molokai US 12/23/1932
21 Juncus effusus L. Kokee State Park, between Pihea Trail and Pihea Peak. Wet forest PRESERVED_SPECIMEN T. W. Flynn, A. Vernon & D. Boucher 7395 Kauai US 5/21/2008
22 Juncus effusus L. hilo forest reserve, hilo watershed, along jeep trail to wailuku stream. PRESERVED_SPECIMEN d. r. herbst & s. ishikawa 5147 Hawaii US 1/14/1975
23 Juncus effusus L. kokee state park, between pihea trail and pihea peak. PRESERVED_SPECIMEN t. w. flynn, a. vernon & d. boucher 7395 Maui US 5/21/2008
24 Juncus effusus L. honokowai section, w maui nar, along puu kukui trail, transect 9, near rain gauge at nakalalu PRESERVED_SPECIMEN s. p. perlman, r. bartlett & m. bruegmann 10599 Maui US 4/12/1988
25 Juncus effusus L. mount kaala, waianae mts. On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN l. crago, c. imada & c. mcguire 2005-238 Oahu US 11/22/2005
26 Juncus effusus L. ahualoa, coffee farm irrigation pond. On moist, sandy soil on bank. PRESERVED_SPECIMEN k. uyehara s.n. Hawaii US 9/24/2005
27 Juncus effusus L. kahuku-ainapo trail, kahuku, mauna loa PRESERVED_SPECIMEN e. y. hosaka 1457 Hawaii US 7/28/1936
28 Juncus effusus L. puna district, kulani trail, ola`a forest reserve, ola`a PRESERVED_SPECIMEN h. st. john 24988 Kauai US 1/28/1953
29 Juncus effusus L. PRESERVED_SPECIMEN otto degener 9834 WIS 5/9/1928
30 Juncus effusus L. Mount Kaala, Waianae Mts., Oahu, Hawaii Growing on the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN Crago, L.M. 2005-238 Oahu BISH 11/22/2005
31 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN Flynn, T. Collector Number: 7395 Kauai BISH 5/21/2008
32 Juncus effusus L. West Maui, Puu Kukui Trail. In open bogs. PRESERVED_SPECIMEN Hobdy, R.W. 3234 Maui BISH 7/31/1991
33 Juncus effusus L. ahualoa, coffee farm irrigation pond Pond dominated by Schoenoplectus mucronatus (70% cover), with Eleocharis obtusa, Ludwigia palustris, Cuphea carthagenensis, Cyperus halpan, Juncus acuminatus. PRESERVED_SPECIMEN uyehara, k.j. collector number: s.n. Hawaii BISH 9/24/2005
34 Juncus effusus L. piihonua; hilo forest reserve, site 23 os Stunted ohia wetland dieback; assoc. spp.: Metrosideros polymorpha, Ilex anomala, Myrsine lessertiana, M. sandwicensis, Cheirodendron trigynum & Pelea clusiifolia. Soil a moderately deep yet poorly drained organic/ash found on a pahoehoe flow. PRESERVED_SPECIMEN adee, k.t. collector number: s.n. Hawaii BISH 6/29/1979
35 Juncus effusus L. Waimea District: Beside Alakai Swamp trail, in the first bog encountered along the trail. Infestation spreading along Alakai swamp and Pihea trails from the densest infestation near Pihea peak. Growing in disturbed soil/pools of water under open open canopy in bog vegetation along the Alakai swamp trail where boardwalk is broken. Metrosideros polymorpha, Drosera anglica, Xyris complanata, Dicranopteris linearis. PRESERVED_SPECIMEN Brock, K. 705 Kauai BISH 9/1/2015
36 Juncus effusus L. mount kaala, waianae mts., oahu, hawaii PRESERVED_SPECIMEN crago, l.m. imada, c.; mcguire, c. collector number: 2005-238 Hawaii BISH 11/22/2005
37 Juncus effusus L. Kalaupapa; Puu Alii 2, near cabin PRESERVED_SPECIMEN Wysong, M.L. 716 Molokai BISH 3/24/2005
38 Juncus effusus L. unknown PreservedSpecimen Rock, J.F.C. Collector Number: s.n. BISH Specimen
39 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Wet forest PRESERVED_SPECIMEN T. W. Flynn, A. Vernon & D. Boucher 7395 Kauai HAPI 5/21/2008
40 Juncus effusus L. Boundary road between Kapapala Forest Reserve and Kapapala Ranch, Kau District On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN L. Crago, C. Imada & C. McGuire 2005-238 Hawaii HAPI 11/22/2005
41 Juncus effusus L. keauhou ranch, kau district, beside puu oo trail PRESERVED_SPECIMEN cuddihy, l.w. collector number: 462 Oahu BISH 5/20/1980
42 Juncus effusus L. kokee state park, between pihea trail and pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN flynn, t. collector number: 7395 Kauai BISH 5/21/2008
43 Juncus effusus L. Piihonua; Hilo Forest Reserve, Site 23 OS Stunted ohia wetland dieback; assoc. spp.: Metrosideros polymorpha, Ilex anomala, Myrsine lessertiana, M. sandwicensis, Cheirodendron trigynum & Pelea clusiifolia. Soil a moderately deep yet poorly drained organic/ash found on a pahoehoe flow. PRESERVED_SPECIMEN Adee, K.T. s.n. Hawaii BISH 6/29/1979
44 Juncus effusus L. kalaupapa; puu alii 2, near cabin PRESERVED_SPECIMEN wysong, m.l. collector number: 716 Molokai BISH 3/24/2005
45 Juncus effusus L. West Maui, Puu Kukui PRESERVED_SPECIMEN Krajina, V.J. 620418048 Maui BISH 4/18/1962
46 Juncus effusus L. North Kohala District; Hawi Quadrangle, Parker Ranch. Stock ponds in vicinity of Kehena Reservoir Emergent vegetation growing along shore & standing water. Floating submergent. PRESERVED_SPECIMEN Engilis Jr., A. 92-16 Hawaii BISH 6/8/1992
47 Juncus effusus L. Keauhou Ranch, Kau District, beside Puu oo Trail Growing in pond near water tank in Pennisetum clandestinum - Anthoxanthum odoratum - Axonopus affinis pasture. PRESERVED_SPECIMEN Cuddihy, L.W. 462 Hawaii BISH 5/20/1980
48 Juncus effusus L. west maui, puu kukui PRESERVED_SPECIMEN krajina, v.j. collector number: 620418048 Hawaii BISH 4/18/1962
49 Juncus effusus L. Mount Kaala, Waianae Mts., Oahu, Hawaii Growing on the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN Crago, L.M. Imada, C.; McGuire, C. Collector Number: 2005-238 Oahu BISH 11/22/2005
50 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN Flynn, T. 7395 Kauai BISH 5/21/2008
51 Juncus effusus L. PRESERVED_SPECIMEN G R Cooley|W E Bonsey AK 12/22/1965
52 Juncus effusus L. east of pepeopae toward bare mountain, molokai, territory of hawaii Foster Botanical Garden #FL 2781 PRESERVED_SPECIMEN o. degener 9834 CM 5/9/1928
53 Juncus effusus L. growing between the paved sidewalk and a garden wall. kekuanoni street, pauoa valley, honolulu. wet ledges PRESERVED_SPECIMEN bush, wm 1179 FH 3/4/1980
54 Juncus effusus L. island of maui, along waterline through rain forest. PRESERVED_SPECIMEN george r. cooley; w. edwin bonsey 11187 GRCH 12/22/1965
55 Juncus effusus L. molokai: along pig's trail, puu o kaeha, kawela Grassy shrubby slope PRESERVED_SPECIMEN h. st. john 12512 NY 12/23/1932
56 Juncus effusus L. east of pepeopae toward bare mountain, molokai, territory of hawaii In boggy place PRESERVED_SPECIMEN o. degener 9834 NY 5/9/1928
57 Juncus effusus L. Ahualoa, coffee farm irrigation pond. Growing on moist, sandy soil on ban, moist, sandy soil PRESERVED_SPECIMEN K. Uyehara s.n. Oahu PTBG 11/24/2005
58 Juncus effusus L. At 3115 Kaloaluiki Place, in the Manoa Valley, Honolulu. Cultivated. PRESERVED_SPECIMEN Alice Kadowaki sub George Staples 593 Oahu PTBG 4/14/1990
59 Juncus effusus L. West Maui NAR Survey, Honokowao section, along Puu Kukui trail, transect 9, near rain gauge at Nakalalu. In Metrosideros mixed montane wet forest. PRESERVED_SPECIMEN Steve Perlman 10599 Maui PTBG 4/12/1988
60 Juncus effusus L. W. Maui, Honokohau. Growing along th e Pu'u Kukui Trail in the top bog. PRESERVED_SPECIMEN Hank Oppenheimer H50047 Maui PTBG 5/26/2000
61 Juncus effusus L. Kamakou Preserve; wets fork of stream just east of Kawela Ridge, along upper reaches of gulch and ridge leading to Puu o Kaeha. Alt. 970 - 1060 m. Low, mixed wet forest. In stream bed. PRESERVED_SPECIMEN David H. Lorence 5627 Molokai PTBG 10/22/1987
62 Juncus effusus L. Kokee, Pihea Trail. Metrosideros- Dicranopteris linearis montane wet forest. PRESERVED_SPECIMEN Natalia Tangalin 671 Kauai PTBG 1/5/2006
63 Juncus effusus L. Puu Makaala NAR survey transect 6, off Dissappointment Rd. In Metrosideros-Cibotium montane wet forest. PRESERVED_SPECIMEN Steve Perlman 10475 Hawaii PTBG 2/10/1988
64 Juncus effusus L. Kokee State Park, between Pihea Trail and Pihea Peak. Metrosideros dominated wet forest. PRESERVED_SPECIMEN Tim Flynn 7395 Kauai PTBG 5/21/2008
65 Juncus effusus L. Kohala Mts., Awini Ridge, PTBG preserve. On plateau above & to the southeast of Waipahi Stream. In swampy areas between ohia "tussocks". PRESERVED_SPECIMEN Tim Flynn 1407 Hawaii PTBG 11/21/1985
66 Juncus effusus L. Beside Alakai Swamp trail, in the first bog encountered along the trail. Infestation spreading along Alakai swamp and Pihea trails from the densest infestation near Pihea peak. Growing in disturbed soil/pools of water under open open canopy in bog vegetation along the Alakai swamp trail where boardwalk is broken. PRESERVED_SPECIMEN Kelsey Brock 705 Kauai PTBG 9/1/2015
67 Juncus effusus L. east of pepeopae toward bare mountain Boggy place PRESERVED_SPECIMEN o. degener 9834 Molokai US 5/9/1928
68 Juncus effusus L. Mount Kaala, Waianae Mts. On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN L. Crago, C. Imada & C. McGuire 2005-238 Oahu US 11/22/2005
69 Juncus effusus L. kokee, pihea trail. Montane wet forest PRESERVED_SPECIMEN n. tangalin & s. p. perlman 671 Kauai US 1/5/2006
70 Juncus effusus L. puu of kaeha, kawela PRESERVED_SPECIMEN h. st. john, r. j. baker, j. w. coulter & f. r. fosberg 12512 Molokai US 12/23/1932
71 Juncus effusus L. Kokee State Park, between Pihea Trail and Pihea Peak. Wet forest PRESERVED_SPECIMEN T. W. Flynn, A. Vernon & D. Boucher 7395 Kauai US 5/21/2008
72 Juncus effusus L. hilo forest reserve, hilo watershed, along jeep trail to wailuku stream. PRESERVED_SPECIMEN d. r. herbst & s. ishikawa 5147 Hawaii US 1/14/1975
73 Juncus effusus L. kokee state park, between pihea trail and pihea peak. PRESERVED_SPECIMEN t. w. flynn, a. vernon & d. boucher 7395 Maui US 5/21/2008
74 Juncus effusus L. honokowai section, w maui nar, along puu kukui trail, transect 9, near rain gauge at nakalalu PRESERVED_SPECIMEN s. p. perlman, r. bartlett & m. bruegmann 10599 Maui US 4/12/1988
75 Juncus effusus L. mount kaala, waianae mts. On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN l. crago, c. imada & c. mcguire 2005-238 Oahu US 11/22/2005
76 Juncus effusus L. ahualoa, coffee farm irrigation pond. On moist, sandy soil on bank. PRESERVED_SPECIMEN k. uyehara s.n. Hawaii US 9/24/2005
77 Juncus effusus L. kahuku-ainapo trail, kahuku, mauna loa PRESERVED_SPECIMEN e. y. hosaka 1457 Hawaii US 7/28/1936
78 Juncus effusus L. puna district, kulani trail, ola`a forest reserve, ola`a PRESERVED_SPECIMEN h. st. john 24988 Kauai US 1/28/1953
79 Juncus effusus L. PRESERVED_SPECIMEN otto degener 9834 WIS 5/9/1928
80 Juncus effusus L. Mount Kaala, Waianae Mts., Oahu, Hawaii Growing on the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN Crago, L.M. 2005-238 Oahu BISH 11/22/2005
81 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN Flynn, T. Collector Number: 7395 Kauai BISH 5/21/2008
82 Juncus effusus L. West Maui, Puu Kukui Trail. In open bogs. PRESERVED_SPECIMEN Hobdy, R.W. 3234 Maui BISH 7/31/1991
83 Juncus effusus L. ahualoa, coffee farm irrigation pond Pond dominated by Schoenoplectus mucronatus (70% cover), with Eleocharis obtusa, Ludwigia palustris, Cuphea carthagenensis, Cyperus halpan, Juncus acuminatus. PRESERVED_SPECIMEN uyehara, k.j. collector number: s.n. Hawaii BISH 9/24/2005
84 Juncus effusus L. piihonua; hilo forest reserve, site 23 os Stunted ohia wetland dieback; assoc. spp.: Metrosideros polymorpha, Ilex anomala, Myrsine lessertiana, M. sandwicensis, Cheirodendron trigynum & Pelea clusiifolia. Soil a moderately deep yet poorly drained organic/ash found on a pahoehoe flow. PRESERVED_SPECIMEN adee, k.t. collector number: s.n. Hawaii BISH 6/29/1979
85 Juncus effusus L. Waimea District: Beside Alakai Swamp trail, in the first bog encountered along the trail. Infestation spreading along Alakai swamp and Pihea trails from the densest infestation near Pihea peak. Growing in disturbed soil/pools of water under open open canopy in bog vegetation along the Alakai swamp trail where boardwalk is broken. Metrosideros polymorpha, Drosera anglica, Xyris complanata, Dicranopteris linearis. PRESERVED_SPECIMEN Brock, K. 705 Kauai BISH 9/1/2015
86 Juncus effusus L. mount kaala, waianae mts., oahu, hawaii PRESERVED_SPECIMEN crago, l.m. imada, c.; mcguire, c. collector number: 2005-238 Hawaii BISH 11/22/2005
87 Juncus effusus L. Kalaupapa; Puu Alii 2, near cabin PRESERVED_SPECIMEN Wysong, M.L. 716 Molokai BISH 3/24/2005
88 Juncus effusus L. unknown PreservedSpecimen Rock, J.F.C. Collector Number: s.n. BISH Specimen
89 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Wet forest PRESERVED_SPECIMEN T. W. Flynn, A. Vernon & D. Boucher 7395 Kauai HAPI 5/21/2008
90 Juncus effusus L. Boundary road between Kapapala Forest Reserve and Kapapala Ranch, Kau District On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN L. Crago, C. Imada & C. McGuire 2005-238 Hawaii HAPI 11/22/2005
91 Juncus effusus L. keauhou ranch, kau district, beside puu oo trail PRESERVED_SPECIMEN cuddihy, l.w. collector number: 462 Oahu BISH 5/20/1980
92 Juncus effusus L. kokee state park, between pihea trail and pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN flynn, t. collector number: 7395 Kauai BISH 5/21/2008
93 Juncus effusus L. Piihonua; Hilo Forest Reserve, Site 23 OS Stunted ohia wetland dieback; assoc. spp.: Metrosideros polymorpha, Ilex anomala, Myrsine lessertiana, M. sandwicensis, Cheirodendron trigynum & Pelea clusiifolia. Soil a moderately deep yet poorly drained organic/ash found on a pahoehoe flow. PRESERVED_SPECIMEN Adee, K.T. s.n. Hawaii BISH 6/29/1979
94 Juncus effusus L. kalaupapa; puu alii 2, near cabin PRESERVED_SPECIMEN wysong, m.l. collector number: 716 Molokai BISH 3/24/2005
95 Juncus effusus L. West Maui, Puu Kukui PRESERVED_SPECIMEN Krajina, V.J. 620418048 Maui BISH 4/18/1962
96 Juncus effusus L. North Kohala District; Hawi Quadrangle, Parker Ranch. Stock ponds in vicinity of Kehena Reservoir Emergent vegetation growing along shore & standing water. Floating submergent. PRESERVED_SPECIMEN Engilis Jr., A. 92-16 Hawaii BISH 6/8/1992
97 Juncus effusus L. Keauhou Ranch, Kau District, beside Puu oo Trail Growing in pond near water tank in Pennisetum clandestinum - Anthoxanthum odoratum - Axonopus affinis pasture. PRESERVED_SPECIMEN Cuddihy, L.W. 462 Hawaii BISH 5/20/1980
98 Juncus effusus L. west maui, puu kukui PRESERVED_SPECIMEN krajina, v.j. collector number: 620418048 Hawaii BISH 4/18/1962
99 Juncus effusus L. Mount Kaala, Waianae Mts., Oahu, Hawaii Growing on the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN Crago, L.M. Imada, C.; McGuire, C. Collector Number: 2005-238 Oahu BISH 11/22/2005
100 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN Flynn, T. 7395 Kauai BISH 5/21/2008
101 Juncus effusus L. PRESERVED_SPECIMEN G R Cooley|W E Bonsey AK 12/22/1965
102 Juncus effusus L. east of pepeopae toward bare mountain, molokai, territory of hawaii Foster Botanical Garden #FL 2781 PRESERVED_SPECIMEN o. degener 9834 CM 5/9/1928
103 Juncus effusus L. growing between the paved sidewalk and a garden wall. kekuanoni street, pauoa valley, honolulu. wet ledges PRESERVED_SPECIMEN bush, wm 1179 FH 3/4/1980
104 Juncus effusus L. island of maui, along waterline through rain forest. PRESERVED_SPECIMEN george r. cooley; w. edwin bonsey 11187 GRCH 12/22/1965
105 Juncus effusus L. molokai: along pig's trail, puu o kaeha, kawela Grassy shrubby slope PRESERVED_SPECIMEN h. st. john 12512 NY 12/23/1932
106 Juncus effusus L. east of pepeopae toward bare mountain, molokai, territory of hawaii In boggy place PRESERVED_SPECIMEN o. degener 9834 NY 5/9/1928
107 Juncus effusus L. Ahualoa, coffee farm irrigation pond. Growing on moist, sandy soil on ban, moist, sandy soil PRESERVED_SPECIMEN K. Uyehara s.n. Oahu PTBG 11/24/2005
108 Juncus effusus L. At 3115 Kaloaluiki Place, in the Manoa Valley, Honolulu. Cultivated. PRESERVED_SPECIMEN Alice Kadowaki sub George Staples 593 Oahu PTBG 4/14/1990
109 Juncus effusus L. West Maui NAR Survey, Honokowao section, along Puu Kukui trail, transect 9, near rain gauge at Nakalalu. In Metrosideros mixed montane wet forest. PRESERVED_SPECIMEN Steve Perlman 10599 Maui PTBG 4/12/1988
110 Juncus effusus L. W. Maui, Honokohau. Growing along th e Pu'u Kukui Trail in the top bog. PRESERVED_SPECIMEN Hank Oppenheimer H50047 Maui PTBG 5/26/2000
111 Juncus effusus L. Kamakou Preserve; wets fork of stream just east of Kawela Ridge, along upper reaches of gulch and ridge leading to Puu o Kaeha. Alt. 970 - 1060 m. Low, mixed wet forest. In stream bed. PRESERVED_SPECIMEN David H. Lorence 5627 Molokai PTBG 10/22/1987
112 Juncus effusus L. Kokee, Pihea Trail. Metrosideros- Dicranopteris linearis montane wet forest. PRESERVED_SPECIMEN Natalia Tangalin 671 Kauai PTBG 1/5/2006
113 Juncus effusus L. Puu Makaala NAR survey transect 6, off Dissappointment Rd. In Metrosideros-Cibotium montane wet forest. PRESERVED_SPECIMEN Steve Perlman 10475 Hawaii PTBG 2/10/1988
114 Juncus effusus L. Kokee State Park, between Pihea Trail and Pihea Peak. Metrosideros dominated wet forest. PRESERVED_SPECIMEN Tim Flynn 7395 Kauai PTBG 5/21/2008
115 Juncus effusus L. Kohala Mts., Awini Ridge, PTBG preserve. On plateau above & to the southeast of Waipahi Stream. In swampy areas between ohia "tussocks". PRESERVED_SPECIMEN Tim Flynn 1407 Hawaii PTBG 11/21/1985
116 Juncus effusus L. Beside Alakai Swamp trail, in the first bog encountered along the trail. Infestation spreading along Alakai swamp and Pihea trails from the densest infestation near Pihea peak. Growing in disturbed soil/pools of water under open open canopy in bog vegetation along the Alakai swamp trail where boardwalk is broken. PRESERVED_SPECIMEN Kelsey Brock 705 Kauai PTBG 9/1/2015
117 Juncus effusus L. east of pepeopae toward bare mountain Boggy place PRESERVED_SPECIMEN o. degener 9834 Molokai US 5/9/1928
118 Juncus effusus L. Mount Kaala, Waianae Mts. On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN L. Crago, C. Imada & C. McGuire 2005-238 Oahu US 11/22/2005
119 Juncus effusus L. kokee, pihea trail. Montane wet forest PRESERVED_SPECIMEN n. tangalin & s. p. perlman 671 Kauai US 1/5/2006
120 Juncus effusus L. puu of kaeha, kawela PRESERVED_SPECIMEN h. st. john, r. j. baker, j. w. coulter & f. r. fosberg 12512 Molokai US 12/23/1932
121 Juncus effusus L. Kokee State Park, between Pihea Trail and Pihea Peak. Wet forest PRESERVED_SPECIMEN T. W. Flynn, A. Vernon & D. Boucher 7395 Kauai US 5/21/2008
122 Juncus effusus L. hilo forest reserve, hilo watershed, along jeep trail to wailuku stream. PRESERVED_SPECIMEN d. r. herbst & s. ishikawa 5147 Hawaii US 1/14/1975
123 Juncus effusus L. kokee state park, between pihea trail and pihea peak. PRESERVED_SPECIMEN t. w. flynn, a. vernon & d. boucher 7395 Maui US 5/21/2008
124 Juncus effusus L. honokowai section, w maui nar, along puu kukui trail, transect 9, near rain gauge at nakalalu PRESERVED_SPECIMEN s. p. perlman, r. bartlett & m. bruegmann 10599 Maui US 4/12/1988
125 Juncus effusus L. mount kaala, waianae mts. On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN l. crago, c. imada & c. mcguire 2005-238 Oahu US 11/22/2005
126 Juncus effusus L. ahualoa, coffee farm irrigation pond. On moist, sandy soil on bank. PRESERVED_SPECIMEN k. uyehara s.n. Hawaii US 9/24/2005
127 Juncus effusus L. kahuku-ainapo trail, kahuku, mauna loa PRESERVED_SPECIMEN e. y. hosaka 1457 Hawaii US 7/28/1936
128 Juncus effusus L. puna district, kulani trail, ola`a forest reserve, ola`a PRESERVED_SPECIMEN h. st. john 24988 Kauai US 1/28/1953
129 Juncus effusus L. PRESERVED_SPECIMEN otto degener 9834 WIS 5/9/1928
130 Juncus effusus L. Mount Kaala, Waianae Mts., Oahu, Hawaii Growing on the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN Crago, L.M. 2005-238 Oahu BISH 11/22/2005
131 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN Flynn, T. Collector Number: 7395 Kauai BISH 5/21/2008
132 Juncus effusus L. West Maui, Puu Kukui Trail. In open bogs. PRESERVED_SPECIMEN Hobdy, R.W. 3234 Maui BISH 7/31/1991
133 Juncus effusus L. ahualoa, coffee farm irrigation pond Pond dominated by Schoenoplectus mucronatus (70% cover), with Eleocharis obtusa, Ludwigia palustris, Cuphea carthagenensis, Cyperus halpan, Juncus acuminatus. PRESERVED_SPECIMEN uyehara, k.j. collector number: s.n. Hawaii BISH 9/24/2005
134 Juncus effusus L. piihonua; hilo forest reserve, site 23 os Stunted ohia wetland dieback; assoc. spp.: Metrosideros polymorpha, Ilex anomala, Myrsine lessertiana, M. sandwicensis, Cheirodendron trigynum & Pelea clusiifolia. Soil a moderately deep yet poorly drained organic/ash found on a pahoehoe flow. PRESERVED_SPECIMEN adee, k.t. collector number: s.n. Hawaii BISH 6/29/1979
135 Juncus effusus L. Waimea District: Beside Alakai Swamp trail, in the first bog encountered along the trail. Infestation spreading along Alakai swamp and Pihea trails from the densest infestation near Pihea peak. Growing in disturbed soil/pools of water under open open canopy in bog vegetation along the Alakai swamp trail where boardwalk is broken. Metrosideros polymorpha, Drosera anglica, Xyris complanata, Dicranopteris linearis. PRESERVED_SPECIMEN Brock, K. 705 Kauai BISH 9/1/2015
136 Juncus effusus L. mount kaala, waianae mts., oahu, hawaii PRESERVED_SPECIMEN crago, l.m. imada, c.; mcguire, c. collector number: 2005-238 Hawaii BISH 11/22/2005
137 Juncus effusus L. Kalaupapa; Puu Alii 2, near cabin PRESERVED_SPECIMEN Wysong, M.L. 716 Molokai BISH 3/24/2005
138 Juncus effusus L. unknown PreservedSpecimen Rock, J.F.C. Collector Number: s.n. BISH Specimen
139 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Wet forest PRESERVED_SPECIMEN T. W. Flynn, A. Vernon & D. Boucher 7395 Kauai HAPI 5/21/2008
140 Juncus effusus L. Boundary road between Kapapala Forest Reserve and Kapapala Ranch, Kau District On the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN L. Crago, C. Imada & C. McGuire 2005-238 Hawaii HAPI 11/22/2005
141 Juncus effusus L. keauhou ranch, kau district, beside puu oo trail PRESERVED_SPECIMEN cuddihy, l.w. collector number: 462 Oahu BISH 5/20/1980
142 Juncus effusus L. kokee state park, between pihea trail and pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN flynn, t. collector number: 7395 Kauai BISH 5/21/2008
143 Juncus effusus L. Piihonua; Hilo Forest Reserve, Site 23 OS Stunted ohia wetland dieback; assoc. spp.: Metrosideros polymorpha, Ilex anomala, Myrsine lessertiana, M. sandwicensis, Cheirodendron trigynum & Pelea clusiifolia. Soil a moderately deep yet poorly drained organic/ash found on a pahoehoe flow. PRESERVED_SPECIMEN Adee, K.T. s.n. Hawaii BISH 6/29/1979
144 Juncus effusus L. kalaupapa; puu alii 2, near cabin PRESERVED_SPECIMEN wysong, m.l. collector number: 716 Molokai BISH 3/24/2005
145 Juncus effusus L. West Maui, Puu Kukui PRESERVED_SPECIMEN Krajina, V.J. 620418048 Maui BISH 4/18/1962
146 Juncus effusus L. North Kohala District; Hawi Quadrangle, Parker Ranch. Stock ponds in vicinity of Kehena Reservoir Emergent vegetation growing along shore & standing water. Floating submergent. PRESERVED_SPECIMEN Engilis Jr., A. 92-16 Hawaii BISH 6/8/1992
147 Juncus effusus L. Keauhou Ranch, Kau District, beside Puu oo Trail Growing in pond near water tank in Pennisetum clandestinum - Anthoxanthum odoratum - Axonopus affinis pasture. PRESERVED_SPECIMEN Cuddihy, L.W. 462 Hawaii BISH 5/20/1980
148 Juncus effusus L. west maui, puu kukui PRESERVED_SPECIMEN krajina, v.j. collector number: 620418048 Hawaii BISH 4/18/1962
149 Juncus effusus L. Mount Kaala, Waianae Mts., Oahu, Hawaii Growing on the edge of a drainage depression, audible flowing water beneath. PRESERVED_SPECIMEN Crago, L.M. Imada, C.; McGuire, C. Collector Number: 2005-238 Oahu BISH 11/22/2005
150 Juncus effusus L. Kokee State Park, between Pihea trail and Pihea peak Metrosideros dominated wet forest with Cheirodendron, Vaccinium, Sadleria, and Clermontia. PRESERVED_SPECIMEN Flynn, T. 7395 Kauai BISH 5/21/2008
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