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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 Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Juncus effusus 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
2 Juncus effusus 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
3 Juncus effusus 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
4 Juncus effusus kalaupapa; puu alii 2, near cabin PRESERVED_SPECIMEN wysong, m.l. collector number: 716 Molokai BISH 3/24/2005
5 Juncus effusus PRESERVED_SPECIMEN G R Cooley|W E Bonsey AK 12/22/1965
6 Juncus effusus east of pepeopae toward bare mountain, molokai, territory of hawaii Foster Botanical Garden #FL 2781 PRESERVED_SPECIMEN o. degener 9834 CM 5/9/1928
7 Juncus effusus 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
8 Juncus effusus island of maui, along waterline through rain forest. PRESERVED_SPECIMEN george r. cooley; w. edwin bonsey 11187 GRCH 12/22/1965
9 Juncus effusus molokai: along pig's trail, puu o kaeha, kawela Grassy shrubby slope PRESERVED_SPECIMEN h. st. john 12512 NY 12/23/1932
10 Juncus effusus east of pepeopae toward bare mountain, molokai, territory of hawaii In boggy place PRESERVED_SPECIMEN o. degener 9834 NY 5/9/1928
11 Juncus effusus west maui, puu kukui PRESERVED_SPECIMEN krajina, v.j. collector number: 620418048 Hawaii BISH 4/18/1962
12 Juncus effusus 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
13 Juncus effusus 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
14 Juncus effusus 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
15 Juncus effusus 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
16 Juncus effusus West Maui, Puu Kukui PRESERVED_SPECIMEN Krajina, V.J. 620418048 Maui BISH 4/18/1962
17 Juncus effusus At 3115 Kaloaluiki Place, in the Manoa Valley, Honolulu. Cultivated. PRESERVED_SPECIMEN Alice Kadowaki sub George Staples 593 Oahu PTBG 4/14/1990
18 Juncus effusus 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
19 Juncus effusus 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
20 Juncus effusus Kokee, Pihea Trail. Metrosideros- Dicranopteris linearis montane wet forest. PRESERVED_SPECIMEN Natalia Tangalin 671 Kauai PTBG 1/5/2006
21 Juncus effusus 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
22 Juncus effusus Kokee State Park, between Pihea Trail and Pihea Peak. Metrosideros dominated wet forest. PRESERVED_SPECIMEN Tim Flynn 7395 Kauai PTBG 5/21/2008
23 Juncus effusus 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
24 Juncus effusus 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
25 Juncus effusus 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
26 Juncus effusus kokee, pihea trail. Montane wet forest PRESERVED_SPECIMEN n. tangalin & s. p. perlman 671 Kauai US 1/5/2006
27 Juncus effusus 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
28 Juncus effusus hilo forest reserve, hilo watershed, along jeep trail to wailuku stream. PRESERVED_SPECIMEN d. r. herbst & s. ishikawa 5147 Hawaii US 1/14/1975
29 Juncus effusus kokee state park, between pihea trail and pihea peak. PRESERVED_SPECIMEN t. w. flynn, a. vernon & d. boucher 7395 Maui US 5/21/2008
30 Juncus effusus 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
31 Juncus effusus 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
32 Juncus effusus east of pepeopae toward bare mountain Boggy place PRESERVED_SPECIMEN o. degener 9834 Molokai US 5/9/1928
33 Juncus effusus puu of kaeha, kawela PRESERVED_SPECIMEN h. st. john, r. j. baker, j. w. coulter & f. r. fosberg 12512 Molokai US 12/23/1932
34 Juncus effusus 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
35 Juncus effusus 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
36 Juncus effusus ahualoa, coffee farm irrigation pond. On moist, sandy soil on bank. PRESERVED_SPECIMEN k. uyehara s.n. Hawaii US 9/24/2005
37 Juncus effusus kahuku-ainapo trail, kahuku, mauna loa PRESERVED_SPECIMEN e. y. hosaka 1457 Hawaii US 7/28/1936
38 Juncus effusus puna district, kulani trail, ola`a forest reserve, ola`a PRESERVED_SPECIMEN h. st. john 24988 Kauai US 1/28/1953
39 Juncus effusus PRESERVED_SPECIMEN otto degener 9834 WIS 5/9/1928
40 Juncus effusus 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
41 Juncus effusus West Maui, Puu Kukui Trail. In open bogs. PRESERVED_SPECIMEN Hobdy, R.W. 3234 Maui BISH 7/31/1991
42 Juncus effusus unknown PreservedSpecimen Rock, J.F.C. Collector Number: s.n. BISH Specimen
43 Juncus effusus 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
44 Juncus effusus 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
45 Juncus effusus 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
46 Juncus effusus 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
47 Juncus effusus mount kaala, waianae mts., oahu, hawaii PRESERVED_SPECIMEN crago, l.m. imada, c.; mcguire, c. collector number: 2005-238 Hawaii BISH 11/22/2005
48 Juncus effusus 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
49 Juncus effusus keauhou ranch, kau district, beside puu oo trail PRESERVED_SPECIMEN cuddihy, l.w. collector number: 462 Oahu BISH 5/20/1980
50 Juncus effusus Kalaupapa; Puu Alii 2, near cabin PRESERVED_SPECIMEN Wysong, M.L. 716 Molokai BISH 3/24/2005
51 Juncus effusus 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
52 Juncus effusus 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
53 Juncus effusus 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
54 Juncus effusus kalaupapa; puu alii 2, near cabin PRESERVED_SPECIMEN wysong, m.l. collector number: 716 Molokai BISH 3/24/2005
55 Juncus effusus PRESERVED_SPECIMEN G R Cooley|W E Bonsey AK 12/22/1965
56 Juncus effusus east of pepeopae toward bare mountain, molokai, territory of hawaii Foster Botanical Garden #FL 2781 PRESERVED_SPECIMEN o. degener 9834 CM 5/9/1928
57 Juncus effusus 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
58 Juncus effusus island of maui, along waterline through rain forest. PRESERVED_SPECIMEN george r. cooley; w. edwin bonsey 11187 GRCH 12/22/1965
59 Juncus effusus molokai: along pig's trail, puu o kaeha, kawela Grassy shrubby slope PRESERVED_SPECIMEN h. st. john 12512 NY 12/23/1932
60 Juncus effusus east of pepeopae toward bare mountain, molokai, territory of hawaii In boggy place PRESERVED_SPECIMEN o. degener 9834 NY 5/9/1928
61 Juncus effusus west maui, puu kukui PRESERVED_SPECIMEN krajina, v.j. collector number: 620418048 Hawaii BISH 4/18/1962
62 Juncus effusus 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
63 Juncus effusus 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
64 Juncus effusus 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
65 Juncus effusus 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
66 Juncus effusus West Maui, Puu Kukui PRESERVED_SPECIMEN Krajina, V.J. 620418048 Maui BISH 4/18/1962
67 Juncus effusus At 3115 Kaloaluiki Place, in the Manoa Valley, Honolulu. Cultivated. PRESERVED_SPECIMEN Alice Kadowaki sub George Staples 593 Oahu PTBG 4/14/1990
68 Juncus effusus 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
69 Juncus effusus 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
70 Juncus effusus Kokee, Pihea Trail. Metrosideros- Dicranopteris linearis montane wet forest. PRESERVED_SPECIMEN Natalia Tangalin 671 Kauai PTBG 1/5/2006
71 Juncus effusus 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
72 Juncus effusus Kokee State Park, between Pihea Trail and Pihea Peak. Metrosideros dominated wet forest. PRESERVED_SPECIMEN Tim Flynn 7395 Kauai PTBG 5/21/2008
73 Juncus effusus 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
74 Juncus effusus 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
75 Juncus effusus 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
76 Juncus effusus kokee, pihea trail. Montane wet forest PRESERVED_SPECIMEN n. tangalin & s. p. perlman 671 Kauai US 1/5/2006
77 Juncus effusus 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
78 Juncus effusus hilo forest reserve, hilo watershed, along jeep trail to wailuku stream. PRESERVED_SPECIMEN d. r. herbst & s. ishikawa 5147 Hawaii US 1/14/1975
79 Juncus effusus kokee state park, between pihea trail and pihea peak. PRESERVED_SPECIMEN t. w. flynn, a. vernon & d. boucher 7395 Maui US 5/21/2008
80 Juncus effusus 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
81 Juncus effusus 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
82 Juncus effusus east of pepeopae toward bare mountain Boggy place PRESERVED_SPECIMEN o. degener 9834 Molokai US 5/9/1928
83 Juncus effusus puu of kaeha, kawela PRESERVED_SPECIMEN h. st. john, r. j. baker, j. w. coulter & f. r. fosberg 12512 Molokai US 12/23/1932
84 Juncus effusus 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
85 Juncus effusus 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
86 Juncus effusus ahualoa, coffee farm irrigation pond. On moist, sandy soil on bank. PRESERVED_SPECIMEN k. uyehara s.n. Hawaii US 9/24/2005
87 Juncus effusus kahuku-ainapo trail, kahuku, mauna loa PRESERVED_SPECIMEN e. y. hosaka 1457 Hawaii US 7/28/1936
88 Juncus effusus puna district, kulani trail, ola`a forest reserve, ola`a PRESERVED_SPECIMEN h. st. john 24988 Kauai US 1/28/1953
89 Juncus effusus PRESERVED_SPECIMEN otto degener 9834 WIS 5/9/1928
90 Juncus effusus 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
91 Juncus effusus West Maui, Puu Kukui Trail. In open bogs. PRESERVED_SPECIMEN Hobdy, R.W. 3234 Maui BISH 7/31/1991
92 Juncus effusus unknown PreservedSpecimen Rock, J.F.C. Collector Number: s.n. BISH Specimen
93 Juncus effusus 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
94 Juncus effusus 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
95 Juncus effusus 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
96 Juncus effusus 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
97 Juncus effusus mount kaala, waianae mts., oahu, hawaii PRESERVED_SPECIMEN crago, l.m. imada, c.; mcguire, c. collector number: 2005-238 Hawaii BISH 11/22/2005
98 Juncus effusus 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
99 Juncus effusus keauhou ranch, kau district, beside puu oo trail PRESERVED_SPECIMEN cuddihy, l.w. collector number: 462 Oahu BISH 5/20/1980
100 Juncus effusus Kalaupapa; Puu Alii 2, near cabin PRESERVED_SPECIMEN Wysong, M.L. 716 Molokai BISH 3/24/2005
101 Juncus effusus 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
102 Juncus effusus 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
103 Juncus effusus 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
104 Juncus effusus kalaupapa; puu alii 2, near cabin PRESERVED_SPECIMEN wysong, m.l. collector number: 716 Molokai BISH 3/24/2005
105 Juncus effusus PRESERVED_SPECIMEN G R Cooley|W E Bonsey AK 12/22/1965
106 Juncus effusus east of pepeopae toward bare mountain, molokai, territory of hawaii Foster Botanical Garden #FL 2781 PRESERVED_SPECIMEN o. degener 9834 CM 5/9/1928
107 Juncus effusus 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
108 Juncus effusus island of maui, along waterline through rain forest. PRESERVED_SPECIMEN george r. cooley; w. edwin bonsey 11187 GRCH 12/22/1965
109 Juncus effusus molokai: along pig's trail, puu o kaeha, kawela Grassy shrubby slope PRESERVED_SPECIMEN h. st. john 12512 NY 12/23/1932
110 Juncus effusus east of pepeopae toward bare mountain, molokai, territory of hawaii In boggy place PRESERVED_SPECIMEN o. degener 9834 NY 5/9/1928
111 Juncus effusus west maui, puu kukui PRESERVED_SPECIMEN krajina, v.j. collector number: 620418048 Hawaii BISH 4/18/1962
112 Juncus effusus 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
113 Juncus effusus 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
114 Juncus effusus 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
115 Juncus effusus 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
116 Juncus effusus West Maui, Puu Kukui PRESERVED_SPECIMEN Krajina, V.J. 620418048 Maui BISH 4/18/1962
117 Juncus effusus At 3115 Kaloaluiki Place, in the Manoa Valley, Honolulu. Cultivated. PRESERVED_SPECIMEN Alice Kadowaki sub George Staples 593 Oahu PTBG 4/14/1990
118 Juncus effusus 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
119 Juncus effusus 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
120 Juncus effusus Kokee, Pihea Trail. Metrosideros- Dicranopteris linearis montane wet forest. PRESERVED_SPECIMEN Natalia Tangalin 671 Kauai PTBG 1/5/2006
121 Juncus effusus 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
122 Juncus effusus Kokee State Park, between Pihea Trail and Pihea Peak. Metrosideros dominated wet forest. PRESERVED_SPECIMEN Tim Flynn 7395 Kauai PTBG 5/21/2008
123 Juncus effusus 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
124 Juncus effusus 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
125 Juncus effusus 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
126 Juncus effusus kokee, pihea trail. Montane wet forest PRESERVED_SPECIMEN n. tangalin & s. p. perlman 671 Kauai US 1/5/2006
127 Juncus effusus 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
128 Juncus effusus hilo forest reserve, hilo watershed, along jeep trail to wailuku stream. PRESERVED_SPECIMEN d. r. herbst & s. ishikawa 5147 Hawaii US 1/14/1975
129 Juncus effusus kokee state park, between pihea trail and pihea peak. PRESERVED_SPECIMEN t. w. flynn, a. vernon & d. boucher 7395 Maui US 5/21/2008
130 Juncus effusus 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
131 Juncus effusus 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
132 Juncus effusus east of pepeopae toward bare mountain Boggy place PRESERVED_SPECIMEN o. degener 9834 Molokai US 5/9/1928
133 Juncus effusus puu of kaeha, kawela PRESERVED_SPECIMEN h. st. john, r. j. baker, j. w. coulter & f. r. fosberg 12512 Molokai US 12/23/1932
134 Juncus effusus 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
135 Juncus effusus 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
136 Juncus effusus ahualoa, coffee farm irrigation pond. On moist, sandy soil on bank. PRESERVED_SPECIMEN k. uyehara s.n. Hawaii US 9/24/2005
137 Juncus effusus kahuku-ainapo trail, kahuku, mauna loa PRESERVED_SPECIMEN e. y. hosaka 1457 Hawaii US 7/28/1936
138 Juncus effusus puna district, kulani trail, ola`a forest reserve, ola`a PRESERVED_SPECIMEN h. st. john 24988 Kauai US 1/28/1953
139 Juncus effusus PRESERVED_SPECIMEN otto degener 9834 WIS 5/9/1928
140 Juncus effusus 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
141 Juncus effusus West Maui, Puu Kukui Trail. In open bogs. PRESERVED_SPECIMEN Hobdy, R.W. 3234 Maui BISH 7/31/1991
142 Juncus effusus unknown PreservedSpecimen Rock, J.F.C. Collector Number: s.n. BISH Specimen
143 Juncus effusus 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
144 Juncus effusus 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
145 Juncus effusus 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
146 Juncus effusus 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
147 Juncus effusus mount kaala, waianae mts., oahu, hawaii PRESERVED_SPECIMEN crago, l.m. imada, c.; mcguire, c. collector number: 2005-238 Hawaii BISH 11/22/2005
148 Juncus effusus 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
149 Juncus effusus keauhou ranch, kau district, beside puu oo trail PRESERVED_SPECIMEN cuddihy, l.w. collector number: 462 Oahu BISH 5/20/1980
150 Juncus effusus Kalaupapa; Puu Alii 2, near cabin PRESERVED_SPECIMEN Wysong, M.L. 716 Molokai BISH 3/24/2005
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