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Juncus polyanthemus

Buchenau (1894)

This name is accepted

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

bog rush, manyflower rush, rush

Description

Key Characters:

Growth Form: Perennial herbs, rhizomes short, horizontal.

Stems: Stems dark brown at base, crowded on rhizome, 4–13 dm long, 3–4 mm in diameter, pith interrupted.

Roots:

Leaves: Leaves simple. Leaves basal, bladeless. Margins entire. Sheaths dark brown at base becoming pale brown toward apex. Stipules absent.

Flowers: Flowers solitary in many-branched, spreading, cymose inflorescences up to 12 cm long, dichotomously branched, appearing lateral, lowest bract terete (cylindrical), appearing to be a continuation of the stem, 10–40 cm long, usually much longer than inflorescence. Flowers bisexual (perfect). Perianth parts pale, shorter than capsule, not spreading in fruit, inner ones wider than outer ones, with wide hyaline margins, outer ones longer than inner ones. Stamens 3. Pollen grains remaining in tetrads, surrounded by a common exine. Ovary superior, carpels 1.

Fruit: Capsules pale to medium brown; shiny; thin; globose; ca. 2 mm long. Seeds rusty brown; asymmetrical; apiculate; ca. 0.45 mm long.

Ploidy:

Habitat: Naturalized in muddy; disturbed areas; and it has been collected from pond cultivation on O'ahu.

Elevation Range: above 700 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Only found in cultivation
O'ahu Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean
Birds
Other Animals

Vegetative Reproduction

Pollinators

Bibliography

Name Published In: Bot. Jahrb. Syst. 20: 261 (1894)

Other References

Wagner et al. 1990:1454 (O, M)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Juncus polyanthemus Buchenau South Kohala Distr., northwest slope of Mauan Kea, northwest Waimea Weed in gutter on roof of building, 1-story high strip mall, in full sun, in saturated peat. PRESERVED_SPECIMEN Zika, P. Collector Number: 13703 Hawaii BISH 12/29/1988
2 Juncus polyanthemus Buchenau Kulani Trail, Olaa Forest Reserve, Olaa, Puna District On moist trail. in dense Cibotium and Metrosideros forest. PRESERVED_SPECIMEN St. John, H. 24988 Hawaii BISH 1/28/1953
3 Juncus polyanthemus Buchenau South Kohala Distr., northwest slope of Mauan Kea, northwest Waimea Weed in gutter on roof of building, 1-story high strip mall, in full sun, in saturated peat. PRESERVED_SPECIMEN Zika, P. 13703 Hawaii BISH 12/29/1988
4 Juncus polyanthemus Buchenau east maui, waikamoi rd PRESERVED_SPECIMEN hobdy, r.w. collector number: 2600 Maui BISH 7/13/1986
5 Juncus polyanthemus Buchenau south kohala distr., northwest slope of mauan kea, northwest waimea Panicum beecheyi, Eragrostis variabilis, Dodonaea viscosa, Heteropogon contortus, Sida fallax, Kalanchoe pinnata, Cenchrus ciliaris, Leucaena leucocephala, Chamaesyce kuwaleana, Artemisia, Carex meyenii, Acacia confusa, Lantana camara, Opuntia, Grevillea robusta, Bidens torta, Doryopteris, Ageratina riparia PRESERVED_SPECIMEN zika, p. collector number: 13703 Oahu BISH 12/29/1988
6 Juncus polyanthemus Buchenau E. Maui, Makawao, F. R. Kahakapao. On unimproved roads & trails in mesic to wet forest. PRESERVED_SPECIMEN Hank Oppenheimer H100024 Maui PTBG 10/15/2000
7 Juncus polyanthemus Buchenau lihue district, kauai nursery and landscaping in puhi. Kipuka Kulalio, mature Acacia, Metrosideros, dodonea forest. PRESERVED_SPECIMEN k. brock 826 CSCN 5/18/2016
8 Juncus polyanthemus Buchenau about 2.5 miles east-northeast of waimea Open, wet ground PRESERVED_SPECIMEN p. rubtzov 3708 NY 6/18/1958
9 Juncus polyanthemus Buchenau Kauai Nursery and Landscaping in Puhi. Cultivated plant in water feature. PRESERVED_SPECIMEN Kelsey Brock 826 Kauai PTBG 5/18/2016
10 Juncus polyanthemus Buchenau 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. Reid, F.A. Collector Number: 92-16 Hawaii BISH 6/8/1992
11 Juncus polyanthemus Buchenau 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. s.n. Hawaii BISH 9/24/2005
12 Juncus polyanthemus Buchenau Waiohiwi Gulch, Makawao Forest Reserve Growing in muddy seeps. PRESERVED_SPECIMEN Hobdy, R.W. 984 Maui BISH 1/28/1981
13 Juncus polyanthemus Buchenau On Heeds Trail of the "Drosophilologists", below water flume (Kula Pipeline) W of Waikamoi gulch on lower N slope of Haleakala Massif, 2.5 mi due ENE of Olinda More mesic open and sunny disturbed roadside banks and clearings w/Scaevola, Uncinia, Clermontia arborescens, Styphelia tameiameiae. PRESERVED_SPECIMEN Bonsey, E. H-493 Maui BISH 8/5/1967
14 Juncus polyanthemus Buchenau Lihue District, Kauai Nursery and Landscaping in Puhi. PRESERVED_SPECIMEN Brock, K. 826 Kauai US 5/18/2016
15 Juncus polyanthemus Buchenau Dripping-wet, locally swampy (ra ca. 1OO"/yr) moss- and fern-covered cloud forest of gnarled 3-5 m Metrosideros collina, Cheirodendron platyphylla, & Broussaisia arguts, Cibotium spp., Coprosma, Styphelia. PRESERVED_SPECIMEN edwin bonsey; hugh h. iltis; michael iltis h-493 WIS 8/5/1967
16 Juncus polyanthemus Buchenau East Maui, Waikamoi Rd PRESERVED_SPECIMEN Hobdy, R.W. 2600 Maui BISH 7/13/1986
17 Juncus polyanthemus Buchenau Hanalei; Namahan, Kilauea; 2701 Kauapea Rd. PRESERVED_SPECIMEN Flynn, T. 6914 Kauai BISH 11/30/2001
18 Juncus polyanthemus Buchenau Emerson Road, Haleiwa In pond with water lilies (Nymphaea). PRESERVED_SPECIMEN Clay, H.F. s.n. Oahu BISH 7/19/1972
19 Juncus polyanthemus Buchenau emerson road, haleiwa PRESERVED_SPECIMEN clay, h.f. collector number: s.n. Oahu BISH 7/19/1972
20 Juncus polyanthemus Buchenau 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. reid, f.a. collector number: 92-16 Hawaii BISH 6/8/1992
21 Juncus polyanthemus Buchenau on heeds trail of the "drosophilologists", below water flume (kula pipeline) w of waikamoi gulch on lower n slope of haleakala massif, 2.5 mi due ene of olinda More mesic open and sunny disturbed roadside banks and clearings w/Scaevola, Uncinia, Clermontia arborescens, Styphelia tameiameiae. PRESERVED_SPECIMEN bonsey, e. iltis, h.h.; iltis, m. collector number: h-493 Maui BISH 8/5/1967
22 Juncus polyanthemus Buchenau waiohiwi gulch, makawao forest reserve PRESERVED_SPECIMEN hobdy, r.w. collector number: 984 Oahu BISH 1/28/1981
23 Juncus polyanthemus Buchenau kulani trail, olaa forest reserve, olaa, puna district On moist trail. in dense Cibotium and Metrosideros forest. PRESERVED_SPECIMEN st.john, h. collector number: 24988 Hawaii BISH 1/28/1953
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