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Cyperus alternifolius subsp. flabelliformis

Kük. (1936)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Cyperaceae Genus: Cyperus

‘ahu‘awa haole [ahuawa haole], umbrella sedge

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Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kuaihelani (Midway Atoll) Naturalized
Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean

Vegetative Reproduction

Pollinators

Bibliography

Name Published In: H.G.A.Engler (ed.), Pflanzenr., IV, 20(101): 193 (1936)

Other References

Wagner et al. 1990:1395 (Mi, K, O, M [as C. alternifolius subsp. flabelliformis]); Tucker 1994:20/Strong & Wagner 1997:41 (Syn. C. a. subsp. flabelliformis = C. involucratus); Imada et al. 2000:11 (H); Staples & Herbst 2005:656 (KEY, DESCR); Oppenheimer 2007:23 (Mo); Imada et al. 2008:12 (L); Verloove 2014:191 (Syn. C. involucratus = C. a. subsp. flabelliformis)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Cyperus alternifolius subsp. flabelliformis Honolulu By ditch. Preserved_Specimen Krauss, N.L.H. Oahu BISH 1943-01-18
2 Cyperus alternifolius subsp. flabelliformis Honolulu District, UH campus, behind EW Center Growing along Manoa Stream. Preserved_Specimen Herbst, D.R. 316 Oahu BISH 1967-02-18
3 Cyperus alternifolius subsp. flabelliformis Honolulu: Manoa Valley; University of Hawaii Manoa Campus, Sherman Laboratory Growing directly on a cement surface where water drips constantly. Receiving full sun. Preserved_Specimen Plant growing in a dense clump. Stems up to 1.5 m long. Lau, J. 1687 Oahu BISH 1985-11-27
4 Cyperus alternifolius subsp. flabelliformis W Maui, Lahaina District, Kahana Growing in Ohia/Uluhe Wet Forest with Rubus argutus and R. discolor. Preserved_Specimen Clumping plants with terete culms with one ridge, and bladeless; basal sheath brownish purple; inflorescence becoming lax. Plants growing to almost 2m tall. Oppenheimer, H.L. 60401 Maui BISH 2004-06-09
5 Cyperus alternifolius subsp. flabelliformis Kawainui Marsh, Northend of dike road on Marsh side Scattered on muddy banks of marsh intermixed with other vegetation in 2-3 inches of water to upper bank areas of wet soil. Also visable across canal on floating mat vegetation of Kawai Nui Marsh. Preserved_Specimen Umbrella-like sedge about 1 meter tall, clumping. Crago, L.M. 2005012 Oahu BISH 2005-01-20
6 Cyperus alternifolius subsp. flabelliformis Nuuanu, Honolulu Wet ground. Preserved_Specimen Inafuku, R. Oahu BISH 1931-02-01
7 Cyperus alternifolius subsp. flabelliformis Heeia Wetland, Kaneohe, Oahu Growing in large floating clumps, sometimes rooted, emergent to 4 ft of water. Other species Brachiaria mutica, Ludwigia octovalvis, Coix lacryma-jobi. Preserved_Specimen Very large clumps ca. 10 ft tall, and 10-15 ft in diameter. Crago, L.M. 2005055 Oahu BISH 2005-02-11
8 Cyperus alternifolius subsp. flabelliformis Kawainui Marsh, Northend of dike road on Marsh side Scattered on muddy banks of marsh intermixed with other vegetation in 2-3 inches of water to upper bank areas of wet soil. Also visable across canal on floating mat vegetation of Kawai Nui Marsh. Preserved_Specimen Umbrella-like sedge about 1 meter tall, clumping. Crago, L.M. 2005012 Oahu BISH 2005-01-20
9 Cyperus alternifolius subsp. flabelliformis Haleiwa Back Water, Sands Restaurant Scattered on flat slope clay soil. Preserved_Specimen Suffretescent, 5-10' ht, hollow slender stems. McCulloch, R. 12 Oahu BISH 1975-04-11
10 Cyperus alternifolius subsp. flabelliformis Hamakua District, Waipio Valley Sedge 5 ft. tall collected alongside dirt road in lower part of valley in marshy land, along with Diplazium esculentum. Preserved_Specimen Imada, C. 9926 Hawaii BISH 1999-06-19
11 Cyperus alternifolius subsp. flabelliformis 94-210 Kahualii St, Waipahu Loam soil 0% slope. Preserved_Specimen harsh-toothed edged leaves. Elia, H.V.K. 27 Oahu BISH 1971-04-06
12 Cyperus alternifolius subsp. flabelliformis Manele Bay, along coastal trail heading west Soggy seep area along coastal trail. Associated in seep with other wetland plants such as Eleocharis geniculata, Echinochloa colona, Kyllinga brevifolia, Paspalum urvillei. Preserved_Specimen Sparsely growing clumping sedge. Imada, C. 200718 Lanai BISH 2007-12-09
13 Cyperus alternifolius subsp. flabelliformis Honolulu, 2365 Oahu Ave In rockery. Preserved_Specimen St.John, H. 10496 Oahu BISH 1930-04-27
14 Cyperus alternifolius subsp. flabelliformis Kahuku; James Campbell National Wildlife Refuge; in vicinity of bird-viewing gazebo Growing at edge of Brachiaria mutica zone on dry land near parking area. Preserved_Specimen Clumping sedge. Imada, C. 9230 Oahu BISH 1992-04-05
15 Cyperus alternifolius subsp. flabelliformis W Maui, Paukukalo Coastal fresh water swamps. Preserved_Specimen Plants 4-6 ft ht. Hobdy, R.W. 971 Maui BISH 1981-01-10
16 Cyperus alternifolius subsp. flabelliformis Honolulu, Manoa Valley area, in the garden at 3115 Kaloaluiki Place, the home of A. Kadowaki In garden, grown potted. Preserved_Specimen Stems only ca 18-30 tall, rarely if ever produce spikelets, clump-forming. Kadowaki, A. 713 Oahu BISH 1990-11-10
17 Cyperus alternifolius subsp. flabelliformis Puu Kalena, Waianae Mts, Waianae Kai Cultivated by stream. Preserved_Specimen Persisting fr. St.John, H. 12978 Oahu BISH 1933-03-12
18 Cyperus alternifolius subsp. flabelliformis Wailau Valley, along stream bank near Keahou along stream bank near Keahou Preserved_Specimen Oppenheimer, H.L. 80506 Molokai BISH 2005-08-13
19 Cyperus alternifolius subsp. flabelliformis Lawai Valley, PTBG Common along Lawai Stream. Preserved_Specimen Flynn, T.W. 731 Kauai BISH 1984-01-05
20 Cyperus alternifolius subsp. flabelliformis Honolulu: Makiki Heights, F.G.W. Cooper Estate In flower garden. Preserved_Specimen Flowering, 18-30 inches high, growing in cluster. Garber, D.W. 540 Oahu BISH 1921-03-25
21 Cyperus alternifolius subsp. flabelliformis Waipahu Along stream bank. Preserved_Specimen Hosaka, E.Y. 1279 Oahu BISH 1935-02-24
22 Cyperus alternifolius subsp. flabelliformis UH campus, Sherman Laboratory Growing directly on a cement surface where water drips constantly. Receiving full sun. Preserved_Specimen Plant growing in a dense clump. Stems up to 1.5 m long. Lau, J. 1687 Oahu BISH 1985-11-27
23 Cyperus alternifolius subsp. flabelliformis Honolulu Preserved_Specimen Webb, L. Oahu BISH 1930-11-07
24 Cyperus alternifolius subsp. flabelliformis Kilauea, Volcano House Preserved_Specimen Fagerlund, G.O. 323 Hawaii BISH 1943-02-12
25 Cyperus alternifolius subsp. flabelliformis Trailside, old homestead, Waianae Valley, Waianae District Preserved_Specimen Baker, R.J. Oahu BISH 1933-03-12
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