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Cyperus hypochlorus var. brevior

Kük. (1936)

This name is accepted

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

‘ahu‘awa

Description

Key Characters:

Growth Form: Perennials with short, woody rhizomes clothed with dark reddish brown or purplish brown scales and their fibrous remnants.

Stems: culms stout, 50–130 cm tall, 5–16 mm in diameter near base, trigonous, smooth.

Roots:

Leaves: Leaves simple. Leaves several. Blades, linear, as long as or slightly longer than the culm, 3–7 mm wide, coriaceous. Margins entire. Sheaths dark reddish brown. Stipules absent.

Flowers: Flowers in inflorescences umbelliform, compound or partially compound, moderately dense, 5–18 cm long, 7–25 cm wide, rays 6–12, spreading, 3–16 cm long, once branched, each branch with 2–4 secondary rays, spikes cylindrical to oblong–elliptic, 2.5–4 cm long, 1.2–2 cm wide, densely bearing numerous spikelets, bracteoles setaceous, shorter than to as long as the subtending lateral spikes; involucral bracts 5– 10, the lower ones much longer than the inflorescence and up to 12 mm wide; spikelets usually 3–5–flowered, widely spreading to slightly reflexed, linear-lanceoloid, subterete, slightly turgid, 6–7 mm long, 1.5– 2.5 mm wide, rachilla broadly winged; glumes green and often tinged pale yellowish brown, chartaceous with hyaline upper margins, oblong-lanceolate or oblong–elliptic, 3.5–4.5 mm long, 1.5–2.5 mm wide, laxly imbricate, suberect but those in upper part of spikelet weakly spreading, 7–nerved or 9–nerved, midnerve prolonged into a minute recurved mucro. Flowers bisexual (perfect). Corolla (petals) absent. Stamens 3. Ovary superior; styles 5–6 mm long.

Fruit: Achenes oblong–ellipsoid; trigonous; 1.7–2 mm long; ca. 0.8 mm wide. Seeds 1; seed coat thin; free from pericarp; embryo basal; endosperm abundant.

Ploidy:

Habitat: Occurring in mesic forest.

Elevation Range: 350–760 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

Kaua'i Endemic
O'ahu Endemic
Molokai Endemic
Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: H.G.A.Engler (ed.), Pflanzenr., IV, 20(101): 409 (1936)

Other References

Wagner et al. 1990:1418 (K, O, Mo, M [as Mariscus hypochlorus subsp. brevior]); Tucker 1994:87/Wagner & Herbst 1999:1900 (Syn. M. h. subsp. brevior = C. h. var. brevior)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Cyperus hypochlorus var. brevior Kük. Kawaiiki valley; side valley off Koaie Canyon; helicopter drop on Kaluahaulu ridge. PRESERVED_SPECIMEN K. R. Wood 5759 Kauai US 11/1/1996
2 Cyperus hypochlorus var. brevior Kük. kawaiiki valley; side valley off koaie canyon; helicopter drop on kaluahaulu ridge. PRESERVED_SPECIMEN k. r. wood 5759 Kauai US 11/1/1996
3 Cyperus hypochlorus var. brevior Kük. Moloka`i District, Land of Makakupaia, just inside forest reserve Roadside and banks PRESERVED_SPECIMEN W. L. Wagner, J. Lau & G. Hughes 6673 Molokai US 1/18/1992
4 Cyperus hypochlorus var. brevior Kük. ridge above holt house PRESERVED_SPECIMEN meebold, a. collector number: 24960 Oahu BISH 11/1/1935
5 Cyperus hypochlorus var. brevior Kük. W Maui, Wailuku District, Pohakea Gulch Uncommon on steep slopes in mesic forest. Vegetation: Metrosideros, Coprosma, Dodonaea, Myrsine, Dubautia, Pleomele, Leptecophylla, Wikstroemia, Bidens, Carex, Nestegis, Santalum, Alyxia, Freycinetia, Doodia, Sadleria, Dryopteris. PRESERVED_SPECIMEN Oppenheimer, H.L. H110729 Maui BISH 11/11/2007
6 Cyperus hypochlorus var. brevior Kük. s ridge to puu hapapa talus rock; with Neraudia melastomifolia, Phytolacca octandra, Schinus PRESERVED_SPECIMEN takeuchi, w.n. paquin, d. collector number: 2802 Oahu BISH 9/1/1986
7 Cyperus hypochlorus var. brevior Kük. Hamakua PRESERVED_SPECIMEN Hillebrand, W.B. s.n. Maui BISH
8 Cyperus hypochlorus var. brevior Kük. waianae mts, nw of puu kanehoa, honouliuli grassy, dry PRESERVED_SPECIMEN st.john, h. collector number: 14020 Oahu BISH 1/7/1934
9 Cyperus hypochlorus var. brevior Kük. ridge above Holt house PRESERVED_SPECIMEN Meebold, A. 24960 Oahu BISH 11/1/1935
10 Cyperus hypochlorus var. brevior Kük. Kaluaa PRESERVED_SPECIMEN Kondo, Y. s.n. Oahu BISH 12/13/1958
11 Cyperus hypochlorus var. brevior Kük. upper nihoa below road cut Bidens torta PRESERVED_SPECIMEN takeuchi, w.n. shimabukoro, c. collector number: 2768 Oahu BISH 8/22/1986
12 Cyperus hypochlorus var. brevior Kük. hamakua PRESERVED_SPECIMEN hillebrand, w.b. lydgate, j.m. collector number: s.n. BISH
13 Cyperus hypochlorus var. brevior Kük. Kaluaaha Valley PRESERVED_SPECIMEN Forbes, C.N. 343 Mo Molokai BISH 8/1/1912
14 Cyperus hypochlorus var. brevior Kük. Maui, Moloka'I District, Land of Makakupaia. Just inside forest reserve. Roadside and banks. With Pinus, Dodonaea. PRESERVED_SPECIMEN Wagner, W.L. 6673 Molokai BISH 1/18/1992
15 Cyperus hypochlorus var. brevior Kük. waianae range, palehua PRESERVED_SPECIMEN maa Oahu BISH 10/15/1960
16 Cyperus hypochlorus var. brevior Kük. w maui, lihau In grassland. PRESERVED_SPECIMEN hobdy, r.w. gagne collector number: 3529 Maui BISH 1/19/1993
17 Cyperus hypochlorus var. brevior Kük. mahanaloa gulch Slightly upstream of Euphorbia haeleeleana exclosure; in a sloping dry terrain under a native canopy. PRESERVED_SPECIMEN obata, j.k. perlman, s. collector number: s.n. Kauai BISH 7/10/1991
18 Cyperus hypochlorus var. brevior Kük. Puu Kahili, Wahiawa, FR boundary road muddy road PRESERVED_SPECIMEN Stone, B.C. 774 Kauai BISH 6/15/1955
19 Cyperus hypochlorus var. brevior Kük. Mahanaloa Gulch Slightly upstream of Euphorbia haeleeleana exclosure; in a sloping dry terrain under a native canopy. PRESERVED_SPECIMEN Obata, J.K. s.n. Kauai BISH 7/10/1991
20 Cyperus hypochlorus var. brevior Kük. kaluaa PRESERVED_SPECIMEN kondo, y. collector number: s.n. Oahu BISH 12/13/1958
21 Cyperus hypochlorus var. brevior Kük. S ridge to Puu Hapapa talus rock; with Neraudia melastomifolia, Phytolacca octandra, Schinus PRESERVED_SPECIMEN Takeuchi, W.N. 2802 Oahu BISH 9/1/1986
22 Cyperus hypochlorus var. brevior Kük. W Maui, Lahaina District, ridge NE of Kauaula Valley; Kauaula/Manowaiopae Divide Colonizing recently burned areas with Dodonaea, Dianella, Pteridium, Melinis. PRESERVED_SPECIMEN Oppenheimer, H.L. Perlman, S.; Brosius, C. Collector Number: H100712 Maui BISH 10/4/2007
23 Cyperus hypochlorus var. brevior Kük. W Maui, Lahaina District, ridge NE of Kauaula Valley; Kauaula/Manowaiopae Divide Colonizing recently burned areas with Dodonaea, Dianella, Pteridium, Melinis. PRESERVED_SPECIMEN Oppenheimer, H.L. H100712 Maui BISH 10/4/2007
24 Cyperus hypochlorus var. brevior Kük. upper Nihoa below road cut Bidens torta PRESERVED_SPECIMEN Takeuchi, W.N. 2768 Oahu BISH 8/22/1986
25 Cyperus hypochlorus var. brevior Kük. w maui, lahaina district, ridge ne of kauaula valley; kauaula/manowaiopae divide Colonizing recently burned areas with Dodonaea, Dianella, Pteridium, Melinis. PRESERVED_SPECIMEN oppenheimer, h.l. perlman, s.; brosius, c. collector number: h100712 Maui BISH 10/4/2007
26 Cyperus hypochlorus var. brevior Kük. n honouliuli PRESERVED_SPECIMEN takeuchi, w.n. collector number: 3894 BISH 7/17/1988
27 Cyperus hypochlorus var. brevior Kük. Waianae Mts, NW of Puu Kanehoa, Honouliuli grassy, dry PRESERVED_SPECIMEN St. John, H. 14020 Oahu BISH 1/7/1934
28 Cyperus hypochlorus var. brevior Kük. palolo-waialae ridge Plants growing with other ornamentals (and weeds) in planter bed. PRESERVED_SPECIMEN macdaniels, l.h. collector number: 494 Midway Atoll BISH 1/27/1927
29 Cyperus hypochlorus var. brevior Kük. West Maui, Paunau-Kuhua divide Acacia koa PRESERVED_SPECIMEN St. John, H. 17703 Maui BISH 12/19/1936
30 Cyperus hypochlorus var. brevior Kük. W Maui, Lihau In grassland. PRESERVED_SPECIMEN Hobdy, R.W. 3529 Maui BISH 1/19/1993
31 Cyperus hypochlorus var. brevior Kük. puu kahili, wahiawa, fr boundary road muddy road PRESERVED_SPECIMEN stone, b.c. collector number: 774 Kauai BISH 6/15/1955
32 Cyperus hypochlorus var. brevior Kük. Waianae Mts, Mauna Kapu below dry ridge PRESERVED_SPECIMEN Christophersen, E. 1542 Oahu BISH 2/12/1931
33 Cyperus hypochlorus var. brevior Kük. waianae mts., kamaileunu ridge, separating waianae kai and makaha valleys dry shrubby talus and ledges PRESERVED_SPECIMEN wagner, w.l. takeuchi, w.; obata, j.; r.yee collector number: 5094 Oahu BISH 12/11/1983
34 Cyperus hypochlorus var. brevior Kük. N Honouliuli bare dirt, moderate slopes; with Myrsine lanaiensis PRESERVED_SPECIMEN Takeuchi, W.N. 3894 Oahu BISH 7/17/1988
35 Cyperus hypochlorus var. brevior Kük. west maui, paunau-kuhua divide Acacia koa PRESERVED_SPECIMEN st.john, h. jones, s. collector number: 17703 Maui BISH 12/19/1936
36 Cyperus hypochlorus var. brevior Kük. Waianae Mts, Palehua PRESERVED_SPECIMEN Skottsberg, C.J.F. 300 Oahu BISH 8/25/1922
37 Cyperus hypochlorus var. brevior Kük. Waianae Mts., Kamaileunu ridge, separating Waianae Kai and Makaha Valleys PRESERVED_SPECIMEN Wagner, W.L. 5094 Oahu BISH 12/11/1983
38 Cyperus hypochlorus var. brevior Kük. W Maui, Wailuku District, Pohakea Gulch Uncommon on steep slopes in mesic forest. Vegetation: Metrosideros, Coprosma, Dodonaea, Myrsine, Dubautia, Pleomele, Leptecophylla, Wikstroemia, Bidens, Carex, Nestegis, Santalum, Alyxia, Freycinetia, Doodia, Sadleria, Dryopteris. PRESERVED_SPECIMEN Oppenheimer, H.L. Baldwin, B. Collector Number: H110729 Maui BISH 11/11/2007
39 Cyperus hypochlorus var. brevior Kük. waianae mts, palehua PRESERVED_SPECIMEN skottsberg, c.j.f. collector number: 300 Oahu BISH 8/25/1922
40 Cyperus hypochlorus var. brevior Kük. Palolo-Waialae ridge PRESERVED_SPECIMEN MacDaniels, L.H. 494 Oahu BISH 1/27/1927
41 Cyperus hypochlorus var. brevior Kük. w maui, wailuku district, pohakea gulch Uncommon on steep slopes in mesic forest. Vegetation: Metrosideros, Coprosma, Dodonaea, Myrsine, Dubautia, Pleomele, Leptecophylla, Wikstroemia, Bidens, Carex, Nestegis, Santalum, Alyxia, Freycinetia, Doodia, Sadleria, Dryopteris. PRESERVED_SPECIMEN oppenheimer, h.l. baldwin, b. collector number: h110729 Maui BISH 11/11/2007
42 Cyperus hypochlorus var. brevior Kük. Waianae Range, Palehua PRESERVED_SPECIMEN Maa s.n. Oahu BISH 10/15/1960
43 Cyperus hypochlorus var. brevior Kük. kaluaaha valley PRESERVED_SPECIMEN forbes, c.n. collector number: 343 mo Molokai BISH 8/8/1912
44 Cyperus hypochlorus var. brevior Kük. waianae mts, mauna kapu below dry ridge PRESERVED_SPECIMEN christophersen, e. wilder, g.p.; hume, e.p. collector number: 1542 Oahu BISH 2/12/1931
45 Cyperus hypochlorus var. brevior Kük. Waianae Range, Palehua rock, woods PRESERVED_SPECIMEN Degener, O. 17623 Oahu BISH 11/23/1935
46 Cyperus hypochlorus var. brevior Kük. waianae range, palehua rock, woods PRESERVED_SPECIMEN degener, o. collector number: 17623 Oahu BISH 11/23/1935
47 Cyperus hypochlorus var. brevior Kük. Land of Makakupaia Just inside forest reserve. Roadside and banks. PRESERVED_SPECIMEN W. L. Wagner 6673 Molokai PTBG 1/18/1992
48 Cyperus hypochlorus var. brevior Kük. Kuia NAR, Kuia Valley, accessed from Nuololo Trail on N facing slope. Metrosideros-Acacia Mesic Forest PRESERVED_SPECIMEN Natalia Tangalin 2071 Kauai PTBG 7/1/2009
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