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Cyperus hillebrandii var. decipiens

(Hillebr.) Kük. (1936)

This name is accepted

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

cyperus

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Description

Key Characters:

Growth Form: Perennials with short and sometimes slightly thickened rhizomes clothed with brown or reddish brown basal sheaths and their fibrous remnants.

Stems: culms 15–60(–90) cm tall, 2–6 mm in diameter near base, trigonous, smooth.

Roots:

Leaves: Leaves simple. alternate Blades stiff, linear, (3–)7–12 mm wide, as long as or longer than the culm. Margins entire. lower sheaths tinged reddish brown. Stipules absent.

Flowers: Flowers in inflorescences relatively lax, with elongated rays 5–18 cm long, spikelets oblong-lanceoloid, 5.5–6 mm long, and glumes pale green and usually tinged pale reddish brown, 3–3.5 mm long. Flowers bisexual (perfect). Corolla (petals) absent. Stamens 3. Ovary superior.

Fruit: Achenes oblong–ellipsoid; trigonous; 1.2–1.5 mm long; 0.5–0.7 mm wide. Seeds 1; seed coat thin; free from pericarp; embryo basal; endosperm abundant.

Ploidy:

Habitat: Ridges; gulches; and along streams; dry forest to mesic forest.

Elevation Range: 360–1,070 m.

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

Kaua'i Endemic
O'ahu Endemic
Lana'i Endemic
Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: H.G.A.Engler (ed.), Pflanzenr., IV, 20(101): 484 (1936)

Other References

Wagner et al. 1990:1418 (K, O, L, WM [as Mariscus hillebrandii subsp. decipiens]); Tucker 1994:87/Wagner & Herbst 1999:1900 (Syn. M. h. subsp. decipiens = C. h. var. decipiens); Munro 514b BISH (L†, 1930)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Cyperus hillebrandii var. decipiens R side of Kipu Kai gap trail, Haupu Range Preserved_Specimen Forbes, C.N. 744 Kauai BISH 1916-11-01
2 Cyperus hillebrandii var. decipiens Maunalei Preserved_Specimen Munro, G.C. 514 Lanai BISH 1930-02-11
3 Cyperus hillebrandii var. decipiens Manawahua, Waianae Preserved_Specimen Rock, J.F.C. 12776 Oahu BISH 1915-12-29
4 Cyperus hillebrandii var. decipiens ridge W of Puu Iki, Mokuleia Preserved_Specimen Webster, G.L. 1170 Oahu BISH 1947-12-07
5 Cyperus hillebrandii var. decipiens Kumuwela, Waimea Preserved_Specimen St.John, H. 13837 Kauai BISH 1933-12-28
6 Cyperus hillebrandii var. decipiens Kauai Preserved_Specimen Rock, J.F.C. 3999 Kauai BISH 1909-01-01
7 Cyperus hillebrandii var. decipiens West Maui, S ridge of Launiupoko Valley open grassy Preserved_Specimen St.John, H. 17712 Maui BISH 1936-12-20
8 Cyperus hillebrandii var. decipiens Waianae Mts., Manawahua Preserved_Specimen MacCaughey, V. 12776 Oahu BISH 1915-12-29
9 Cyperus hillebrandii var. decipiens Waianae Mts., Honouliuli, N fork of valley E of Palikea wooded stream bank Preserved_Specimen St.John, H. 10383 Oahu BISH 1930-02-23
10 Cyperus hillebrandii var. decipiens Waianae Mts., Puu Manawahua grassy W slope Preserved_Specimen St.John, H. 10119 Oahu BISH 1924-12-08
11 Cyperus hillebrandii var. decipiens West Maui, West Maui Forest Reserve, Halepohaku Mountain, large valley below ula ula peak Aspect: NW. uncommon, onvertical walls surrounded by dry shrubland species. Low elevation dry shrubland: Dodonaea viscosa, Wollastonia lavarum, Achyranthes splendens var. splendens, Coleus australis, Peperomia blanda, Sicyos hispidus, Doryopteris decipiens, Bidens menziesil, Schiedea menziesii, Leucaena leucocephala, Bidens cynapifolia, Stapelia gigantea Preserved_Specimen Pezzillo, Z. 412 Maui BISH 2023-04-13
12 Cyperus hillebrandii var. decipiens E branch, middle fork, E Makaleha Gulch, Mokuleia, Waianae Mts. soil talus, shade Preserved_Specimen culms solitary, spikelets green Fosberg, F.R. 33266 Oahu BISH 1951-02-04
13 Cyperus hillebrandii var. decipiens Kuliouou, Koolau Range forest Preserved_Specimen St.John, H. 26915 Oahu BISH 1978-11-26
14 Cyperus hillebrandii var. decipiens Waianae Mts., Mokuleia, below Puu Ahi trail Preserved_Specimen Wilbur, R.L. 404 Oahu BISH 1947-12-07
15 Cyperus hillebrandii var. decipiens E branch, middle fork, E Makaleha Gulch, Mokuleia, Waianae Mts. soil talus, shade Preserved_Specimen culms solitary, spikelets green Fosberg, F.R. 33266 Oahu BISH 1951-02-04
16 Cyperus hillebrandii var. decipiens W Maui, Puu Hipa, Launiupoko Scattered in dry native shrubland. Preserved_Specimen Hobdy, R.W. 4232 Maui BISH 2005-11-22
17 Cyperus hillebrandii var. decipiens Waianae Range, S Kaaihukai gulch dry Preserved_Specimen Wilbur, R.L. 523 Oahu BISH 1948-03-26
18 Cyperus hillebrandii var. decipiens Lualualei under Sapindus, grassy slopes Preserved_Specimen colony Takeuchi, W.N. 3264 Oahu BISH 1987-01-18
19 Cyperus hillebrandii var. decipiens Puu Kaua, Waianae Mts., 1st E ridge N of peak open dry forest Preserved_Specimen spikelets compressed, green or tipped with brown St.John, H. 21523 Oahu BISH 1946-03-17
20 Cyperus hillebrandii var. decipiens Palawai. Southern Waianae Mountains. Growing in dry forest along Honouliuli contour road on mauka side. Growing in mostly exotic forest of Eucalyptus spp., Toona ciliata, Psidium cattleianum, and Schinus terebinthifolius. Also growing with Sapindus oahuensis, Melinis, and Urochloa maxima. Preserved_Specimen Many small clumps scattered along the road in this section. These plants may eventually be smothered by Urochloa maxima. Thomas, M.K. 644 Oahu BISH 2024-04-11
21 Cyperus hillebrandii var. decipiens NW of Puu Kanehoa, Honouliuli, Waianae Mts. grassy Preserved_Specimen St.John, H. 10421 Oahu BISH 1934-01-07
22 Cyperus hillebrandii var. decipiens NW of Puu Kanehoa, Honouliuli, Waianae Mts. grassy Preserved_Specimen St.John, H. 10421 Oahu BISH 1934-01-07
23 Cyperus hillebrandii var. decipiens ridge above Ekahanui gulch under Charpentiera; grassy Preserved_Specimen Takeuchi, W.N. 2053 Oahu BISH 1985-03-10
24 Cyperus hillebrandii var. decipiens Honouliuli, N branch, S Kaaikukai Gulch Preserved_Specimen Webster, G.L. 1373 Oahu BISH 1948-03-26
25 Cyperus hillebrandii var. decipiens R side of Waialae Iki Preserved_Specimen Forbes, C.N. 2434 Oahu BISH 1917-03-02
26 Cyperus hillebrandii var. decipiens Waianae Mountains, Puu Kaua In forest Preserved_Specimen Madden, G.D. Oahu BISH 1938-02-27
27 Cyperus hillebrandii var. decipiens Honopu Beach Preserved_Specimen Corn, C. Kauai BISH 1984-07-19
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