Cyperus cyperinus
Content
Description
Perennial with very short rhizome;
Leaves shining greyish green, rigid, flat or canaliculate, long-attenuate, scabrid on margins and keel, 3-6 mm wide;
Inflorescence simple (very rarely subcompound), usually contracted and head-like.
Stamens 3;
Distribution
Asia-Tropical: India present, Australasia: Queensland (Queensland present), Farther India present, Melanesia present, Polynesia present, Ryu Kyu Is present, S. and E. China present, SE. Asia present, Southern America: Argentina Northeast (Formosa present)
From SE. Asia (India, Farther India, S. and E. China, Formosa, Ryu Kyu Is.) to Melanesia, Polynesia and Australia (Queensland); common throughout Malesia.
Notes
Typical, fruiting specimens can be distinguished from the closely related C. cyperoides by the stiff leaves, the contracted inflorescence, the shorter and denser spikes, the obliquely erect, darker spikelets, the broader, more obtuse glumes, and the broader, ellipsoid nuts; all these characters are very variable. See also varieties.
Citation
Ridl. 1907 – In: Mat. Fl. Mal. Pen. (Monoc.): 73
Clarke 1909: Ill. Cyp.: f. 3-4
ZOLL. 1854 – In: Syst. Verz.: 63
VAHL 1907 – In: Philip. J. Sc.: Bot. 87
KÜK. 1936 – In: Candollea: 424
Koord. 1911 – In: Exk. Fl. Java: 187
Clarke 1893 – In: Fl. Br. Ind.: 621
KÜK. 1936 – In: Pfl. R.: 518
KERN 1968 – In: Back. & Bakh.f., Fl. Java 3: 474
Ridl. 1925 – In: Fl. Mal. Pen.: 149
BACK. 1928: Onkr. Suiker: 143: t. 143
Merr. 1923 – In: En. Philip.: 112
BACK. 1949 – In: Bekn. Fl. Java, (em. ed.): fam. 246, p. 47