Cyperus cephalotes

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Cyperus cephalotes

Description

Perennial. Leaves rather rigid, canaliculate at the base, otherwise flat, gradually narrowed into the triquetrous, scabrid top, grassgreen or greyish green, 2-4 mm wide; Inflorescence an ovoid or conical, lobed head consisting of 1-4 glomerules, ½-1½ cm across. Stamens 3;

Distribution

Agu River branch of Middle Fly River present, Asia-Tropical: India present; New Guinea present, E. Borneo present, Farther India present, Papua present, S. China present, W. Kutei present, W. and E. Java present, tropical Australia present
From India, Farther India, and S. China to tropical Australia, in Malesia: in a few localities in W. and E. Java, E. Borneo (W. Kutei), and New Guinea (Papua: Agu River branch of Middle Fly River).

Notes

On this species with its curious style and nut the genera Hydroschoenus, Anosporum, and Trentepohlia were based. The corky thickenings on the nut were mistaken for a gynophore by PFEIFFER, l.c., who described a collection from W. Java as a new species of the African genus Ficinia; see .
The corky tissue on the nuts enables dispersal by water, like in C. platystylis. See .
KÜKENTHAL, l.c., mentions the species also from “Malakka (GRIFFITH!)”. The GRIFFITH collection (n. 6172) originates from Burma.

Citation

COERT 1934: p. 12. – In: Trop. Natuur. f. 8
KÜK. 1936 – In: Pfl. R. p 291
Miq. 1856 – In: Fl. Ind. Bat. p 296
Clarke 1909: Ill. Cyp. t. 6
ZOLL. 1854 – In: Syst. Verz. p 63
VAHL 1922 – In: Exk. Fl. Java. f. 206
SCHEFFER 1874 – In: Nat. Tijd. N. I. p 47
Miq. 1856 – In: Fl. Ind. Bat. p 271
VAHL 1893 – In: Fl. Br. Ind. p 597
STEUD. 1855 – In: Syn. p 71
NEES 1834 – In: Wight, Contr. p 92
Clarke 1884: 25, 34. – In: J. Linn. Soc. Bot. t. 1 f. 1-6
CAMUS 1912: p. 44. – In: Fl. Gén. I.-C. f. 4, 1-4
VALCK. SUR. 1898: Gesl. Cyp. Mal. Arch: 77. t. 4 f. 1
KERN 1968 – In: Back. & Bakh.f., Fl. Java 3. p 469
BACK. 1949 – In: Bekn. Fl. Java, (em. ed.). fam. 246, p. 28
Benth. 1878 – In: Fl. Austr. p 263
BOECK. 1870 – In: Linnaea. p 411
Koord. 1911 – In: Exk. Fl. Java. p 188