Cyperus sulcinux

Primary tabs

Cyperus sulcinux


Annual with fibrous, yellowish roots. Leaves rigid, flat or canaliculate, gradually acuminate, scabrid at the top, narrow, ½-2 mm wide; Inflorescence relatively large, simple, loose, rarely subcapitate. Stamen 1;


Asia-Tropical: Borneo present (Sabah present, Sarawak present); India present; Jawa (Jawa present); Maluku (Maluku present); New Guinea present; Philippines (Philippines present), Australasia: Queensland (Queensland present), Farther India present, Kangean Archipelago present, Lesser Sunda Is present, Luzon present, Madura present, Mindanao present, Palawan present, Talaud Is present, Ternate present, W. Sumba present, tropical Australia present
From India through Farther India to tropical Australia (Queensland), in Malesia very local: in a few localities in Java, Kangean Archipelago, Madura, Borneo (Sarawak, North Borneo), the Philippines (Palawan, Luzon, Mindanao), the Moluccas (Talaud Is., Burn, Ternate), Lesser Sunda Is. (W. Sumba), and New Guinea.


According to CLARKE’S original description the flowers should be diandrous. I always found only 1 stamen in the numerous flowers dissected.


Merr. 1921: En. Born.: 58
Clarke 1907 – In: Philip. J. Sc.: Bot. 80
Clarke 1923 – In: En. Philip.: 111
Clarke 1968 – In: Back. & Bakh.f., Fl. Java 3: 471
KERN 1954: p. 46. – In: Reinwardtia: f. 7
CAMUS 1912 – In: Fl. Gén. I.-C.: 34
CAMUS 1912 – In: Fl. Gén. I.-C.: 29
VALCK. SUR. 1898: Gesl. Cyp. Mal. Arch: 63: t. 2 f. 14, t. 3
S. T. BLAKE 1947 – In: J. Arn. Arb.: 220
Merr. 1921: En. Born.: 58
KÜK. 1936: p. 364. – In: Pfl. R.: f. 43
BACK. 1949 – In: Bekn. Fl. Java, (em. ed.): fam. 246, p. 40