Cyperus dubius
Content
Description
Perennial with short rhizome;
Leaves weak, flat, gradually acuminate, slightly scaberulous at the top, (1½-)2-5 mm wide.
Inflorescence contracted into a very dense, lobed head consisting of 1-6 confluent spikes, broadly ovoid, subglobose or suboblong, 1-2 cm long and wide.
Stamens 3;
Distribution
Anambas present, Asia-Tropical: India present ‒ present; Philippines (Philippines present), Banka present, Billiton present, Ceylon present, Luzon present, Merak I. in the Sunda Straits present, Natuna Is present, Palabuan Ratu present, Riouw Archipelago present, S. China present, SW. coast of Java present, Victory I. near Borneo present, along the shores of the South China Sea present, both coasts of the Malay Peninsula present, sandy beaches of the East Coast of Sumatra present, steppes and coastal regions of Africa present
Widely distributed in the steppes and coastal regions of Africa; from Ceylon and India through Further India to S. China: in Malesia: common on both coasts of the Malay Peninsula and on the sandy beaches of the East Coast of Sumatra; along the shores of the South China Sea (Victory I. near Borneo, Anambas and Natuna Is., Riouw Archipelago, Banka, Billiton, Merak I. in the Sunda Straits); also on the SW. coast of Java (Palabuan Ratu); Philippines (Luzon). See map in .
Notes
Owing to KUNTH’s misinterpretation of RUMPHIUS’S Cyperus longus, Herb. Amb. t. 2 f. 1, the species is also credited to the Moluccas by MIQUEL, VALCKENIER SURINGAR and KÜKENTHAL. It does not reach eastern Malesia. MERRILL rightly reduced RUMPHIUS’S figure to Cyperus pedunculatus (= Remirea maritima).
BOECKELER’S ‘Philippine’ record (as C. cruentus) was based on CUMING 2372, which was from Malacca; see .
BOECKELER’S ‘Philippine’ record (as C. cruentus) was based on CUMING 2372, which was from Malacca; see .
Citation
KERN 1961 – In: Reinwardtia: 65
KÜK. 1936 – In: Pfl. R.: 563
BOECK. 1870 – In: Linnaea: 336
Merr. 1923 – In: En. Philip.: 113
Clarke 1884 – In: J. Linn. Soc. Bot.: 197
BACK. 1949 – In: Bekn. Fl. Java, (em. ed.): fam. 246, p. 45
cf. KERN 1954 – In: Reinwardtia: 59
CAMUS 1912: p. 75. – In: Fl. Gén. I.-C.: f. 10, 1-4
Koord. 1911 – In: Exk. Fl. Java: 187
KUNTH 1909: Ill. Cyp.: t. 21 f. 1-6
Merr. 1923 – In: En. Philip.: 113
VALCK. SUR. 1898: Gesl. Cyp. Mal. Arch: 150: t. 6 f. 5
ROTTB. 1922 – In: Exk. Fl. Java: f. 205
Ridl. 1925 – In: Fl. Mal. Pen.: 148
Ridl. 1907 – In: Mat. Fl. Mal. Pen. (Monoc.): 72
ROTTB. 1968 – In: Back. & Bakh.f., Fl. Java 3: 473
Clarke 1893 – In: Fl. Br. Ind.: 620
Miq. 1856 – In: Fl. Ind. Bat.: 286
Koord. 1911 – In: Exk. Fl. Java: 187
Merr. 1921: En. Born.: 57