Cyperus pulcherrimus

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Cyperus pulcherrimus

Description

Perennial, often flowering the first year; Leaves flat or slightly canaliculate, rigidulous, gradually acuminate, scaberulous at the top, 2-4(-6) mm wide; Inflorescence compound or decompound, rather open to very dense, 3-10(-20) cm across. Stamen 1;

Distribution

Asia-Tropical: Borneo present; India present; Jawa (Jawa present); Malaya (Peninsular Malaysia present); Maluku (Maluku); New Guinea present; Philippines (Philippines present); Sulawesi (Sulawesi present); Sumatera (Sumatera present); Thailand (Thailand present), Ceylon present, Lesser Sunda Is, Luzon present, Palawan present, Tawitawi present
From Ceylon and India through Thailand and Indo-China to Malesia: not rare in the Malay Peninsula, rather common throughout Java, but a few times collected in Sumatra, Borneo, Celebes, and New Guinea; still unknown from the Lesser Sunda Is. and the Moluccas; apparently very rare in the Philippines; Luzon, Palawan, Tawitawi (not mentioned in MERRILL'S Enumeration, although already collected in 1906).

Notes

Whether or not the glumes in herbarium specimens are incurved depends on the degree of maturity of the spikelets. Before the glumes have curled inwards the spikelets are c. 1¼ mm wide, later on 1 mm. VALCKENIER SURINGAR’S Ƒ. rectiglumis (with straight glumes and spikelets 1¼ mm wide) was based on specimens with relatively young spikelets.

Citation

Ridl. 1925 – In: Fl. Mal. Pen.: 142
KUNTH 1968 – In: Back. & Bakh.f., Fl. Java 3: 476
Miq. 1856 – In: Fl. Ind. Bat.: 268
SCHEFFER 1874 – In: Nat. Tijd. N. I.: 48
Clarke 1884 – In: J. Linn. Soc. Bot.: 132
KERN 1954 – In: Reinwardtia: 36
BACK. 1949 – In: Bekn. Fl. Java, (em. ed.): fam. 246, p. 30
BACK. 1928: Onkr. Suiker.: 133
Koord. 1911 – In: Exk. Fl. Java: 189
KUNTH 1893 – In: Fl. Br. Ind.: 600
Clarke 1909: Ill. Cyp.: t. 10 f. 1-3
STEUD. 1855 – In: Syn.: 22
VALCK. SUR. 1898: Gesl. Cyp. Mal. Arch: 94: t. 4 f. 12-13
BOECK. 1868 – In: Linnaea: 573
Ridl. 1907 – In: Mat. Fl. Mal. Pen. (Monoc.): 64
KÜK. 1936 – In: Pfl. R.: 242
CAMUS 1912 – In: Fl. Gén. I.-C.: 48
Miq. 1856 – In: Fl. Ind. Bat.: 267