Carex brachyathera

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Carex brachyathera


Leaves basal or 1-2 higher on the stem, shorter than the stem, flat, or involute when dry, stiffish, asperous, long-attenuate, 1-3.5 wide.


Asia-Tropical: New Guinea present, Mt Carstensz present, Mt Sarawaket present, Mt Wilhelmina present, Ryu Kyu Is present, Southern America: Argentina Northeast (Formosa present)
Ryu Kyu Is., Formosa; in Malesia: New Guinea (Mt Carstensz, Mt Wilhelmina in W., Mt Sarawaket in E.).


The New Guinea collections exhibit a high degree of variability in size, length of bracts, spikelets, and utricles, probably due to their growing at high altitude, often in uncongenial habitats. I do not see any reason to treat them as varietally distinct from the Formosan plants, as was done by Koyama, on account of the longer bracts and — according to Nelmes — sometimes digynous flowers.


Koyama 1962 – In: J. Fac. Sc. Un. Tokyo: 158
Ohwi 1936: p. 332. – In: Mem. Coll. Sc. Kyoto Imp. Un.: f. 4, t. 8 f. 5
Kuk. 1951 – In: Reinwardtia: 410
Akiyama 1955: Car. Far East. Reg. Asia: 133: t. 118
Nelmes 1949: Kew Bull.: 384
S. T. Blake 1947 – In: J. Arn. Arb.: 113