Carex graeffeana

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Carex graeffeana


Leaves basal and subbasal, often 1-2 higher up the stem, stiff, subcoriaceous, flat but margins often revolute, scabrid on the nerves, long-attenuate, greyish or glaucous-green, much overtopping the stems, 3-12 mm wide.


Asia-Tropical: New Guinea present; Philippines (Philippines present), Fiji Is present, Flores present, Lesser Sunda Is present, Leyte present, Luzon present, Mindanao present, Mt Gedeh present, Mt Kinabalu present, N. Borneo present, Negros present, New Britain present, Pacific: Samoa (Samoa present), W. Java present, W. Polynesia present
W. Polynesia (Samoa, Fiji Is.) and Malesia: New Guinea (incl. New Britain), Philippines (Luzon, Negros, Leyte, Mindanao), N. Borneo (Mt Kinabalu), Lesser Sunda Is. (Flores), W. Java (Mt Gedeh).


Nelmes (1938) distinguished between C. graeffeana (Fiji) with its var. samoensis (Samoa), C. philippinensis (Java, Philippines, New Guinea), and C. exploratorum (Borneo), mainly using width of leaves, number and length of spikelets, and size of utricles as specific characters. For the New Guinea specimens two more specific names are available, C. pandanus Ohwi and C. euphlebia S. T. Blake. From Nelmes's later publications it is clear that the characters used for discrimination are by far not so constant as was originally supposed. There is indeed considerable variation in the specimens collected in New Guinea or in the Philippines, and even in those from the only Javanese locality. The utricles are remarkably small in the Fiji specimens, but not in those from Samoa (the latter Nelmes in 1955 no longer treated as varietally distinct.) Carex exploratorum is only known from the type collection (Mt Kinabalu, Clemens 34297), in which the much compressed, sterile, and elongate utricles are apparently diseased. The few well-developed, nut- bearing utricles hardly differ from those of the other Malesian materials. The glumes are larger than usual, but not until more Kinabalu specimens are available will it be possible to judge of their taxonomical value.
On Mt Pulog (Luzon) the lower spikelets are often branched into a raceme of secondary spikelets, the total number of spikelets reaching up to c. 50.


Boeck. 1936 – In: Hochr., Candollea 6: 433
Nelmes 1954 – In: Reinwardtia: 381
Nelmes 1951 – In: Reinwardtia: 418
Nelmes 1951 – In: Reinwardtia: 419
Boeck. 1923 – In: En. Philip.: 138
Kuk. 1909 – In: Pfl. R. Heft: 403
Kern 1968 – In: Back. & Bakh.f., Fl. Java 3: 494
Steen. 1972: Mt. Fl. Java: pl. 14-9
Boeck. 1907 – In: Philip. J. Sc.: Bot. 107
Nelmes 1938: Kew Bull.: 109
Back. 1949 – In: Bekn. Fl. Java, (em. ed.): fam. 246, p. 62
Merr. 1910 – In: Philip. J. Sc.: Bot. 335
Clarke 1904 – In: J. Linn. Soc. Bot.: 5
Boeck. 1955: Kew Bull.: 317
Nelmes 1949: Kew Bull.: 385, 392
Boeck. 1911 – In: Philip. J. Sc.: Bot. 62
Boeck. 1938 – In: Bot. Jahrb.: 264