Thoracostachyum bancanum

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Thoracostachyum bancanum


Leaves longer than the stems, usually glaucous, indistinctly reticulate when dry, scabrous on the margins, 4-20 mm wide. Inflorescence loose, with scabrous branches, 2-7 cm in diam., with 5-60 spikelets; Flowers 1¾-2 mm long.


Asia-Tropical: Borneo present; Malaya (Peninsular Malaysia present, Singapore present); Maluku (Maluku present); New Guinea present; Sumatera (Sumatera present), Banka present, Buru present, Johore present, Malacca present, Mentawei Is present, Pahang present, Perak present, Riouw Arch present, Tonkin present
Tonkin; in Malesia: Sumatra (also Mentawei Is., Banka, and Riouw Arch.), Malay Peninsula (Perak, Pahang, Malacca, Johore, Singapore), Borneo, Moluccas (Buru), and New Guinea.


T. subcapitatum VALCK. SUR. is a form with elongated spikelets apparently due to the attacks of an Ustilago. This abnormality was also described as T. bancanum var. longispica CLARKE. It occurs with the normal form.
A specimen from “E. Java, Tosari”, leg. RIDLEY in the Kew Herbarium was obviously mislabelled (cf. ).


Ridl. 1906 – In: J. Str. Br. R. As. Soc.: 226
Clarke 1894 – In: Fl. Br. Ind.: 680
OHWI 1942 – In: Bot. Mag. Tokyo: 210
KURZ 1898 – In: J. Linn. Soc. Bot.: 94
UITTIEN 1936: p. 136. – In: Rec. Trav. Bot. Néerl.: f. la, If, 2a
Merr. 1921: En. Born.: 65
Clarke 1908 – In: Kew Bull.: 53
Miq. 1870: Illustr.: 63
SCHEFF. 1874 – In: Nat. Tijd. N. I.: 89
KURZ 1865 – In: Bot. Zeit.: 204
CAMUS 1912 – In: Fl.Gén. I.-C.: 174
Ridl. 1925 – In: Fl. Mal. Pen.: 171
SCHEFF. 1874 – In: Nat. Tijd. N. I.: 88
Merr. 1925: En. Born.: 66
Miq. 1870: Illustr.: 59
KURZ 1907 – In: Mat. Fl. Mal. Pen. (Monoc.): 102
S. T. BLAKE 1947 – In: J. Arn. Arb.: 208
Clarke 1909: Ill. Cyp.: f. 12-20