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THAI FOREST BULLETIN (BOTANY) 36

Distribution.— Laos, south and southwest China, Burma, East Himalayas

Ecology.— Forest (seasonal evergreen hardwood, pine or mixed forest, especially disturbed or degraded areas, bamboo thickets and scrub, roadsides; often dry or sandy soil; 150–1700 m alt.

Notes.— Over 30 collections of M. bracteata have been seen from Thailand, 22 since 1992 (of which those here cited represent additional locality records). It is similar to M. pruriens in its rhombic-ovate leaves with lateral veins running into margin, small flowers and small linear-oblong fleshy fruit, differing in leaves which are mostly thicker-textured, veins usually conspicuous, inflorescence more robust with bracts or scars in lower, flowers part, bracts often long persistent and fruit often broader (to 1.5 rather than to 1 cm) and never markedly “S-shaped”.

INTRODUCED SPECIES

Mucuna warburgii Lauterb. & K.Schum., Fl. Schutzgeb. Sudsee: 365. 1910;. Verdcourt, Man. New Guinea Leg: 457. 1979.

Very different from all native species in flower colour and shape. Flowers large bright orange-red, wings and keel 6–8 cm, narrow and curved throughout length rather than straight with sharply curved apex. Fruit large linear-oblong at least 20 cm long with obliquely transverse lamellae.

Thailand.— NORTHERN: Chiang Mai [Chiang Mai City, 6 Oct 1984, Anderson 5236 (A); Bang Khen Experimental Station, 4 Oct. 1958, Smitinand 5063 (BKF)].

Distribution.— Native to Indonesia (Sulawesi, Moluccas, Papua New Guinea, Irian Jaya (Papua Barat))

Ecology.— Occasionally cultivated as an ornamental.

REFERENCES

Wilmot-Dear, C. M. (1984).A revision of Mucuna (Leguminosae: Phaseoleae) in China and Japan. Kew Bulletin 39: 23–65.

________. (1991) M. hainanensis Hay. ssp. multilamellata Wilmot-Dear: a new name for a long-known taxon, and key to related spp. Kew Bulletin 46: 205–212.

________. (1992).A revision of Mucuna (Leguminosae: Phaseoleae) in Thailand, Indochina and the Malay Peninsula. Kew Bulletin 47: 203–245.

________. (1993). A new species of Mucuna (Leguminosae: Phaseoleae) from Thailand, and a revised key to the species in Thailand, Indochina and the Malay Peninsula. Kew Bulletin 48: 29–35.

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