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Pakistan | Family List | Sterculiaceae | Pterygota

Pterygota alata (Roxb.) R.Br. in Benn.,Pl.Jav.Rar. 234. 1844. McCann in 100 Beaut. Tr. Ind. ed.2. 77.1959; Kochumenn in Whitmore, l.c.; S. Abedin, in Pak. J.Bot. 6(1):44.1974.

Vern.: Bandha Narikella.

  • Erythropsis roxburghiana Schoott & Endl.
  • Sterculia alata Roxb.

    A tall tree. Young parts with ferruginous pubescence. Leaves with 3-10 cm long petiole, crowded towards the ends of branches; lamina broadly ovate-cordate, 10-25 cm long, 7-15 cm broad, undulate, glabrous, acute or shortly acuminate. Raceme small, few-flowered. Flowers 1-1.5 cm across, pedicel 2-3 mm long. Sepals (4-)5(-7), nearly free, linear-lanceolate or elliptic, 1.2-1.5 cm long, 3-4 mm broad, fleshy, somewhat cucullate, densely ferruginous pubescent outside, sparsely pubescent and purple with red streaks within (seen in fresh material only). Anthers in male flowers united into 1-2 mm broad head on 4-6 mm long staminal column; in bisexual flowers sessile anthers are arranged in clusters of 4 or 5 in the sinuses formed by the carpels. Carpels 5;ovaries sessile, 2-3 mm long, pubescent; style recurved. Follicles large, woody, 7-12 cm in diameter, obliquely globose. Seeds c. 40 per follicle, oblong, compressed, in 2 rows, winged.

    Fl.Per.: February-March.

    Type: Described from Coromandal, India.

    Distribution: A native of south west India, Sikkim, Assam, Andamans, Burma and Bangla Desh (Chittagong, Sylhet); cultivated in gardens in Pakistan.

    It is a handsome tree planted for shade in gardens and along roadside. Seeds are said to be edible and in Sylhet these are used as a substitute for opium.


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