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Pterospermum diversifolium
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Family:
STERCULIACEAE
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Citation: Pterospermum diversifolium Blume, Bijdr. 88. 1825; Hook. f., Fl. Brit. India 1: 367. 1874; Gamble, Fl. Pres. Madras 108(78). 1915; Mohanan, Fl. Quilon Dist. 94. 1984; Ramach. & V.J. Nair, Fl. Cannanore Dist. 68. 1988; Antony, Syst. Stud. Fl. Kottayam Dist. 81. 1989; Vajr., Fl. Palghat Dist. 90. 1990; Chandra in B.D. Sharma & Sanjappa, Fl. India 3: 449. 1993; M. Mohanan & Henry, Fl. Thiruvanthapuram 87. 1994; Sasidh. & Sivar., Fl. Pl. Thrissur For. 67. 1996; Sivar. & Mathew, Fl. Nilambur 101. 1997; Sasidh., Fl. Shenduruny WLS 43. 1997; Sasidh., Fl. Periyar Tiger Reserve 37. 1998; Anil Kumar et al., Fl. Pathanamthitta 95. 2005; V. Chithra in P. Daniel, Fl. Kerala 1: 465. 2005; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 164. 2009.
Pterospermum glabrescens Wight & Arn., Prodr. 69. 1834.
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Malayalam Name(s):
Pambaram
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Tamil name(s):
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English name(s):
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Description:
Trees, to 18 m high, bark 4-5 mm thick, surface brown mottled with green and white, fibrous; branches horizontal. Leaves simple, alternate, distichous, 15-30 x 12.5-25 cm, rectangular-oblong or oblong or rarely panduriform, apex acuminate, base cordate or truncate, very variable in young plants and coppice shoots, margin entire, glabrous above, silvery pubescent beneath, coriaceous; nerves 5-7 from base, palmate, prominent, lateral nerves 5-9 pairs, pinnate, prominent, intercostae scalariform, prominent; petiole 10-17 mm long, stout, furfuraceous; stipules lateral, 7 x 4 mm, cauducous. Flowers bisexual, white, axillary, solitary or geminate. Cayx tubular, rusty tomentose out side, grey-pubescent within 5-fid; lobes 10-13 x 0.5-1 cm, linear-lanceolate, furfuraceous. Petals 5, oblong, white, deciduous. Staminal column adnate to the gynophore, bearing 5 groups of 3 stamens each between staminodes. Ovary superior, within the apex of column, 5-celled, ovules many; style entire. Fruit a capsule, 10-12.5 x 2-2.5 cm, oblong, 5-angled, smooth; seeds 8-11 in each cell, winged at one end.
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Habit:
Tree
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Flowering & Fruiting:
December-April
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District(s):
Kottayam, Kollam, Idukki, Pathanamthitta, Malappuram, Palakkad, Kannur, Thiruvananthapuram, Thrissur, Wayanad
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Medicinal:
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Habitat:
Evergreen and semi-evergreen forests
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Distribution:
Indo-Malesia
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Aquatic:
No
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
Creamy
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Weed:
No
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Monocot/Dicot:
Dicotyledonous Plants
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Exotic:
No
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
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IUCN status:
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Altitude:
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Localities:
Peechi, Elanad, Kattalappara, Pambavalley, Moozhiar, Panoth, Marapalam area, Nilambur
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