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Pterospermum rubiginosum
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Family:
STERCULIACEAE
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Citation: Pterospermum rubiginosum Heyne ex Wight & Arn., Prodr. 68. 1834; Hook. f., Fl. Brit. India 1: 368. 1874; Gamble, Fl. Pres. Madras 109(78). 1915; Mohanan, Fl. Quilon Dist. 94. 1984; Vajr., Fl. Palghat Dist. 90. 1990; Chandra in B.D. Sharma & Sanjappa, Fl. India 3: 451. 1993; Sasidh. & Sivar., Fl. Pl. Thrissur For. 69. 1996; Sasidh., Fl. Shenduruny WLS 43. 1997; Sasidh., Fl. Periyar Tiger Reserve 37. 1998; Sasidh., Fl. Parambikulam WLS 34. 2002; Mohanan & Sivad., Fl. Agasthyamala 110. 2002; V. Chithra in P. Daniel, Fl. Kerala 1: 467. 2005; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 165. 2009.
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Malayalam Name(s):
Chittilaplavu, Ellooti, Malamthodali
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Tamil name(s):
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English name(s):
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Description:
Evergreen trees, to 20 m high, bark 5-6 mm thick, brown, flaking off in thin rectangular strips; branchlets tawny pubescent; branches drooping. Leaves simple, alternate, 4-8.5 x 2-3 cm, ovate or ovate-lanceolate or elliptic-ovate, apex acuminate, base oblique, margin entire, glabrous above and densely white tomentose beneath, coriaceous; 3-5-ribbed from base, palmate, lateral nerves 4-6 pairs, pinnate, prominent, intercostae scalariform, slender, prominent; petiole 4-6 mm long, stout, pubescent; stipules lateral, filiform, oblique, densely pubescent, cauducous. Flowers bisexual, white, solitary, axillary. Calyx tubular, cylindric, brown-hoary outside, splitting into 5 linear lobes, white silky within. Petals 5, white, linear-oblong, slightly smaller than sepals. Staminal column adnate to the gynophore, bearing 5 groups of 3 stamens each between the staminodes, minutely tubercled towards tip. Ovary superior, cylindric, ridged, tomentose, within the apex of the column, 5-celled, ovules many in each cell; style hairy at base; stigma simple. Fruit a capsule, 40-50 x 6-9 mm, subclavate, acutely 5-angled, brown; seeds winged at one end.
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Habit:
Tree
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Flowering & Fruiting:
November-April
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District(s):
Palakkad, Kollam, Idukki, Thiruvananthapuram, Thrissur, Wayanad, Kozhikkode, Kannur
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Medicinal:
Yes
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Habitat:
Evergreen and semi-evergreen forests
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Distribution:
Southern Western Ghats
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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):
White
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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:
Southern Western Ghats
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IUCN status:
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Altitude:
500-700
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Localities:
Chimmini, Kallar, Koruthode, Nadugani ghats, Kothala, Mukkali forests, Karamanayar region
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