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Lasianthus obovatus
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Family:
RUBIACEAE
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Citation: Lasianthus obovatus Bedd., Ic. t. 10. 1868-1874; Hook. f., Fl. Brit. India 3: 186. 1880; Gamble, Fl. Pres. Madras 647(456). 1921; Deb & Gangop., Journ. Econ. Tax. Bot. 15: 293. 1991; Pradeep, Fl. Vellarimala 78. 2000; Gopalan & Henry, Endemic Pl. Agasthiyamala 297. 2000; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 427. 2009.
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Malayalam Name(s):
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Tamil name(s):
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English name(s):
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Description:
Shrubs dichotomously branching, branchlets quandrangular when young, terete in age, glabrous, internodes short. Leaves opposite, 2.5-5 x 1.5-2 cm, obovate mucronate, obtuse or retuse at apex, cuneate at base, incurved at margin, coriaceous, glabrous, greenish brown when dry; midrib channelled above, flattened beneath; lateral nerves 5-6 pairs, subparallel, arcuate, slender, reticulation inconspicuous; petioles 5-10 mm long, slender, glabrous; stipules 4-6 x 2-3 mm, ovate, acute, glabrous above. Cymes axillary, sessile. Flowers 7-8 mm long, sessile, 3-4 merous. Hypanthium 1 mm long, obovoid, puberulous; calyx tube 1-1.5 x 1.5-2 mm, puberulous or glabrous above; lobes 1.5-2 mm long, broad ovate-oblong, acute at apex, puberulous or glabrous beneath. Corolla tube 4-5 mm long, glabrous above, villous at throat within; tube 1.5-2 mm long, ovate, puberulous beneath. Stamens inserted; filament adnate below throat, 0.5 mm long; anthers 0.5-1 mm long, oblong. Ovary 0.5 mm long, obovoid, 3 or 4 loculed; style 4-5 mm long, slender, glabrous or finely puberulous above; stigma 3-4 lobed, 0.5 mm long, ovate, obtuse; glabrous; disk 1 mm across, subglobose, smooth. Fruit sessile, ± 5 x 4 mm, ovoid, crowned with persistent calyx lobes, 4 shallow channelled; pericarp thin, glabrous; mesocarp thick; pyrenes 4 or 3, planoconvex, wrinkled, thick walled; seeds 4 mm long, planoconvex.
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Habit:
Shrub
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Flowering & Fruiting:
January-May
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District(s):
Kozhikkode, Thiruvananthapuram, Wayanad
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Medicinal:
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Habitat:
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):
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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:
Endangered (EN)
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Altitude:
700-1200
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Localities:
Vellarimala
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