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  Humboldtia unijuga var. trijuga
  Family: FABACEAE/LEGUMINOSAE (Subfam.: Caesalpinioideae)
  Citation:  Humboldtia unijuga Bedd. var. trijuga Joseph & Chandras., Journ. Bombay Nat. Hist. Soc. 81: 729. 1984; Sanjappa, Legumes Ind. 30. 1992; Mohanan & Sivad., Fl. Agasthyamala 234. 2002. Humboldtia trijuga (Joseph & Chandras.) M. Mohanan, M. Mohanan & Henry, Fl. Thiruvanthapuram 169. 1994; Gopalan & Henry, Endemic Pl. Agasthiyamala 257. 2000.
  Malayalam Name(s):
  Tamil name(s):
  English name(s):
  Description: Trees, to15 m high; bark greyish-brown; branches slender, spreading; branchlets terete, nodes not constricted. Leaves paripinnate, alternate; stipules lateral, 3.2 x 1.1 cm, erect, united along the outer margin about half of its length, lanceolate, oblique at base, appendage absent; rachis 85 mm long, pulvinate, narrowly winged between leaflets, glabrous; leaflets 6 (rarely 4, 8 or 10), opposite, sessile or subsessile, estipellate; lamina 5.2-17.5 x 1.6-5 cm, lanceolate, oblanceolate, elliptic to oblong, base oblique, apex acuminate, margin entire, glabrous above and glabrescent beneath, coriaceous; lateral nerves 7-11 pairs, pinnate, prominent, looped at the margin forming prominent intramarginal nerve, intercostae reticulate, prominent. Flowers bisexual, bright pink, in fascicles or in very short racemes from tubercles of main trunk or axillary from leafy branchlets, not wide opening; pedicels upto 1.75 cm long, slender, pubescent; bracts ovate, pubescent, acute; bracteoles 2, free, obovate to oblong, pubescent, glabrous inside except at base and margin, concave, obtuse to subacute; calyx tube ca.5 mm long, lined by the disc; lobes 4, unequal, elliptic-oblong to obovate, glabrous outside, sparsely pubescent at base within, abruptly obtuse to subacute at tip, shortly clawed at base; stamens 5, exserted; filaments bright pink, glabrous except at base; anthers versatile; staminodes 5, minute, erect, glabrous and pinkish at base; disc densely pubescent; ovary half inferior, stipitate, 8 mm long, pubescent; style upto 1.8 cm long, glabrous above, pubescent at base; stigma capitate. Fruit a pod, 6-10.5 x 1-2.5 cm, oblong, oblique, puberulous, compressed with persistent stylar beak.
  Habit: Tree
  Flowering & Fruiting: December-March
  District(s): Thiruvananthapuram
  Habitat: Evergreen forests
  Distribution: Southern Western Ghats (Kerala)
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Red
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to: Kerala
  IUCN status: Critically Endangered (CR)
  Altitude: 600-1000
  Localities: Kovitherimalai near Bonnacourd estate, Karamanayar region, Attayar, Chemungi
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