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  Hymenodictyon obovatum
 
  Family: RUBIACEAE
  Citation:  Hymenodictyon obovatum Wall. in Roxb., Fl. Ind. 2: 153. 1824; Hook. f., Fl. Brit. India 3: 36. 1880; Gamble, Fl. Pres. Madras 589(416). 1921; Mohanan, Fl. Quilon Dist. 211. 1984; Manilal, Fl. Silent Valley 133. 1988; Vajr., Fl. Palghat Dist. 232. 1990; Subram., Fl. Thenmala Div. 184. 1995; Sasidh. & Sivar., Fl. Pl. Thrissur For. 223. 1996; Sasidh., Fl. Shenduruny WLS 153. 1997; Sasidh., Fl. Periyar Tiger Reserve 175. 1998; Mohanan & Sivad., Fl. Agasthyamala 320. 2002; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 419. 2009.
  Malayalam Name(s): Malamkalli
  Tamil name(s):
  English name(s):
  Description: Deciduous trees, to 15 m high, bark 6-7 mm thick, grey-black, rough, exfoliations small, brittle; blaze red; young parts pubescent. Leaves simple, opposite; stipules 3.7-5 cm, interpetiolar; petiole 2-12 cm, slender, glabrous, grooved above; lamina 4-24 cm x 2.5-10 cm, obovate, elliptic-obovate or elliptic, base attenuate, acute, oblique or subtruncate, apex acuminate, obtusely acuminate, margin entire, glabrous, pubescent below, chartaceous; lateral nerves 5-8 pairs, pinnate, prominent beneath; intercostae reticulate, prominent; domatia present. Flowers bisexual, white, subsessile, terminal racemes; bracts 2, leafy; bracteoles; calyx tube short, lobes 5, puberulous without, ovate, acute; corolla tube short, expanding in a campanulate bilobed limb, lobes 5, ovate, glabrous, valvate; stamens 5, inserted between the lobes; anthers lanceolate, sagitate; ovary 2-celled, inferior, ovules many; style slender, exserted; stigma fusiform. Fruit a capsule, 10-12 mm long, 2 valved, erect, ovoid, brown; seeds 5-6 mm long, narrowly winged.
  Habit: Tree
  Flowering & Fruiting: June-October
  District(s): Kollam, Idukki, Palakkad, Thiruvananthapuram, Thrissur, Wayanad, Kozhikkode
  Medicinal:
  Habitat: Semi-evergreen and moist deciduous forests
  Distribution: Western Ghats
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Creamy, Yellow, White
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to: Western Ghats
  IUCN status:
  Altitude: 400-750
  Localities: Peechi, Ponmudi, Kattalappara, Vallakkadavu, Chembotti, Ayyappankovil-Pothundy, Mukkali forests, Dhoni R. F., Thenmalai, Attayar
   
 
   
 
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