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  Mitragyna tubulosa
 
  Family: RUBIACEAE
  Citation:  Mitragyna tubulosa (Arn.) Hav., J. Linn. Soc. Bot. 33: 71. 1897; Gamble, Fl. Pres. Madras 585(413). 1921; Manilal & Sivar., Fl. Calicut 133. 1982; Ansari, Fl. Kasaragod Div. 197. 1985; Antony, Syst. Stud. Fl. Kottayam Dist. 197. 1989; Babu, Fl. Malappuram Dist. 338. 1990; Vajr., Fl. Palghat Dist. 237. 1990; Subram., Fl. Thenmala Div. 184. 1995; Sasidh. & Sivar., Fl. Pl. Thrissur For. 227. 1996; Sasidh., Fl. Shenduruny WLS 159. 1997; Sivar. & Mathew, Fl. Nilambur 336. 1997; Sasidh., Fl. Parambikulam WLS 154. 2002; Mohanan & Sivad., Fl. Agasthyamala 331. 2002; Anil Kumar et al., Fl. Pathanamthitta 257. 2005; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 429. 2009. Nauclea tubulosa Arn. in Thw., Enum. Pl. Zeyl. 137. 1859. Stephegyne tubulosa (Arn.) Hook.f. ex Bedd., Fl. Sylv. t.29. f.1. 1869; Hook. f., Fl. Brit. India 3: 25. 1880.
  Malayalam Name(s): Malamthumba, Naikadambu, Rosekadambu
  Tamil name(s):
  English name(s):
  Description: Deciduous trees, to 15 m high, bark 20-25 mm thick, greyish-green, smooth; branches horizontal. Leaves simple, opposite, decussate, 10-20 x 3.5-12.5 cm, ovate, elliptic, elliptic-ovate or ovate-oblong, apex acute to acuminate, base truncate, obtuse or attenuate, margin entire, glabrous, coriaceous; stipules 8 mm long, interpetiolar, 0.8 cm long, oblong, obtuse; petiole 10-30 mm long, slender, glabrous; lateral nerves 7-12 pairs, pinnate, slender, prominent beneath; intercostae scalariform, very slender; domatia absent. Flower bisexual, purplish-pink, 10-12 mm long, in terminal heads; bracts 2, leafy, on the peduncle; receptacle hirsute; bracteoles many, paleaceous, ciliate on margin. Calyx tube truncate, elongate, obconic, glabrous. Corolla tube funnel shaped, lobes 5, reflexed. Stamens 5, attached at the throat of corolla tube, filaments short; anthers oblong, apiculate. Ovary 2-celled, inferior, ovules many; style filiform; stigma mitriform, hollow at base. Fruit a capsule, ovoid, ribbed, yellowish-brown, in globose heads ca. 2 cm across; seeds many, minute, winged.
  Habit: Tree
  Flowering & Fruiting: April-May
  District(s): Palakkad, Kottayam, Idukki, Kasaragode, Pathanamthitta, Malappuram, Thiruvananthapuram, Kollam, Kozhikkode, Thrissur, Wayanad, Kannur
  Medicinal:
  Habitat: Semi-evergreen forests
  Distribution: Peninsular India
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Yellow, Violet
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to: Peninsular India
  IUCN status:
  Altitude: 400-800
  Localities: Peechi, Choodal, Kattalappara, Vengoli, Ranni, Taliparamba, Neriamangalam, Thiruvizhamkunnu, Vadapuram, Kulathupuzha, Bonaccord
   
 
   
 
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