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  Senna siamea
 
  Family: FABACEAE/LEGUMINOSAE (Subfam.: Caesalpinioideae)
  Citation:  Senna siamea (Lam.) Irwin & Barneby, Mem. NY. Bot. Gard. 35: 98. 1982; V. Singh, Monogr. Indian Subtribe Cassiinae 193. 2001; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 331. 2009. Cassia siamea Lam., Encycl. 1: 648. 1785; Hook. f., Fl. Brit. India 2: 264. 1878; Gamble, Fl. Pres. Madras 402(285). 1919; Manilal & Sivar., Fl. Calicut 97. 1982; Mohanan, Fl. Quilon Dist. 162. 1984; Antony, Syst. Stud. Fl. Kottayam Dist. 145. 1989; Sanjappa, Legumes Ind. 20. 1992; Sasidh. & Sivar., Fl. Pl. Thrissur For. 164. 1996; Sivar. & Mathew, Fl. Nilambur 235. 1997; Anil Kumar et al., Fl. Pathanamthitta 199. 2005; Sunil & Sivadasan, Fl. Alappuzha Dist. 258. 2009. Cassia florida Vahl, Symb. Bot. 3: 57. 1794.
  Malayalam Name(s): Manjakonna
  Tamil name(s):
  English name(s): Ironwood tree, Siamese senna
  Description: Trees, to 12 m high; young parts puberulent. Leaves paripinnate, alternate; stipules small, subulate, cauducous; rachis 30-35 cm long, slender, pubescent, grooved above, pulvinate; leaflets 18-30, opposite, estipellate; petiolule 3-4 mm, slender, pubescent; lamina 4-7 × 1.8-2.8 cm, oblong, elliptic-oblong or ovate-oblong, base obtuse or round, apex obtuse, mucronate or retuse, margin entire, glabrous above, glabrous or minutely pubescent and glaucous beneath; lateral nerves 6-10 pairs, pinnate, faint, intercostae reticulate, obscure. Flowers 2.5-3.5 cm long, bisexual, yellow, in terminal or axillary corymbose recemose panicles; bracts linear, curved; sepals 5, 5-7 mm long, suborbicular, subequal, greenish-yellow, puberulent; petals 5, 1.5×0.8 cm, ovate-elliptic, subequal, clawed; stamens 10,upper 3 staminodes small, antheriferous ones 7, lower2 large, curved, one medium; ovary half inferior, sessile, pubescent, deeply grooved, ovules many. Fruit a pod, 20-25×1-1.5 cm, long stipitate, strap-shaped, compressed woody with thick sutures; seeds 20-30, longitudinal.
  Habit: Tree
  Flowering & Fruiting: October-March
  District(s): All Districts
  Medicinal:
  Habitat: Planted as ornamental tree
  Distribution: Native of South East Asia; now widely cultivated
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Yellow
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: Yes
  Garden: Yes
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Altitude:
  Localities: Angamoozhy, Purakkad, Nedumkayam, Vadapuram
   
 
   
 
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