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  Calamus rotang
  Citation:  Calamus rotang L., Sp. Pl. 325. 1753; Hook. f., Fl. Brit. India 6: 447. 1892; Gamble, Fl. Pres. Madras 1568(1094). 1931; Mohanan, Fl. Quilon Dist. 427. 1984; Subram., Fl. Thenmala Div. 405. 1995; Renuka, Palms Kerala 31. 1999; Anil Kumar et al., Fl. Pathanamthitta 519. 2005; Sunil & Sivadasan, Fl. Alappuzha Dist. 714. 2009.
  Malayalam Name(s): Arichural, Chooral
  Tamil name(s):
  English name(s): Common rattan, Rattan
  Description: Clustering canes, stem to 10 m long, with sheaths to 1.3 cm in diameter, without sheaths to 1 cm, internodes to 45 cm long. Leaf to 80 cm, ecirrate; sheath green, spiny, spines to 1 cm long, needle-like, yellow; knee prominent; flagellum to 2.5 m long; petiole absent; rachis spiny; spines to 1 cm long, yellow with black tip; leaflets 35 x 2 cm, regular, long acuminate, tip armed with bristles, margins spinulose, median vein ciliate beneath from centre upwards. Inflorescence to 3 cm long; primary sheath closely sheathing, armed with minute spines; partial inflorescences 4-5, to 70 cm long; secondary sheaths 2.5 cm long, tapering at the base and expanding into a cup at the upper region; male rachillae to 3 cm long, recurved, female rachillae to 8 cm long. Involucrophorum not stalked; involucre cup shaped. Fruit ovoid, scales in 21 rows, straw yellow; faintly channeled along the middle, endosperm not smooth.
  Habit: Climber
  Flowering & Fruiting: October-May
  District(s): Idukki, Kollam, Pathanamthitta, Palakkad, Alappuzha, Ernakulam
  Habitat: In sacred groves near coastal regions and backwaters
  Distribution: Western Ghats and Sri Lanka
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Creamy, Yellow
  Weed: No
  Monocot/Dicot: Monocotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Localities: Asram compound, Asram compound, Adoor, Kottungal kavu, Silent Valley R. F., Pooyamkutty
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