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  Hedyotis cyanantha
  Citation:  Hedyotis cyanantha Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 45: 136. 1876; Dutta & Deb, Taxonomic Revision Hedyotis 167. 2004; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 418. 2009. Hedyotis caerulea Wight & Arn., Prodr. 412. 1834, nom. illeg.; Hook. f., Fl. Brit. India 3: 60. 1880; Manilal & Sivar., Fl. Calicut 141. 1982; Ansari, Fl. Kasaragod Div. 191. 1985; Babu, Fl. Malappuram Dist. 329. 1990. Oldenlandia caerulea (Wight & Arn.) Gamble, Fl. Pres. Madras 597(421). 1921, nom. illeg.
  Malayalam Name(s):
  Tamil name(s):
  English name(s):
  Description: Erect annual herba, branching below; root-stock stout, branching; stem 6-18 cm long, stiff, terete, setaceous. Leaves simple, sessile, opposite or verticillate, 1-1.5 x 0.2 cm, linear, aristate at apex, coriaceous, punctate, rigid, revolute at margin, setaceous above and along midrib below; stipules 2-2.2 x 1-2 mm, white, membranous, with 3-4 bristles, 3-3.5 mm long. Inflorescence axillary or terminal capitate cymes with 3-4 flowers. Flowers sessile or shortly pedicelled, 4-5 mm long; pedicel up to 1 mm long, setaceous. Hypanthium globose, 0.7-1 mm long. Calyx limb 0.5-1 mm long, setaceous; lobes 4, 1-1.5 x 0.1-0.12 mm, triangular-lanceolate, aristate at apex. Corolla 3-4 mm long, blue; tube 1-1.5 mm long, glabrous inside; lobes 4, 2.5-3 x 1 mm, lanceolate to linear-lanceolate, 3 nerved, minute puberulous inside, incurved at apex. Stamens 4, exserted, longer than corolla lobes; filaments 3-3.5 mm long, attached near sinus of corolla lobes, ciliate at base; anthers oblong, 0.5-0.8 mm long. Ovary 0.5-0.8 mm long, ovules many; style slender, 4-5 mm long; stigma bifid, 0.5-1 mm long, linear, feathery. Capsules globose or ovoid, 2-4 x 1.5-2 mm, notched at apex, subcoriaceous, ribbed, punctate setaceous, with rigid calyx teeth, loculicidal on crown only; seeds 40-70, 0.1-0.15 mm, triangular, narrowly winged, reticulate, very often orbicular.
  Habit: Herb
  Flowering & Fruiting: October-June
  District(s): Kasaragode, Malappuram, Kozhikkode, Wayanad, Kannur
  Habitat: Lateritic slopes and grasslands
  Distribution: Peninsular India and Sri Lanka
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Blue
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Localities: Chandanathode, Bela, Taliparamba, Parassanikkadavu
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