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  Grevillea robusta
 
  Family: PROTEACEAE
  Citation:  Grevillea robusta Cunn. in R. Br., Prot. Nov. 24. 1810; Mohanan, Fl. Quilon Dist. 349. 1984; Ramach. & V.J. Nair, Fl. Cannanore Dist. 398. 1988; Vajr., Fl. Palghat Dist. 408. 1990; M. Mohanan & Henry, Fl. Thiruvanthapuram 398. 1994; Swarup. et al., Shola For. Kerala 65. 1998; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 705. 2009.
  Malayalam Name(s):
  Tamil name(s):
  English name(s): Silky oak, Silver oak
  Description: A handsomely straight evergreen tree, 10-25 m tall. Leaves 15-33 cm long; leaflets 7-19, 3-12 cm long, sessile, entire or pinnatifid, olive green above, silver grey silky hairy beneath; margin recurved. Racemes 5-15 cm long, appearing on the old wood, solitary, 2 or a few forming a panicle. Flowers solitary, in twos or threes; pedicel 1-1.5 cm long, glabrous, leaving a permanent white lenticular scar. Sepals 1.5-2 cm long, hooded, at first all fused together except on one side, later on fused in twos basally and apically, free for the greater length in the middle, these pairs in their turn free from each other or slightly fused above, orange yellow to orange or golden yellow to lemon yellow with dark red inner base. Stamens sessile; connective not produced beyond the anther cells; anthers about 1 mm long. Disc semi-annular. Gynophore about 2-3 mm long. Ovary glabrous; style lemon yellow, 1-2.5 cm long, dilated at the apex and bearing a greenish-yellow 1 mm long stigmatic cone. Follicle 2-seeded, 1.5-2.cm long, about 1 cm broad, silver grey to olive green, dehiscent. Seeds 1-1.5 cm long, 0.5-1 cm broad, broadly winged, thin, ovate, non-endospermic.
  Habit: Tree
  Flowering & Fruiting: June-September
  District(s): All Districts
  Medicinal:
  Habitat: Grown as shade tree
  Distribution: Native of East Australia; now common in tropics and subtropics
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Yellow, Orange
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: Yes
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Altitude:
  Localities:
   
 
   
 
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