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Grevillea robusta
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Family:
PROTEACEAE
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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.
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Malayalam Name(s):
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Tamil name(s):
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English name(s):
Silky oak, Silver oak
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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.
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Habit:
Tree
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Flowering & Fruiting:
June-September
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District(s):
All Districts
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Medicinal:
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Habitat:
Grown as shade tree
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Distribution:
Native of East Australia; now common in tropics and subtropics
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Aquatic:
No
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
Yellow, Orange
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Weed:
No
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Monocot/Dicot:
Dicotyledonous Plants
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Exotic:
Yes
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
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IUCN status:
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Altitude:
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Localities:
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