Botanical Survey of India | Flora of India

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Trees or shrubs. Leaves glabrous or pubescent with simple hairs. Flowers bisexual, solitary or few together, axillary, pubescent, pedicellate. Sepals 3, valvate. Petals 6 (3 + 3), valvate, subequal, variously shaped, flat, spreading. Stamens numerous, cuneate; connectives produced. Carpels indefinite, oblong, cylindrical or angled, with 1 or 2 ovules, sometimes up to 5, basal or subbasal; styles almost absent. Ripe carpels few to many, berries, stalked, rarely subsessile. Seeds 1 - 5.

Africa, India, Sri Lanka, Bangladesh, Myanmar, Indo-china, Malesia, Australia and New Zealand; 120 species, 14 species in India.



KEY TO THE SPECIES


1a. Petals up to 1.5 cm long 2
b. Petals more than 1.5 cm long 8
2a. Petals equal in 2 series 3
b. Petall unequal in 2 series, outer shorter than the inner 4
3a. Leaves oblong-lanceolate, pubescent beneath; flowers solitaty or 2 - 3 together; petals oblong-ovate, acute 2. Polyalthia cerasoides
b. Leaves oblong, glabrous and glaucous beneath; flowers many in dense fascicles on leafless branches; petals oblong, obtuse 11. Polyalthia parkinsonii
4a. pedicels up to 1 cm long; petals thick, fleshy 5
b. Pedicels 1.5 - 3 cm long; petals thickly coriaceous 6
5a. Bracts at the base of pedicels; all outer petals equal, ca 10 mm long, slightly smaller than inner ones; stigma capitate 4. Polyalthia crassa
b. Bracts at the middle of pcdicels; outer petals equal or unequal, ca 3 mm long or rarely one or two larger, ca 12 mm long; stigma discoid 10. Polyalthia meghalayensis
6a. Leaves obtuse; flowers extra-axillary 14. Polyalthia suberosa
b. Leaves acute to acuminate; flowers axillary 7
7a. Leaves elliptic-oblong, strongly reticulate-veined; petals oblong, pubescent outside 7. Polyalthia korintii
b. Leaves oblong-lanceolate, faintly reticulate-veined; petals oblong-ovate, brown tomentose outside 12. Polyalthia rufescens
8a. Petals 1 - 2 cm wide 9
b. Petals less than 1 cm wide, rarely up to 1.2 cm wide 10
9a. Leaves 10 - 20 cm long; flowers solitaty or rarely in pairs; ripe carpels linear-oblong, ca 1.5 cm long 6. Polyalthia Jenkinsii
b. Leaves 25 - 40 cm long; flowers in fascicles; ripe carpels ovoid-ellipsoid, 2.5 - 3.5 cm long 8. Polyalthia lateriflora
10a. Trees with conical crown; branches and leaves pendulous; leaf-margins strongly undulate; sepals 1 - 2 mm long; petals up to 2 mm wide 9. Polyalthia longifolia
b. Trees with subglobose crown; branches and leaves not pendulous; leaf-margins not or rarely slightly undulate; sepals 2 - 5 mm long; petals broader, 2 - 12 mm wide 11
11a. Petals strap-shaped, 10 - 12 mm wide; ripe carpels up to 1.2 cm long, often 2-seeded and constricted between seeds 1. Polyalthia cauliflora
b. Petals linear to oblong-lanceolate, up to 8 mm wide; ripe carpels 1.5 - 5 cm long, 1-seeded 12
12a. Leaves slightly undulate along margins; petals oblong-lanceolate, 5 - 8 mm wide; ripe carpels 2 - 3 cm long with up to 1.5 cm long stalks 3. Polyalthia coffeoides
b. Leaves not undulate along margins; petals linear-lanceolate, 2 - 4 mm wide; ripe carpels 2.5 - 5 cm long with 2 - 5 cm long stalks 13
13a. Flowers in peduncled or branched cymes; petals rufous-tomentose 5. Polyalthia fragrans
b. Flowers in sessile fascicles; petals puberulous 13. Polyalthia simiarum


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