Botanical Survey of India | Flora of India

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Ailanthus integrifolia Lam. subsp. calycina (Pierre) Nooteb. in Steenis Fl. Males. ser. I. 6: 218. 1962. Pongelion calycinum Pierre, Fl. Forest Cochin. 4: t. 294 A(text). 1893. Ailanthus calycina Pierre l.c. (plate). A. grandis Prain in Indian Forester 28: 131, t. 210. 1902; Kanj. et al., Fl. Assam 1: 216. 1936.

Asm.: Actaluca, Borpat, Borkesutu, Saragphula, Koronga, Ring; Kh.: Diang-ehao; Lep.: Maldilkung.

Lofty trees, 30 - 50 m high; bark grey. Leaves alternate, 60 - 100 cm long, paripinnate; petioles 5 - 20 cm long; leaflets alternate, ovate-lanceolate or ovate, oblique, cuneate at base, acuminate at apex, entire or rarely sinuate along margins, 6 - 20 x 3 - 9.5 cm, glabrous; lateral nerves 10 - 12 pairs, 1 or 2 pairs with glands. Flowers in loosely branched, 30 - 40 cm long panicles; pedicels ca 5 mm long. Calyx irregularly lobed; lobes 3-angular, pubescent. Petals ca 4 mm long, densely hairy along margins and laxly hairy outside in male flowers. Anthers ca 2 mm long in male flowers. Ovary hairy; styles 5, connate; stigma spreading. Samaras apically twisted, rounded along outer margin, straight along inner margin, 10 - 13 x 3 - 4 cm, light brown; seeds flat, ca 1.5 cm across.

Fl. & Fr. Jan. - April.

Distrib. India: W. Bengal, Sikkim, Arunachal Pradesh, Assam, Nagaland, Mizoram, Tripura, Meghalaya.

Cambodia, Laos, Thailand, Vietnam and Indonesia(Java).

Uses. Wood is used for making packing cases.

Notes. A. integrifolia subsp. integrifolia differs from subsp. calycina in having larger flowers, up to 15 mm long, pedicels 2 - 3 mm long, sepals 6 - 10 mm long and petals which are evenly hairy outside. However, they cannot be distinguished in vegetative or fruiting condition.


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