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FOC | Family List | FOC Vol. 12 | Elaeocarpaceae | Elaeocarpus

23. Elaeocarpus lacunosus Wallich ex Kurz, Forest Fl. Burma. 1: 168. 1877.

多沟杜英 duo gou du ying

Elaeocarpus borealiyunnanensis Hung T. Chang.

Trees to 20 m tall. Two-year-old branches with dense whitish or yellowish white lenticels, glabrous. Branchlets puberulent. Petiole yellow-brown, 0.7-1.5 cm, not swollen at ends, puberulent; leaf blade brown, oblong-oblanceolate or oblong to elliptic, 8-17 × 4-7 cm, thinly leathery, abaxially glabrous or puberulent only on midvein, adaxially glabrous, lateral veins 7 or 8 per side, conspicuous on both surfaces, veinlets conspicuous abaxially, inconspicuous adaxially, base cuneate or obtuse, margin minutely crenate or serrate, apex acuminate or slightly acute. Raceme 5-12 cm, multi-flowered; peduncle puberulent. Pedicel 4-6 mm, slender, brown puberulent, without persistent bracteoles. Flowers bisexual; buds 4-5 mm, narrowly ovoid. Sepals 5, lanceolate, 4-5 mm, both surfaces puberulent. Petals 5, obovate, slightly longer than sepals, abaxially glabrous, adaxially pubescent at base, margin ciliate, laciniate in upper 1/2; segments 20-25. Stamens 30-40; filaments fascicled, glabrous; anthers not awned but pubescent at apices. Disk 5-lobed, completely separated, densely tomentose. Ovary 3-loculed, densely tomentose; style glabrous in upper 1/2; ovules 2 per locule. Drupe ovoid, ca. 3.5 × 2-3 cm; exocarp obscure, glabrous; endocarp bony, ca. 4 mm thick, lacunose. Fl. Apr-May, fr. May-Jun.

Forests; 1400-2600 m. W Yunnan [Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].

One of us (Chamlong Phengklai) prefers to treat this as a synonym of Elaeocarpus lanceifolius.


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