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FOC | Family List | FOC Vol. 9 | Rosaceae | Pyracantha

6. Pyracantha inermis Vidal, Notul. Syst. (Paris). 13: 301. 1948.

澜沧火棘 lan cang huo ji

Pyracantha mekongensis T. T. Yü.

Shrubs to 1 m tall, usually unarmed, with dense, short branches. Branches grayish brown, rusty tomentose distally when young, soon glabrescent. Leaves fasciculate on short branches; petioles 4–9 mm, glabrous; leaf blade oblong to oblong-obovate, 3–4.5 × 1–1.3 cm, both surfaces glabrous, midvein prominent abaxially, impressed adaxially, base cuneate, margin crenate, teeth incurved apically, apex acute. Corymb dense, terminal on short shoots, 2–3 cm diam., many flowered; peduncle rusty tomentose; bracts caducous, lanceolate. Pedicel 1–3 mm, stout, rusty tomentose. Flowers 8–10 mm in diam. Hypanthium campanulate, abaxially densely rusty tomentose. Sepals triangular. 1–1.2 mm, abaxially densely rusty tomentose, apex acute to acuminate. Petals ovate, apex rounded or emarginate. Stamens 20; filaments 2–3 mm. Ovary densely white tomentose; styles nearly as long as stamens. Pome purplish brown, subglobose, ca. 5 mm in diam.; fruiting pedicels densely shortly tomentose. Fl. May.

Sandy river banks; ca. 800 m. Yunnan [Laos].


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