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FOC | Family List | FOC Vol. 13 | Nyssaceae | Nyssa

4. Nyssa shweliensis (W. W. Smith) Airy-Shaw, Kew Bull. 23: 311. 1969.

瑞丽蓝果树 rui li lan guo shu

Alangium shweliense W. W. Smith, Notes Roy. Bot. Gard. Edinburgh 13: 152. 1921.

Trees to 15 m high. Young twigs light purple, densely pilose, becoming dark brown and glabrous when old. Petiole 2.5-4 cm, pilose; leaf blade ovate to ovate-oblong, 9-14 × 5.5-8 cm, papery, abaxially densely pilose at veins, adaxially sparsely stiffly hairy, midvein and 7-9 pairs of lateral veins more conspicuous abaxially, base subrounded, margin slightly sinuate, apex acuminate. Staminate flowers in dense racemes or small umbels; peduncle 2.5-3 cm, densely pilose; bract solitary, ovate, ca. 1 cm; disk plateform, pilose. Pedicel 7-8 mm, slender, pilose. Calyx lobes 5, ovate or triangular, outside pilose. Petals 5, sublanceolate, ca. 3 × 1 mm. Stamens 10, in 2 series, unequal, 2-4 mm, sparsely pilose at base. Female flowers not seen. Drupe ovoid or oblong, ca. 1.3 cm, 6-7 mm in diam.; calyx lobes and disk persistent; petiole 3-6 mm; exocarp mealy, endocarp woody, 1-seeded. Fl. Apr-May, fr. Sep.

● Sparse forests; 1700-2700 m. W Yunnan [?Vietnam].

Nyssa shweliensis is possibly only a small-fruited variant of N. wenshanensis.


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