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FOC | Family List | FOC Vol. 12 | Theaceae | Adinandra

12. Adinandra formosana Hayata, J. Coll. Sci. Imp. Univ. Tokyo. 22: 45. 1906.

台湾杨桐 tai wan yang tong

Shrubs or small trees. Young branches grayish brown, glabrous; current year branchlets reddish brown, grayish brown pubescent; terminal buds pubescent. Petiole 3-7 mm, pubescent or glabrescent; leaf blade ovate-oblong, obovate-oblong, oblong, or elliptic, (4-)5-9 × (2-)2.5-3.5 cm, thinly leathery, abaxially pale green and sparsely pubescent or glabrescent, adaxially shiny green and glabrous, secondary veins 10-12 on each side of midvein and visible on both surfaces, base cuneate, margin basally entire and apically serrulate, apex shortly acuminate, acute, or obtuse. Flowers axillary, solitary. Pedicel (1.5-)2.5-3.5 cm, slender, slightly recurved; bracteoles ovate-lanceolate, lanceolate, or linear, (2-)4-5 × (1-)2(-3) mm, outside sparsely pubescent to subglabrous. Sepals ovate to ovate-lanceolate, 7-9 × 3-5 mm, outside sparsely pubescent to subglabrous, margin glandular, apex acute. Petals white, oblong-ovate, 7-10 × 4-6 mm, outside glabrous, apex acute. Stamens 20-25, 6-7 mm; filaments 2-3 mm, glabrous; anthers linear-lanceolate, 2-2.5 mm, with filiform trichomes, connective exserted. Ovary pubescent, 3-loculed with many ovules per locule; style 4-5 mm, completely united, glabrous. Fruit globose, 7-8 mm in diam., many seeded, sparsely pubescent. Seeds brown, shiny. Fl. Apr-Jun, fr. Aug-Sep.

● Forests, thickets; 200-1900 m. Taiwan.

1 Leaf blade apex acute, acuminate, or shortly caudate; bracteoles ovate- lanceolate to obovate-lanceolate, 2-3 mm wide.   12a var. formosana
+ Leaf blade apex obtuse to shortly acute; bracteoles linear, ca. 1 mm wide.   12b var. obtusissima


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