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

4. Stewartia obovata (Chun ex Hung T. Chang) J. Li & T. L. Ming, Acta Phytotax. Sin. 34: 57. 1996.

钝叶紫茎 dun ye zi jing

Hartia obovata Chun ex Hung T. Chang, Acta Sci. Nat. Univ. Sunyatseni 5(2): 24. 1959; H. multinerva S. Z. Yan.

Trees to 5 m tall, evergreen. Current year branchlets glabrous or puberulent. Petiole 1-1.5 cm, pubescent when young, wings 1.5-2 mm wide; leaf blade obovate to obovate-oblong, 7-12 × 3-4.5 cm, leathery, abaxially appressed pubescent when young but glabrescent and reddish brown glandular punctate, secondary veins 10-15 on each side of midvein, base asymmetrically slightly cordate, margin entire, apex obtuse to emarginate. Flowers solitary or to 4 in a short raceme, ca. 2.5 cm in diam. Pedicel 3-5 mm, pubescent; bracteoles 2, caducous, ovate to lanceolate, ca. 5 mm. Sepals obovate to suborbicular, 6-8 × 4-6 mm, outside grayish white appressed pubescent, apex rounded. Petals 5, white, broadly obovate to obovate, ca. 1.2 cm, basally slightly connate, margin serrate. Stamens numerous; filament whorls basally connate. Ovary glabrous. Capsule conic, 8-12 × 6-8 mm; pedicel ca. 5 mm. Fl. Jun-Jul, fr. Sep-Oct.

● Forests; 900-1300 m. SW Guangdong, N Guangxi.

The plants mistakenly treated as Hartia tonkinensis Merrill in FRPS (49(3): 228. 1998) belong here. This species, now Stewartia tonkinensis (Merrill) C. Y. Wu ex T. L. Ming, is endemic to Vietnam.


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