Polygala arillata

Polygala arillata Buchanan-Hamilton ex D. Don

Languages: English

Overview

General Description

Shrubs or small trees, 1-5 m tall. Branchlets sometimes weakly ridged, densely pubescent; terminal buds densely yellow-brown felted-hairy. Petiole ca. 1 cm, pubescent; leaf blade green, elliptic or oblong-elliptic to oblong-lanceolate, 6.5-14 cm long, 2-2.5 cm wide, papery, both surfaces sparsely pubescent especially on veins, glabrescent, midvein raised abaxially, depressed adaxially, lateral veins 5 or 6 pairs, anastomosing near margin, veinlets reticulate, evident, base cuneate or obtuse, margin entire, ciliate, apex acuminate. Racemes opposite to leaves, drooping, densely pubescent, 7-10 cm, to 25 (-30) cm at fruiting. Pedicel ca. 3 mm, pubescent; bract 1, basal, triangular-acuminate. Flowers 1.3-2 cm. Sepals 5, unequal, ciliate, caducous after anthesis; outer sepals 3, small, upper one deeply cucullate, 8-9 mm, lateral sepals ovate, ca. 5 mm long, 3 mm wide, apex rounded; inner sepals 2, red-purple, petaloid, oblong-obovate, 1.5-1.8 cm, nearly at right angle between them and petals. Petals 3, connate in lower 2/3, yellow, slightly fleshy; keel longer than lateral petals, apex with multifid appendages. Stamens 8; filaments ca. 1.4 cm, lower 2/3 united, forming an open staminal sheath, adnate with petals; anthers ovoid. Disk fleshy. Ovary compressed globose, ca. 3 mm in diameter, narrowly winged, ciliate; style 8-12 mm, curved toward apex, apex 2-lobed; stigma on lower lobes. Capsule purple-red at maturity, baccate, broadly reniform or slightly cordate, ca. 1 cm, ca. 1.3 cm in diameter, margin winged, ciliate, apex emarginate, mucronate; carpels with concentric circles costate. Seeds brown-red to black, globose, ca. 4 mm in diameter, very sparsely pubescent, truncate at hiliferous end, shiny, with large helmet-shaped, somewhat irregular, projecting strophiole.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Ecology and Distribution

Cyclicity

Flowering from May to October; fruiting from June to November.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Distribution

Polygala arillata is occurring in Anhui, Fujian, Guangxi, Guizhou, Henan, Hubei, Jiangxi, S Shaanxi, Sichuan, Xizang, Yunnan, Zhejiang of China, Bhutan, Cambodia, India (Darjeeling, Sikkim), Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Habitat

Growing in forests, forest margins on mountain slopes; 900-2800 m.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Taxonomy

  • Polygala arillata var. ovata Gagnepain (synonym)