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(62) 尖苞帚菊
Pertya pungens Y. C. Tseng
菊科 [Asteraceae(Compositae)]
Status in China: Critically Endangered (CR)
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Description: Subshrubs, up to 1 m high; Stem and branches densely pubescent. Leaves alternate; petiole 3-5 mm; leaf blade ovate, 3-5.5 cm long and 2-4 cm wide, apex acute, base subtruncate, margin remotely dentate, 3-nerved, pilose on both surfaces. Flower-heads narrowly campanulate, 16-19 mm long, ca. 6 mm across, usually 2-4 in terminal clusters; peduncle 2-8 mm; involucral bracts ca. in 7 series, ribbed on abaxial surface, apex spiny. Flowers bisexual, all tubular, ca. 13 mm long; limb deeply 5-toothed. Achenes 8-ribbed, white pilose; pappus scabrous, 10-12 mm long, connate at base.
Distribution: Restricted to Ma On Shan. Discontinuously distributed in Hong Kong and Yang Chun County of Guangdong province.
Habitat and Ecology: On banks of streams and margins of forests. Flowering: Oct.-Nov.
It is a rare species with a fragmented distribution and small population size and is thus of botanical interest. In Hong Kong, the locality of its occurrence is within Ma On Shan Country Park under protection.
References:
程用謙， 1985：中國菊科帚菊屬資料。 廣西植物 5 (4): 334，圖 1：4。
程用謙， 1996：中國植物誌 79：16。科學出版社，北京。
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