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2. Ostryopsis Decaisne, Bull. Soc. Bot. France. 20: 155. 1873.
虎榛子属 hu zhen zi shu
Shrubs deciduous. Leaves alternate, petiolate, usually irregularly and doubly serrate or incised. Male inflorescence enclosed by buds during winter, subsessile, terminal or lateral, spicate-cymose, cylindric; bracts numerous, overlapping; each bract subtending 1 male flower; bracteoles absent; stamens 4-8, inserted at base of bracts; anthers with 2 connate thecae, without hairs at apex. Female inflorescence terminal or axillary, racemose-capitulate; bracts forming a tubular sheath, leathery, lobed at apex; flowers paired, enclosed by bracts. Nutlet ovoid-globose, with prominent ribs, completely enclosed by bracts.
* Two species: China.
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Leaves ovate or elliptic-ovate, densely white pubescent abaxially, margin doubly serrate and usually incised above middle, apex acuminate or acute; bracts of male and female flowers pubescent |
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1 Ostryopsis davidiana |
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Leaves broadly ovate or ovate-orbicular, densely yellow-brown tomentose abaxially, margin irregularly and doubly serrate, apex obtuse or rounded; bracts of male and female flowers yellow-brown tomentose |
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2 Ostryopsis nobilis |
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Lower Taxa
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