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4. Cornus subg. Cornus
山茱萸亚属 shan zhu yu ya shu
Shrubs or small trees, deciduous. Flower buds terminal or axillary, ovoid-globose, pubescent with gray or brown appressed trichomes. Leaves opposite, petiolate; leaf blade ovate, elliptic, or ovate-lanceolate, papery, abaxially pubescent with appressed trichomes or sometimes tomentose, adaxially glabrous or nearly so. Inflorescences umbellate cymes, terminal or axillary, subtended by 4 decussate, scalelike bracts; bracts caducous after anthesis; outer pair of bracts larger than inner pair. Flowers precocious (flowering before leaves). Calyx tube cuplike, 4-dentate. Petals yellow, ovate-lanceolate. Filaments awn-shaped; anthers oblong, 2-loculed. Ovary 1- or 2-loculed; style cylindrical; stigma truncate. Fruit red or black, narrowly ellipsoid to oblong; stones narrowly ellipsoid, seeds 1 or 2.
Four species: E Asia, Europe, W North America; two species in China.
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Branches sympodial; inflorescences terminal; peduncle 2–3 mm; fruit 1.2–1.8 cm; abaxial leaf surface with
clusters of light brown trichomes in axils of lateral veins. |
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18 Cornus officinalis |
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Branches monopodial; inflorescences lateral; peduncle 5–12 mm; fruit smaller, 6–8(–10) mm; abaxial leaf
surface with clusters of grayish trichomes in axils of lateral veins. |
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19 Cornus chinensis |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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