Elaeagnus 胡頹子屬

作者

LU, SHENG YOU and YANG, YUEN PO

型態特徵

Shrubs or trees with silvery or brown scales. Leaves alternate or opposite, entire, estipulate. Flowers regular, unisexual or bisexual, axillary, solitary or in fascicles or cymes or racemes, white or yellow; perianth in the bisexual and female flowers tubular, 2–6-cleft, in the male of Hippophae of 2 membra-naceous sepals; stamens adnate to the perianth-tube, in male flowers twice as many as the lobes, in the bisexual flowers as many as the lobes and alternate with them; ovary free, 1 celled; style filiform, the stigma lateral; ovule 1, basal, erect, ana-tropous. Fruit indehiscent, enclosed in the perianth-tube; seeds ascending; endosperm lacking or scanty; embyro straight, axile; cotyledons thick.

屬

Genera 3, in the north temperate and tropical regions; one in Taiwan.

參考文獻

LU, SHENG YOU and YANG, YUEN PO, Flora of Taiwan, second edition 3: 780. . (Fl. Taiwan 2nd edit.)

Elaeagnus 胡頹子屬

作者

LU, SHENG YOU and YANG, YUEN PO

型態特徵

Shrubs or small trees deciduous or evergreen, somtimes spiny, covered with silvery or brownish peltate scales. Leaves alternate, petiolate, entire, estipulate. Inflorescence fasciculate or racemose or umbellate-racemose, or a solitary flower. Flowers regular, bisexual; perianth united at lower part, the tube campanulate or cupulate or funnel-like, 4-lobed, the lobes deciduous, white or yellow inside; stamens 4, the filaments short, inserted near the mouth of perianth-tube, alternate with the lobes; ovary 1-locular, 1-ovulate, the style linear, the stigma lateral. Fruit indehiscent, globose to elliptic. Seeds usually ribbed, with a large straight embryo.

Species around 40 in southern Europe, Asia and North America.