特徵描述
作者
YANG, Yuen-Po
型態特徵
Herbs, monoecious or dioecious, submersed in fresh, brackish or salt water. Rhizomes creeping. Leaves linear, with a conspicuous midrib, alternate or opposite, or crowded at nodes, sheathing at base. Flowers unisexual, solitary, axillary, or 2-4 in cymes. Perianth segments of a few scales or absent. Staminate flowers with 1 (2 or 3) stamens; anthers 2-celled, longitudinally dehiscent; filaments slender. Pistillate flowers sessile, carpels 1-several, free; style simple, stigma capitate; ovule solitary, pendulous. Fruiting carpels sessile or stipitate, indehiscent. Seeds pendulous, endosperm absent.
屬
Six genera with ca. 25 species, cosmopolitan, mainly tropical; two genera in Taiwan.
參考文獻
Halodule 二葯藻屬
作者
YANG, Yuen-Po
型態特徵
Dioecious submersed marine herbs. Rhizomes creeping, branched, rooting at nodes, with a short erect stem bearing leaves. Scales 2, ovate or ellipsoid. Leaves narrowly linear, flattened, with a conspicuous midrib, toothed at apex. Sheaths compressed, auricled, ligulate, usually persistent. Flowers solitary, terminal. Staminate flowers pedunculate, consisting of unequally inserted anthers. Pistillate flowers subsessile; carpels 2, each with an entire style. Fruit globose to ovoid, subcompressed, 1-seeded.
