作者

PENG, Ching-I

型態特徵

Seasonally dormant or rarely semi evergreen perennial herbs, tubers usually depressed-globose, sometimes irregularly cylindric, napiform, rhizomatous or stoloniferous. Leaves usually solitary (rarely 2 or 3). Petioles long, usually smooth, spotted and marked in a variety of patterns, with very short sheath. Blade trisect, primary divisions pinnatisect, bipinnatisect or dichotomously further divided, ultimate lobes oblong-elliptic to linear, acuminate, decurrent, rarely petioluate. Inflorescence solitary, preceded by cataphylls, usually flowering without leaves. Peduncle similar to petiole. Spathe variously colored, marcescent and finally deciduous, boat-shaped and not or hardly convolute, or clearly differentiated into tube and blade, sometimes constricted between them; tube usually convolute. Spadix sessile or stipitate, shorter or much longer than spathe; male zone cylindric, ellipsoid, conoid or obconoid, usually contiguous with female, sometimes separated by a sterile zone which may be naked, or bearing prismatic, subglobose or hair-like sterile flowers; terminal appendix variable in shape. Flowers unisexual. Male flowers: stamens 1-6, free or sometimes connate, filaments absent or distinct. Female flowers: gynoecia usually crowded, ovary subglobose to ovoid or obovoid, 1-4-locular, ovule 1 per locule, stylar region absent, short or very long, conoid to cylindric, stigma variably shaped. Berries 1- to few seeded, orange to red, blue or white. Seeds ellipsoid, testa smooth, thin, embryo large, somewhat green superficially, endosperm absent.

參考文獻