Pieris 馬醉木屬
作者
LI, Hui-Lin, LU, Sheng-You, YANG, Yuen-Po and TSENG, Yen-Hsueh
型態特徵
Shrubs, occasionally subshrubs or trees, or rarely vines. Leaves opposite or alternate, simple, estipulate. Flowers bisexual, actinomorphic or slightly zygomorphic, solitary or in racemes or panicles. Perianth biseriate, parts of each series usually more or less connate. Calyx 4–7-lobed, usually persistent. Corolla 4–7-segmented, often funnelform-campanulate, convolute or imbricate. Stamens as many or twice as many as petals, free or connate at base; anthers 2-celled, each theca dehiscing introrsely by a terminal pore or longitudinally. Ovary superior or inferior, 4–10- or typically 5-celled; ovules usually numerous per locule; style single, conical to filiform, rarely as many as carpels, stigma simple. Fruit a capsule or berry; seeds usually small, embryo straight, endosperm fleshy.
屬
About 70 genera, widely distributed on acid soils throughout temperate regions; six genera in Taiwan.
參考文獻
Pieris 馬醉木屬
作者
LI, Hui-Lin, LU, Sheng-You, YANG, Yuen-Po and TSENG, Yen-Hsueh
型態特徵
Trees or shrubs; branches terete. Leaves alternate, petiolate, persistent, entire or serrulate. Inflorescences axillary racemes or terminal panicles; calyx 5-lobed or parted, segments open or valvate in bud; corolla ovoid, lobes 5, short, recurved; stamens 10, filaments with 2 divaricate horns at apex; anther cells ovoid, truncate; ovary globose, 5-celled, style cylindric, stigma capitate; ovules many per locule. Capsules globose, loculicidally 5-valved; seeds many, linear-oblong, falcate, not winged, testa loose.
About 10 species, eastern Asia and eastern North America; one species in Taiwan.
