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FOC | Family List | FOC Vol. 5 | Phytolaccaceae

1. Phytolacca Linnaeus, Sp. Pl. 1: 441. 1753.

商陆属 shang lu shu

Phytolacca acinosa

Credit: Harvard University Herbaria

Herbs or shrubs, rarely trees, erect, rarely scandent. Root usually thick, fleshy. Stems and branches terete, sulcate or angular, glabrous or young shoot and inflorescence pubescent. Leaves petiolate, rarely sessile; leaf blade ovate, elliptic, or lanceolate, apex acute or obtuse. Flowers pedicellate or sessile, in racemes, cymose panicles, or spikes, terminal or leaf-opposed. Tepals 5, persistent, spreading or reflexed, oblong to ovate, herbaceous or membranous, apex obtuse. Stamens 6-33, inserted at base of tepals; filaments subulate or linear, free or connate at base, included or exserted. Ovary subglobose, carpels 5-16, free or connate. Styles subulate. Fruit a fleshy berry, oblate. Seeds black, shiny, reniform, compressed; testa hard and fragile, smooth; tegument membranous.

About 25 species: nearly cosmopolitan, mostly native to South America, a few species in Africa and Asia; four species (one endemic, one introduced) in China.

1 Inflorescence arching or pendulous; flowers loosely spaced; infructescence pendent.   4 P. americana
+ Inflorescence erect; flowers densely spaced; infructescence erect.   (2)
2 (1) Seeds with slender concentric striations; carpels 6-10, connate.   3 P. japonica
+ Seeds smooth; carpels usually 8, distinct or connate.   (3)
3 (2) Carpels distinct; stamens 8-10; carpels usually green or white.   1 P. acinosa
+ Carpels connate; stamens 12-16; carpels usually pink.   2 P. polyandra

Lower Taxa


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