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FOC | Family List | FOC Vol. 11 | Euphorbiaceae | Phyllanthus

16. Phyllanthus maderaspatensis Linnaeus, Sp. Pl. 2: 982. 1753.

麻德拉斯叶下珠 ma de la si ye xia zhu

Herbs, perennial but often flowering in first year, 0.15-0.9(-1.2) m tall, monoecious, glabrous throughout; stem usually woody at base; branching mostly basal, all similar, erect or ascending. Leaves spiral; stipules ovate, 1.5-2(-4) mm, petiole very short; leaf blade linear-lanceolate to obovate, (7-)10-30(-60) × (1-)2-7(-17) mm, leathery, gray-green, base rounded, apex shortly acuminate; lateral veins obscure. Inflorescences axillary fascicles, most axils with 1 female flower, distal axils with 1-4 male flowers. Male flowers: pedicels ca. 1 mm; sepals 6, suborbicular, ca. 1 × 0.8 mm, margins entire; disk glands 6, small and smooth; stamens 3; filaments connate at base; anthers longitudinally dehiscent. Female flowers: pedicels 1.5-2 mm; sepals 6, suborbicular to subspatulate, ca. 2 × 1.5 mm, margin entire; persistent in fruit; disk glands 6, ± square; ovary globose, 3-celled, smooth; styles 3, ± free. Fruit a capsule, oblate, 1.2-2 × ca. 3 mm, olive green, smooth. Seed 3-sided, ca. 1.3 mm, light brown, with rows of minute tubercles on back and sides.

Slopes with scrub, elsewhere often in disturbed areas. Hong Kong [India, Indonesia, Pakistan, Sri Lanka; Africa, SW Asia, Australia].

Phyllanthus maderaspatensis is known from the Flora area from a single 19th-century collection from Hong Kong. Elsewhere it is a very successful adventive in drier regions. The description is based largely on material from outside China.


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