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Elatinaceae Dumort. Search in IPNISearch in NYBG Virtual Herbarium Decrease font Increase font Restore font
 

Published In: Analyse des Familles de Plantes 44, 49. 1829. (Anal. Fam. Pl.) Name publication detailView in Biodiversity Heritage Library
 

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Project Data     (Last Modified On 7/23/2009)

 

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ELATINACEAE (Waterwort Family)

Plants annual. Stems loosely ascending, often rooting at the lower nodes. Leaves opposite, sessile or nearly so, the blades simple, the margins entire or finely toothed. Stipules scalelike. Inflorescences axillary, the flowers solitary or in small clusters of 2 or 3. Flowers inconspicuous, actinomorphic, perfect, hypogynous, sessile or short-stalked. Sepals 2–5(6), free or fused toward the base. Petals 2–5(6), shorter than to about as long as the sepals, free. Stamens as many or twice as many as the petals, in 1 or 2 whorls, the filaments free, the anthers ovoid, attached at the midpoint, yellow. Staminodes absent. Pistil 1 per flower, of 2–5 fused carpels. Ovary superior, with 2–5 locules, the placentation axile or more or less basal. Styles 2–5, short, the stigmas capitate. Ovules numerous. Fruits capsules, 2–5-valved, thin-walled, the valves separating from the partitions at dehiscence. Seeds oblong to elliptic in outline, somewhat asymmetric at the ends, the surface with a network of fine ridges and/or pits, sometimes obscurely so. Two genera, 40–50 species, nearly worldwide.

 

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1 1. Sepals and petals 5(6); plants moderately to densely and minutely glandular-hairy; leaf margins with minute, gland-tipped teeth ... 1. BERGIA

Bergia
2 1. Sepals and petals (2)3; plants glabrous; leaf margins entire ... 2. ELATINE Elatine
 

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