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Droseraceae

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Part of the The Families and Genera of Vascular Plants book series (FAMILIES GENERA, volume 5)

Abstract

Perennial or annual carnivorous herbs, sometimes (Aldrovanda) submerged aquatics. Primary root often suppressed; stembase with adventitious roots, sometimes with corms or root tubers. Leaves spiral or rarely whorled, simple, often rosulate, the blade infolded or adaxially circinate in bud, either equipped with irritable, mucilage-tipped tentacles that entrap and digest insects and other little animals (fly-paper trap, Drosera), or modified into fast-closing snap-traps with sensitive bristles (Dionaea, Aldrovanda); intrapetiolar stipules often present. Inflorescences thyrso-paniculate, cincinnate, or (Aldrovanda) flowers solitary. Flowers hermaphroditic, regular, hypogynous; sepals (4)5(–8), more or less connate at base, imbricate; petals as many as sepals, free, convolute; stamens (4)5(–20), distinct, or (Dionaea) basally connate; anthers extrorse, 2-locular, opening longitudinally; gynoecium of 3(5) carpels united to form a compound, unilocular ovary; stylodia distinct and often deeply bifid, or (Dionaea) united into a common style; stigmas terminal, dry; ovules (3–)numerous, anatropous, bitegmic, crassinucellate or tenuinucellate, with long funicles on parietal placentas or a basal placenta. Fruit a loculicidal capsule, rarely indehiscent. Seeds (3–)numerous, mostly scobiform; endosperm copious, rich in starch; embryo small. n = 5−24.

Keywords

Adventitious Root Ellagic Acid Pollen Morphology Glandular Hair Carnivorous Plant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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