Jepson Flora Project: Jepson Interchange    

 
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DROSERACEAE

SUNDEW FAMILY

William J. Stone

Annual, perennial herb, subshrub, carnivorous; roots weak
Leaves generally basal rosette, often coiled in bud; blade with insect-catching hairs on upper surface, hairs either gland-tipped and sticky or sensitive bristles
Inflorescence: cyme or raceme-like; flowers 1–few, on long peduncle
Flower bisexual, radial; calyx lobes generally 5; petals generally 5, free or slightly fused; stamens 4–20; pistil 1, ovary superior, chamber 1, placentas generally 3(5), parietal, style branches generally 3(5), each generally 2-lobed
Fruit: capsule, loculicidal; valves generally 3(5)
Seeds generally many, spindle-shaped
Genera in family: 4 genera (3 with 1 sp. each), 100 species: temp, tropical, especially Australia, New Zealand, especially in bogs, swamps; some cultivated as novelties (Dionaea, Venus' fly-trap, of se US)
Etymology: (Greek: dewy)

DROSERA

SUNDEW

Annual, perennial herb, often brownish or reddish
Leaf: petiole long; blade hairs on upper surface stalked, gland-tipped (glands secrete sticky, insect-trapping fluid, leaf folds around prey, which is digested by enzymes, ribonucleases, and bacteria)
Inflorescence: raceme-like cyme
Flower: sepals, petals, stamens generally 5; main style branches, placentas, valves generally 3
Species in genus: 100 species: range of family. D. filiformis Raf. and D. linearis Goldie were planted in NCo (Mendocino Co.) and may persist.

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