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COMMELINACEAE SPIDERWORT FAMILY

Robert E. Preston & Elizabeth McClintock

Annual, perennial herb, generally glabrous. Stem: prostrate to erect or climbing; nodes often rooting. Leaf: alternate, entire, simple, linear to ovate, closed basal sheath or lower leaf clasping stem. Inflorescence: cyme, umbel-like or not, terminal or terminal and axillary, subtended by 1–2 bracts [not]. Flower: generally bisexual, bilateral or radial, generally insect-pollinated; sepals 3, generally green; petals 3, blue, white, rose, purple, or pale violet, generally ephemeral; stamens 6 (3 sterile or not), filaments generally slender, often hairy; ovary superior, chambers 3, style 1. Fruit: generally capsule. Seed: 1–few per chamber.
40 genera, ± 630 species: especially tropics, subtropics some cultivated as ornamental. [Faden 2000 FNANM 22:170–197] —Scientific Editor: Thomas J. Rosatti.

Key to Commelinaceae

TRADESCANTIA
Perennial herb. Inflorescence: umbel-like, subtended by 2 leaf-like bracts. Flower: radial; petals equal, blue, rose, purple, or white; filament hairs generally from base, each a row of unusually large cells.
± 70 species: North America, South America. (John Tradescant, British naturalist, 1570s–1638)
Unabridged references: [Faden 2000 FNANM 22:173–187]

Key to Tradescantia

Previous taxon: Commelina benghalensis
Next taxon: Tradescantia fluminensis

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 25 2014
Citation for this treatment: [Author of taxon treatment] 2013. Tradescantia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=11467, accessed on Dec 25 2014

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