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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

T. ohiensis Raf.
WAIF
Leaf: 5–45 cm, glabrous (occasionally sheaths with long, shaggy hairs), glaucous. Inflorescence: terminal and axillary, flowers few to many. Flower: sepals 4–15 mm.
Gardens, occasionally escaping; 50 m. North Coast (Humboldt Co.); native to eastern North America. [Tradescantia virginiana L., misappl.] Cult as ornamental. May [Online Interchange]

Previous taxon: Tradescantia fluminensis
Next taxon: Cyperaceae

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 23 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=46844, accessed on Oct 23 2014

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Geographic subdivisions indicated for the distribution of Tradescantia ohiensis Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.