Tradescantia crassifolia |
Tradescantia humilis |
|
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leatherleaf spiderwort |
Texas spiderwort |
|
Habit | Herbs, erect, rarely rooting at nodes. | Herbs, erect or ascending, rarely rooting at nodes. |
Roots | tuberous, thick. |
tuberous in part, not brownish-tomentose. |
Stems | unbranched or sparsely branched, arachnoid-villous. |
spreading, diffusely branched, particularly at base, 0.5–20(–45) cm, densely pubescent to glabrescent. |
Leaves | 2-ranked, narrowing toward shoot apex; blade lanceolate-elliptic to ovate, 4–15 × 2–3.5 cm (distal leaf blades wider or narrower than sheaths when sheaths opened, flattened), base cordate-clasping, sparsely pilose to densely arachnoid-villous. |
somewhat recurved or falcate; blade deep green, or paler and somewhat glaucous, linear-lanceolate, 11–20 × 1–2 cm (distal leaf blades equal to or narrower than sheaths when sheaths opened, flattened), margins usually tinged with purple, crisped, puberulent to glabrescent. |
Inflorescences | terminal, 1–4 axillary, sessile in axils of distal reduced leaves, boat-shaped spathes absent. |
terminal, solitary, or more frequently also axillary and pedunculate from distal nodes; bracts foliaceous, similar to leaves in form, puberulent to glabrescent. |
Flowers | distinctly pedicillate; pedicels 0.6–1.4 cm, densely arachnoid-villous; sepals 6.5–8 mm, pilose to densely arachnoid-pubescent; petals distinct, rose-purple to bluish, not clawed, 10–15 mm; stamens free; filaments bearded. |
distinctly pedicillate; pedicels 1.5–2.5 cm, puberulent or pilose with mixed glandular, eglandular hairs; sepals dull green or occasionally edged or suffused with purple, 9–11 mm, pubescent with mixed glandular, eglandular hairs; petals distinct, bright blue or occasionally pink, broadly ovate, not clawed, 11–19 mm; stamens free; filaments bearded. |
Capsules | 3.5–4 mm. |
6–7 mm. |
Seeds | 2 mm. |
2–3 mm; hilum as long as seed. |
2n | = 12, 24, 24+ (Mexico). |
= 12. |
Tradescantia crassifolia |
Tradescantia humilis |
|
Phenology | Flowering summer–early fall. | Flowering spring (Mar–Jun). |
Habitat | Specific habitat unkown | Sandy and rocky soil, formerly also in rich black soil at the edge of the coastal plain, now more commonly in disturbed sites, such as roadsides, fencerows, and railroad rights-of-way |
Distribution |
TX; Mexico; to Central America (Guatemala)
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TX |
Discussion | Although not recorded in any U.S. flora or checklist, Tradescantia crassifolia has been added to the flora based on an old collection from the Chenati Mountains in Texas. Another specimen labeled New Mexico is considered less credible. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Commelinaceae > Tradescantia | Commelinaceae > Tradescantia |
Sibling taxa | ||
Name authority | Cavanilles: Icon. 1: 54, plate 75. (1791) | Rose: Contributions from the U. S. National Herbarium 5: 204. (1899) |
Web links |