Tradescantia crassifolia |
Tradescantia gigantea |
|
---|---|---|
leatherleaf spiderwort |
giant spiderwort |
|
Habit | Herbs, erect, rarely rooting at nodes. | Herbs, erect or ascending, rarely rooting at nodes. |
Roots | tuberous, thick. |
|
Stems | unbranched or sparsely branched, arachnoid-villous. |
16–100 cm; proximal internodes glabrous, distal glabrous to densely eglandular-puberulent. |
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. |
spirally arranged, sessile (with sheaths ± saccate); blade linear-lanceolate, 10–40 × 0.5–2.5 cm (distal leaf blades equal to or narrower than sheaths when sheaths opened, flattened), glaucous, glabrous or adaxially densely and minutely eglandular-velvety. |
Inflorescences | terminal, 1–4 axillary, sessile in axils of distal reduced leaves, boat-shaped spathes absent. |
terminal, axillary; bracts reduced, bases saccate, minutely velvety. |
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 0.9–2.8 cm, densely eglandular-puberulent; sepals 5–13 mm, densely, minutely eglandular-puberulent; petals distinct, magenta to blue or violet, broadly obovate, not clawed, 1.5–1.8 cm; stamens free; filaments bearded. |
Capsules | 3.5–4 mm. |
6–7 mm. |
Seeds | 2 mm. |
2–3 mm. |
2n | = 12, 24, 24+ (Mexico). |
= 12. |
Tradescantia crassifolia |
Tradescantia gigantea |
|
Phenology | Flowering summer–early fall. | Flowering spring (Mar–May). |
Habitat | Specific habitat unkown | Rocky limestone areas, pasturelands, weedy lots, roadsides, and along railroad tracks |
Distribution |
TX; Mexico; to Central America (Guatemala)
|
LA; 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.) |
Plants of Tradescantia gigantea growing around Ruston, Louisiana may have originated from cultivated plants. They hybridize with T. ohiensis there. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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: 205. (1899) |
Web links |