Tradescantia spathacea |
Tradescantia humilis |
|
---|---|---|
boat-lily, moses-in-the-cradle, oyster-plant |
Texas spiderwort |
|
Habit | Herbs, erect or ascending, rarely rooting at nodes. | Herbs, erect or ascending, rarely rooting at nodes. |
Roots | tuberous in part, not brownish-tomentose. |
|
Stems | unbranched, short. |
spreading, diffusely branched, particularly at base, 0.5–20(–45) cm, densely pubescent to glabrescent. |
Leaves | spirally arranged; blade usually abaxially purple, adaxially green, strap-shaped, to 35 × 5 cm (distal leaf blades wider or narrower than sheaths when sheaths opened, flattened), leathery, succulent, glabrous. |
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 | axillary, sessile, or pedunculate in axils well below shoot apex, cymes enclosed in pairs of boat-shaped spathes. |
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 glabrous; sepals distinct, white, 3–6 mm, glabrous; petals distinct, white, ovate, not clawed; 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- or (by abortion) 2-locular, 3–4 mm. |
6–7 mm. |
Seeds | 1 per locule, 3–4 mm. |
2–3 mm; hilum as long as seed. |
2n | = 12 (Belize). |
= 12. |
Tradescantia spathacea |
Tradescantia humilis |
|
Phenology | Flowering winter (Jan). | Flowering spring (Mar–Jun). |
Habitat | Occasionally escaped to hammocks and weedy places | 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 |
FL; Mexico; Central America; West Indies [Introduced in North America] |
TX |
Discussion | Tradescantia spathacea is native to southern Mexico, Central America, and the West Indies. (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 | ||
Synonyms | Rhoeo discolor, Rhoeo spathacea | |
Name authority | Swartz: Prodr. 57. (1788) | Rose: Contributions from the U. S. National Herbarium 5: 204. (1899) |
Web links |