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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
from FNA
FL; Mexico; Central America; West Indies [Introduced in North America]
[BONAP county map]
from FNA
TX
[BONAP county map]
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
T. bracteata, T. brevifolia, T. buckleyi, T. crassifolia, T. crassula, T. edwardsiana, T. ernestiana, T. fluminensis, T. gigantea, T. hirsuticaulis, T. hirsutiflora, T. humilis, T. leiandra, T. longipes, T. occidentalis, T. ohiensis, T. ozarkana, T. pallida, T. paludosa, T. pedicellata, T. pinetorum, T. reverchonii, T. roseolens, T. subacaulis, T. subaspera, T. tharpii, T. virginiana, T. wrightii, T. zebrina
T. bracteata, T. brevifolia, T. buckleyi, T. crassifolia, T. crassula, T. edwardsiana, T. ernestiana, T. fluminensis, T. gigantea, T. hirsuticaulis, T. hirsutiflora, T. leiandra, T. longipes, T. occidentalis, T. ohiensis, T. ozarkana, T. pallida, T. paludosa, T. pedicellata, T. pinetorum, T. reverchonii, T. roseolens, T. spathacea, T. subacaulis, T. subaspera, T. tharpii, T. virginiana, T. wrightii, T. zebrina
Synonyms Rhoeo discolor, Rhoeo spathacea
Name authority Swartz: Prodr. 57. (1788) Rose: Contributions from the U. S. National Herbarium 5: 204. (1899)
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