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small-leaf spiderwort, white-flower wandering jew

Wright's spiderwort

Habit Herbs, decumbent, rooting at nodes. Herbs, erect or ascending, rarely rooting at nodes.
Stems

unbranched, 5–18 cm.

Leaves

2-ranked;

blade lanceolate-elliptic to ovate-lanceolate, 2.5–5 × 1–2 cm (distal leaf blades wider or narrower than sheaths when sheaths opened, flattened), margins ciliolate, apex acute, glabrous.

blade linear-lanceolate, 4–10 × 0.2–0.5 cm (distal leaf blades equal to or narrower than sheaths when sheaths opened, flattened), firmly membranaceous to subsucculent, glaucous or glaucescent, glabrous.

Inflorescences

terminal, becoming leaf-opposed, sometimes axillary from distalmost leaf axil, 1–2 cyme pairs per stem;

bracts mostly foliaceous, occasionally reduced.

terminal, solitary;

bracts foliaceous.

Flowers

distinctly pedicillate;

pedicels 1–1.5 cm, glandular-pilose;

sepals 5–7 mm, midrib pilose with eglandular hairs;

petals distinct, white, not clawed, 8–9 mm;

stamens free;

filaments white, densely bearded with white hairs.

distinctly pedicillate;

pedicels 1.2–1.7 cm, with few to many minute glandular hairs (or glabrous);

sepals glaucous or glaucescent, 0.5–0.6 cm, glabrous or with a few minute glandular hairs at base;

petals distinct, rose to magenta or purple, broadly ovate, not clawed, 1 cm;

stamens free;

filaments bearded.

Capsules

3–4 mm.

Seeds

2–3 mm.

n

= 6.

Tradescantia fluminensis

Tradescantia wrightii

Phenology Flowering spring–fall. Flowering spring–fall (May–Sep).
Habitat Woods, roadsides, and open areas, sometimes as weed Moist canyon stream banks
Distribution
from FNA
AL; CA; FL; LA; native; South America (Brazil–Argentina); Africa (South Africa); Australia [Introduced in North America; introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
NM; TX; Mexico (Chihuahua, Coahuila)
[BONAP county map]
Discussion

This species was recorded north to North Carolina (J. K. Small 1933), but I have not seen any supporting records from Georgia or North Carolina.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Tradescantia wrightii var. glandulopubescens was described for Mexican plants with glandular-pubescent pedicels and sepals (B. L. Turner 1983), and this variety was listed for Texas (B. L. Turner 1993; S. L. Hatch et al. 1990). All U.S. collections that I have examined, however, including the holotype of T. wrightii, have at least some glandular hairs on these parts. Marshall Johnson believes that this is a valid variety, and I may not have examined typical specimens, but the diagnosis is not differential from the typical variety.

Tradescantia wrightii and T. pinetorum belong to section Tradescantia ser. Tuberosae D. R. Hunt and differ from the species of ser. Virginianae D. R. Hunt (species 1–19) by being geophytes (instead of hemicryptophytes) and in having the hilum much shorter than the seed (instead of ± equal to the seed). Tradescantia wrightii differs from T. pinetorum by its lack of root tubers, its glabrous leaves and internodes, and the absence of lateral inflorescences. The glandular hairs on the pedicels and sepal bases, much shorter than those of T. pinetorum, are easily overlooked.

(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. 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. spathacea, 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. humilis, 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. zebrina
Name authority Vellozo: Florae Fluminensis 140; plate vol. 3, 152. (1829) Rose & Bush
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