Tradescantia hirsutiflora
Tradescantia subaspera
hairyflower spiderwort
zigzag spiderwort
1–1.5(–2) mm thick, scarcely fleshy.
unbranched or sparsely branched, 5–50 cm;
internodes densely spreading, pilose or hirsute to glabrous.
often flexuous, 30–100 cm;
internodes pilose to glabrescent.
spirally arranged, sessile;
blade linear-lanceolate, 10–32 × 0.6–2 cm (distal leaf blades equal to or narrower than sheaths when sheaths opened, flattened), apex acuminate, usually pilose, occasionally glabrous or glabrescent.
spirally arranged, at least proximal ones distinctly petiolate;
blade dark green, lanceolate-oblong to lanceolate-elliptic or lanceolate, 6–30 × (0.4–)1–6.5 cm (distal leaf blades wider than sheaths when sheaths opened, flattened), apex acuminate, glabrous to puberulent.
terminal, sometimes axillary;
bracts foliaceous, well developed, not saccate, sparsely to densely pilose.
terminal, usually also axillary at distal nodes, axillary inflorescences sessile or variously pedunculate;
bracts foliaceous.
distinctly pedicillate;
pedicels 1–3 cm, usually pilose;
sepals not inflated, 7–16 mm, usually uniformly eglandular-pilose, rarely a few inconspicuous glandular hairs present;
petals distinct, bright blue to rose, rarely white, broadly ovate, not clawed, 12–19 mm;
stamens free;
filaments bearded.
distinctly pedicillate;
pedicels 1–1.7 cm, pilose to glabrous;
sepals 4–10 mm, puberulent with glandular, eglandular, or mixture of glandular, eglandular hairs, occasionally glabrous;
petals distinct, light to dark blue, rarely white, broadly ovate, not clawed, 10–15 mm;
stamens free;
filaments bearded.
5–7 mm.
4–6 mm.
2–3 mm.
2–3 mm.
= 12, 24.
= 12, 24.
Tradescantia hirsutiflora
Tradescantia subaspera
Tradescantia hirsutiflora was considered their most ill-defined species by E. Anderson and R. E. Woodson Jr. (1935). The difficulties in separating it from T. virginiana have been mentioned under that species. A specimen from Beaufort County, South Carolina appears to be a hybrid between T. hirsutiflora and T. ohiensis, but there is no record of T. hirsutiflora from the state. Some specimens from Highlands County, Florida will key to, and probably are, T. hirsutiflora. They represent a range disjunction from the Florida panhandle. Their relationships with the co-occurring T. roseolens are being investigated.
This species commonly has been confused with Tradescantia hirsuticaulis (J. K. Small 1933; R. P. Wunderlin 1982), perhaps because of the similar name. They are not closely related.
Specimens of Tradescantia hirsutiflora with glandular hairs on the sepals were not found by D. T. MacRoberts (1980b). In Texas plants with glandular hairs are frequent, and the glandular hairs may be numerous and conspicuous. These plants, which have been referred to T. bracteata by MacRoberts, need to be investigated further. I have also seen three sheets of T. hirsutiflora from Louisiana and one from Mississippi that have a few inconspicuous glandular hairs among the numerous longer, eglandular ones.
The following hybrids are known: Tradescantia hirsutiflora × T. occidentalis, from Alabama, Louisiana; T. hirsutiflora × T. ohiensis, Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, South Carolina; T. hirsutiflora × T. paludosa, Arkansas, Louisiana; and T. hirsutiflora × T. roseolens, Florida.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Two varieties are recognized by E. Anderson and R. E. Woodson Jr. (1935): Tradescantia subaspera var. subaspera, with the stems more or less conspicuously flexuous distally and the distal lateral inflorescences sessile (western extensions of Appalachian Plateau from western West Virginia, central Kentucky, and Tennessee to Illinois and Missouri); and T. subaspera var. montana (Britton) Anderson & Woodson, with the stems straight or only slightly flexuous distally and all the lateral inflorescences pedunculate (southern Appalachians from southwestern Virginia to northern Alabama and Georgia, also the coastal plain from northern Florida to Louisiana). Many specimens can only be determined by their locale, so I do not find the separation of the two varieties very meaningful. The distribution record for the District of Columbia is based on a specimen believed to be a garden escape; that from southern Florida on a specimen cited by C. Sinclair (1967).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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