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Ernest's spiderwort

Virginia spiderwort, éphémère de virginie

Habit Herbs, erect or ascending, rarely rooting at nodes. Herbs, erect or ascending, rarely rooting at nodes.
Roots

(1–)1.5–5 mm thick, fleshy.

(1.5–)2–4 mm thick, fleshy.

Stems

not flexuous, 5–40 cm;

internodes usually glabrous.

5–35 cm;

internodes glabrous or occasionally distal internodes sparsely puberulent.

Leaves

spirally arranged, sessile;

blade dull green, linear-lanceolate to lanceolate-oblong, 9–27 × 1–4 cm (distal leaf blades wider than sheaths when sheaths opened, flattened), base cuneate to rounded, apex acuminate, not glaucous, glabrous or sparsely puberulent.

spirally arranged, sessile;

blade linear-lanceolate, 13–37 × 0.4–2.5 cm (distal leaf blades equal to or narrower than sheaths when sheaths opened, flattened), apex acuminate, glabrous or occasionally puberulent.

Inflorescences

terminal;

bracts foliaceous.

terminal and (rarely) axillary;

bracts foliaceous, well developed, not saccate, sparsely to densely pilose.

Flowers

distinctly pedicillate;

pedicels 2–3.2 cm, minutely pilose;

sepals somewhat inflated, 9–16 mm, uniformly eglandular-pilose;

petals distinct, deep blue, purple, or rose-red, broadly ovate, not clawed, 1.2–1.5 cm;

stamens free;

filaments bearded.

distinctly pedicillate;

pedicels 1.2–3.5 cm, eglandular-pilose or puberulent;

sepals ± inflated, 7–16 mm, uniformly eglandular-pilose;

petals distinct, blue to purple, occasionally rose or white, broadly ovate, not clawed, 1.2–2 cm;

stamens free;

filaments bearded.

Capsules

5–7 mm.

4–7 mm.

Seeds

2–3 mm.

2–3 mm.

2n

= 12.

= 12, 24.

Tradescantia ernestiana

Tradescantia virginiana

Phenology Flowering spring (Mar–May). Flowering spring–summer (Mar–Jul).
Habitat Wooded hillsides, ledges and bluffs, occasionally along streams or in pastures Woods, thickets, fields, roadsides and railroad rights-of-way
Distribution
from FNA
AL; AR; GA; MO; OK; TX
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; CT; DC; DE; GA; IA; IL; IN; KY; MA; MD; ME; MI; MO; MS; NC; NH; NJ; NY; OH; OK; PA; RI; SC; TN; VA; VT; WI; WV; ON
[WildflowerSearch map]
[BONAP county map]
Discussion

Tradescantia ernestiana is sympatric with, and easily confused with, T. virginiana in northern Alabama and perhaps northern Georgia [reported from Georgia by C. Sinclair (1967, p. 87), but no specimens are cited and I have seen none]. At present, the two species can be separated only by the relative width of the blade and sheath of the distal leaves. They are obviously closely related and should be studied in the field in the southern Appalachians where their ranges overlap. The Texas record is taken from C. Sinclair (1967).

The hybrid Tradescantia ernestinana × T. ozarkana is known from Arkansas and Missouri.

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

The records from the northern parts of the range of Tradescantia virginiana may all represent garden escapes (E. Anderson 1954). The uncertainty about the records from Arkansas and Mississippi reflects the difficulty in identifying some specimens. The specimens in question come from areas in which T. hirsutiflora (but not T. virginiana) has been recorded (E. Anderson and R. E. Woodson Jr. 1935). The exact geographic boundaries between these putatively allopatric species are uncertain. D. T. MacRoberts (1980b) has made a useful contribution toward our knowledge of these species.

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

Source FNA vol. 22. FNA vol. 22, p. 179.
Parent taxa Commelinaceae > Tradescantia Commelinaceae > Tradescantia
Sibling taxa
T. bracteata, T. brevifolia, T. buckleyi, T. crassifolia, T. crassula, T. edwardsiana, 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. 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. wrightii, T. zebrina
Synonyms T. brevicaulis
Name authority E. S. Anderson & Woodson: Contr. Arnold Arbor. 9: 58, plate 8, map 4. (1935) Linnaeus: Sp. Pl. 1: 288. (1753)
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