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inchplant, wandering-jew

giant spiderwort

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

16–100 cm;

proximal internodes glabrous, distal glabrous to densely eglandular-puberulent.

Leaves

2-ranked;

blade variegated, abaxially reddish purple, adaxially striped green and white, lanceolate-elliptic to ovate-elliptic, 3–9 × 1.5–3 cm (distal leaf blades wider or narrower than sheaths when sheaths opened, flattened), base oblique, cuneate, apex acute to acuminate.

spirally arranged, sessile (with sheaths ± saccate);

blade linear-lanceolate, 10–40 × 0.5–2.5 cm (distal leaf blades equal to or narrower than sheaths when sheaths opened, flattened), glaucous, glabrous or adaxially densely and minutely eglandular-velvety.

Inflorescences

terminal, consisting of pairs of sessile cymes enclosed in sheaths of spathaceous bracts, pedunculate; spathaceous bracts foliaceous, reduced.

terminal, axillary;

bracts reduced, bases saccate, minutely velvety.

Flowers

subsessile;

sepals basally connate, 4–5 mm;

petals pink, clawed, claws basally connate forming tube;

stamens epipetalous;

filaments bearded.

distinctly pedicillate;

pedicels 0.9–2.8 cm, densely eglandular-puberulent;

sepals 5–13 mm, densely, minutely eglandular-puberulent;

petals distinct, magenta to blue or violet, broadly obovate, not clawed, 1.5–1.8 cm;

stamens free;

filaments bearded.

Capsules

3-locular;

locules 2-seeded.

6–7 mm.

Seeds

2–3 mm.

2n

= 12.

Tradescantia zebrina

Tradescantia gigantea

Phenology Flowering fall–winter (Sep–Feb). Flowering spring (Mar–May).
Habitat Hummocks and weedy places Rocky limestone areas, pasturelands, weedy lots, roadsides, and along railroad tracks
Distribution
from FNA
FL; native; tropical America [Introduced in North America]
[BONAP county map]
from FNA
LA; TX
[BONAP county map]
Discussion

Plants of Tradescantia gigantea growing around Ruston, Louisiana may have originated from cultivated plants. They hybridize with T. ohiensis there.

(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. spathacea, T. subacaulis, T. subaspera, T. tharpii, T. virginiana, T. wrightii
T. bracteata, T. brevifolia, T. buckleyi, T. crassifolia, T. crassula, T. edwardsiana, T. ernestiana, T. fluminensis, 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
Synonyms Zebrina pendula
Name authority Hort ex Bosse: Vollstandiges Handb. Blumengart. 4: 655. (1849) Rose: Contributions from the U. S. National Herbarium 5: 205. (1899)
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