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four-seed vetch, lentil tare, lentil vetch, slender vetch, smooth tare, sparrow vetch

Carolina or pale or wood vetch, Carolina vetch

Habit Herbs annual, sparsely pubescent. Herbs perennial.
Stems

sprawling or climbing, filiform, 1–5 dm.

sprawling or climbing, slender, 3–15 dm.

Leaves

1–4 cm;

tendrils simple or branched;

stipules much smaller than leaflets, semisagittate, without nectariferous patch;

leaflets 4–12, blades oblanceolate or elliptic to linear, 6–20 × 1–5 mm, apex acute to apiculate, surfaces glabrous or sparsely villous.

2–8 cm;

tendrils mucronate on proximal leaves, simple or branched on distal leaves;

stipules much smaller than leaflets, ligulate, without nectariferous patch;

leaflets 10–24, blades elliptic-oblong or oblanceolate to linear, 10–30 × 2–6 mm, apex obtuse, surfaces glabrous or abaxial puberulent.

Inflorescences

1–3-flowered, 1–3 cm, equal to or longer than subtending leaf rachis.

7–20-flowered, 3–10 cm, shorter to longer than subtending leaf rachis.

Flowers

3–6 mm;

calyx base symmetric, lobes unequal, longer than or equal to tube;

corolla light purple to pale lavender, banner stenonychioid, blade equal to claw, glabrous;

style compressed abaxially, sparsely pubescent apically.

8–12 mm;

calyx base symmetric, lobes subequal, shorter than tube;

corolla white with blue tip, banner pandurate, blade equal to or longer than claw, glabrous;

style compressed adaxially, pubescent apically, tufted abaxially.

Legumes

yellow to light brown, oblong, 10–15 × 3–4 mm, tip rounded, stigma attached to center of curve, glabrous;

stipe to 1 mm.

reddish brown, narrowly oblong, 15–30 × 4–5 mm, obliquely long-tipped, glabrous;

stipe to 2 mm.

Seeds

4, greenish gray to purplish black, subglobose, 1.5–2 mm diam.;

hilum encircling 1/5–1/4 circumference of seed.

5–8 violet brown to black, compressed-subglobose or subglobose, 2–4 mm diam.;

hilum encircling 3/4 circumference of seed.

2n

= 14.

Vicia tetrasperma

Vicia caroliniana

Phenology Flowering Apr–Jun. Flowering Mar–May.
Habitat Fields, roadsides, waste areas, woodlands. Rich alluvial woodlands, woodland borders, roadsides, old fields.
Elevation 0–2000 m. (0–6600 ft.) 0–1000 m. (0–3300 ft.)
Distribution
from FNA
AL; AR; CA; CT; DC; DE; FL; GA; ID; KY; LA; MA; MD; ME; MI; MS; NC; NH; NJ; NY; OH; OR; PA; RI; SC; TN; TX; VA; VT; WA; WV; BC; NB; NF; NS; ON; PE; QC; SPM; Europe [Introduced in North America; introduced also in s South America (Chile)]
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; DC; DE; FL; GA; IL; IN; KY; LA; MD; MI; MO; MS; NC; NJ; NY; OH; PA; SC; TN; TX; VA; WI; WV; ON
[WildflowerSearch map]
[BONAP county map]
Discussion

Vicia tetrasperma var. tenuissima Druce in the sense of M. L. Fernald (1950), and listed as a separate variety of V. tetrasperma, is considered here and by D. Isely (1990) as a synonym of V. tetrasperma.

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

Vicia caroliniana possibly intergrades with V. acutifolia where their ranges overlap in Georgia and South Carolina (D. Isely 1990); V. caroliniana and V. pulchella, native to the American Southwest, are almost certainly related.

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

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Vicia Fabaceae > subfam. Faboideae > Vicia
Sibling taxa
V. acutifolia, V. americana, V. benghalensis, V. caroliniana, V. cracca, V. disperma, V. faba, V. floridana, V. grandiflora, V. hassei, V. hirsuta, V. lathyroides, V. leucophaea, V. ludoviciana, V. lutea, V. minutiflora, V. narbonensis, V. nigricans, V. ocalensis, V. pannonica, V. pulchella, V. sativa, V. sepium, V. villosa
V. acutifolia, V. americana, V. benghalensis, V. cracca, V. disperma, V. faba, V. floridana, V. grandiflora, V. hassei, V. hirsuta, V. lathyroides, V. leucophaea, V. ludoviciana, V. lutea, V. minutiflora, V. narbonensis, V. nigricans, V. ocalensis, V. pannonica, V. pulchella, V. sativa, V. sepium, V. tetrasperma, V. villosa
Synonyms Ervum tetraspermum V. hugeri
Name authority (Linnaeus) Schreber: Spic. Fl. Lips., 26. (1771) Walter: Fl. Carol., 182. (1788)
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