Gelsemium sempervirens

(Linnaeus) J. St.-Hilaire

Expos. Fam. Nat. 1: 338. 1805.

Common names: Yellow jessamine
Illustrated
Basionym: Bignonia sempervirens Linnaeus Sp. Pl. 2: 623. 1753
Synonyms: Gelsemium nitidum Michaux
Treatment appears in FNA Volume 14.

Leaves: petiole 2–5.1 mm, gla­­­b­rous or scabridulous; blade lanceolate, elliptic, or ovate, 2–7 × 0.8–2.1 cm, base ­rounded to cuneate, apex obtuse, acute, or acuminate, abaxial surface glabrous or slightly scabridulous at base, adaxial sur­face glabrous. Pedicels bracteolate on distal 1/2. Inflo­rescences solitary flowers or cymes, 2- or 3-flowered. Flowers usually fragrant; sepals lanceolate, oblong, or ovate, 4.3–4.6 × 1.5–1.6 mm, apex obtuse to narrowly rounded, surfaces glabrous; pin flowers: tube 14–27 mm, lobes ovate to suborbiculate, 6.8–10 × 6.5–9.5 mm, surfaces glabrous; filaments 9.1–10.6 mm; anthers 3.9–4.1 mm; styles 12–22.3 mm; thrum flowers: tube 17–24 mm, lobes ovate to suborbiculate, 8.5–13 × 6.8–-12.1 mm, surfaces glabrous; filaments 19–22 mm; anthers 4–4.1 mm; styles 5–12.1 mm. Capsules 13–25 × 7–12 mm, beak 1–2 mm. Seeds unilaterally winged, 4.7–5.4 × 3.1–3.3 mm, wing 5–5.7 mm. 2n = 16.


Phenology: Flowering Mar–May (also sporadically in fall); fruit­ing Sep–Nov.
Habitat: Sandy maritime forests to dry upland for­ests to moist pine flatwoods to swamp forests, roadsides, thickets.
Elevation: 0–1900 m.

Distribution

Ala., Ark., Fla., Ga., La., Miss., N.C., S.C., Tenn., Tex., Va., Mexico (Chiapas, Oaxaca, Puebla, Veracruz), Central America (Guatemala).

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Gelsemium sempervirens"
Alexander Krings +
(Linnaeus) J. St.-Hilaire +
Bignonia sempervirens +
Yellow jessamine +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +, Tenn. +, Tex. +, Va. +, Mexico (Chiapas +, Oaxaca +, Puebla +, Veracruz) +  and Central America (Guatemala). +
0–1900 m. +
Sandy maritime forests to dry upland forests to moist pine flatwoods to swamp forests, roadsides, thickets. +
Flowering Mar–May (also sporadically in fall) +  and fruiting Sep–Nov. +
Expos. Fam. Nat. +
Illustrated +
Gelsemium nitidum +
Gelsemium sempervirens +
Gelsemium +
species +