Pentalinon luteum

(Linnaeus) B. F. Hansen & Wunderlin

Taxon 35: 167. 1986.

Common names: Hammock viper’s-tail wild allamanda
Illustrated
Basionym: Vinca lutea Linnaeus Cent. Pl. II, 12. 1756
Synonyms: Urechites andrewsii Small U. luteus (Linnaeus) Britton U. luteus var. sericeus R. W. Long U. neriandrus Grisebach ex Miers U. pinetorum Small
Treatment appears in FNA Volume 14.

Woody vines, occasionally suf­frutescent at base. Stems gla­brous or densely pubescent. Leaves opposite; petiole 5–12 mm, pubescent; blade broadly obovate to oblong, 30–60 × 15–40 mm, membranous to subcoriaceous, base cuneate to acute or slightly cordate, margins often revolute, apex obtuse to acute or apiculate, surfaces pubescent abaxially. Peduncles 20–40 mm, sparsely pubescent. Pedicels 5–20 mm, sparsely pubescent. Flowers: calyx lobes linear-lanceolate, 7–12 mm, pubescent or glabrate; corolla glabrous abaxially, usually eglandular-pubescent adaxially, tube 6–15 × 2–3 mm, throat 15–35 × 8–12 mm, lobes spreading, obliquely rounded-obovate, 20–25 × 18–22 mm, adjacent lobes overlapping for 1/2+ of their length from base. Follicles 120–180 × 4–5 mm. Seeds 10–12 × 1 mm not including beak, beak ± as long as body of seed. 2n = 12.


Phenology: Flowering and fruiting year-round.
Habitat: Roadside thickets, pine flatwoods, coastal hammocks, mangrove swamps, beach dunes.
Elevation: 0–10 m.

Distribution

Fla., West Indies, South America (Colombia).

Discussion

In Florida, Pentalinon luteum occurs sporadically from St. Lucie and Lee counties southward.

G. E. Burrows and R. J. Tyrl (2013) reported that in Cuba, where Pentalinon luteum is locally abundant, cattle may suffer hemorrhagic diarrhea and sudden death from ventricular fibrillation upon ingestion of the plants.

Selected References

None.

Lower Taxa

None.
... more about "Pentalinon luteum"
David E. Lemke +
(Linnaeus) B. F. Hansen & Wunderlin +
Vinca lutea +
Hammock viper’s-tail +  and wild allamanda +
Fla. +, West Indies +  and South America (Colombia). +
0–10 m. +
Roadside thickets, pine flatwoods, coastal hammocks, mangrove swamps, beach dunes. +
Flowering and fruiting year-round. +
Illustrated +
Urechites andrewsii +, U. luteus +, U. luteus var. sericeus +, U. neriandrus +  and U. pinetorum +
Pentalinon luteum +
Pentalinon +
species +