Regularity: Regularly occurring
Global Range: Throughout the tropics and West Indies; FL Keys.
Distribution: In disturbed areas, on roadsides and in pastures and vacant lots, at lower to middle elevations. Also on Vieques, St. Croix, St. John, St. Thomas, and Tortola; throughout tropical America.
Public forest: Guánica and Susúa.
State - Kerala, District/s: All Districts"
Merremia umbellata (L.) H. Hallier, Bot. Jahrb. Syst. 16: 552. 1893.
Basionym: Convolvulus umbellatus L.
Synonym: Ipomoea polyanthes Willd. exRoem. & Schult.
Slightly woody vine, climbing or creeping, twining, attaining 5 m in length, with scarce milky latex. Stems slender, cylindrical, glabrous or pubescent, green or copper-colored, with a pair of spiniform projections at the nodes. Leaves alternate; blades simple, 4-17 × 5-12 cm, ovate or lanceolate, chartaceous, glabrous, the apex obtuse, acute, or short-acuminate and mucronate, the base cordiform or sagittate, the margins undulate; upper surface yellowish green, dull, glabrous, with the venation sunken, covered with minute white hairs; lower surface glabrous, with the veins puberulous; petioles cylindrical, usually longer than the blade, pubescent. Flowers in umbelliform cymes, axillary; peduncles shorter than the petioles, angular or cylindrical, puberulous, sometimes with winged projections; pedicels ca. 2 cm long, puberulous. Calyx green, the sepals unequal, 1-1.5 cm long, glabrous, overlapping, ovate or rounded; corolla brilliant yellow, infundibuliform, 2.5-3 cm long, the limb ca. 3 cm in diameter, with obtuse lobes; stamens white, not exserted; stigmas greenish, slightly exserted. Capsule globose, 4-valvate, ca. 1 cm long, brown, covered by the persistent sepals; seeds obtusely trigonal, 5-8 mm long, brown, velvety, with a line of longer hairs on two of the margins.
Phenology: Flowering and fruiting from November to April and sometimes later in the year.
Status: Native, very common.
Selected Specimens Examined: Acevedo-Rdgz., P. 2467; 2472; 4019; 4103; 5402; 6991; Britton, N.L. 10050; Goll, G.P. 499; Sargent, F.H. 90; Shafer, J.A. 2884; Sintenis, P. 829; Stevenson, J.A. 1148.
Comments: Fences, thickets, waste places, disturbed ground, pinelands at 0-1000 feet.
Life History and Behavior
Molecular Biology and Genetics
Barcode data: Merremia umbellata
Statistics of barcoding coverage: Merremia umbellata
Public Records: 1
Specimens with Barcodes: 3
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: NNR - Unranked
Merremia umbellata (common names include hogvine, yellow merremia, and yellow wood rose) is a thin vine growing a maximum thickness of 2 cm (0.79 in). It has many uses in Indian traditional medicines. The flowers attract bees, butterflies and birds.
- Hyland, B. P. M.; Whiffin, T.; Zich, F. A. et al. (Dec 2010). "Factsheet – Merremia umbellata subsp. orientalis". Australian Tropical Rainforest Plants. Edition 6.1, online version [RFK 6.1]. Cairns, Australia: Commonwealth Scientific and Industrial Research Organisation (CSIRO), through its Division of Plant Industry; the Centre for Australian National Biodiversity Research; the Australian Tropical Herbarium, James Cook University. Retrieved 14 May 2013.
- "Merremia umbellata – Hogvine". Flowers of India (website). Retrieved 14 May 2013.
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