Merremia wurdackii
Nomenclature
Accepted name/Authority/Place of publication:
Merremia wurdackii Austin & Staples, Mem. N.Y. Bot. Gard. 32: 322. 1981. TYPE. Venezuela. Bolívar: Isla Santa Elena, Río Orinoco opposite mouth of Rio Pargueni, alt. 100-150 m, 13 Dec 1955, Wurdack & Monachino 39865 (holotype NY; isotypes FAU, INPA).
Description
Habit:
Herbs, stems twining, cylindrical, 2 mm or more in diameter, pubescent with simple trichomes, canescent toward the tips.
Leaves:
Petioles 10-23 mm long, canescent. Leaf blades attenuate-cordate, 4-8.5 cm long, 2-3.5 cm wide, entire, finally pubescent with simple, appressed indumentum, apically acute, basally subtruncate to cordate to subhastate.
Inflorescences:
Flowers solitary or less commonly 3 or more in cymes, the peduncles 5-20 cm long, pubescent, the pedicels 1-2 cm long, the bracts canescent with short trichomes, ovate-elliptic, 8-15 mm long, enlarging and becoming chartaceous in fruit or deciduous.
Flowers:
Sepals ovate, subequal or the outer slightly shorter, finely canescent, 1.5-2.5 cm long, 1-1.4 cm wide, larger in fruit; corollas yellow, campanulate, 2.5-3.5 cm long, glabrous; stamens subequal; the filaments glandular pubescent basally, the anthers 3-4 mm long, spirally dehiscent; Pollen 3-colpate; ovary ovoid, 1-1.5 mm long and wide, glabrous, the style 7-8 mm long, the stigma 2-globose.
Pollen:
Pollen 3-colpate.
Fruits:
Fruits capsular, dark brown, 4-lobed, 4(-6)-valvate, 4-locular.
Seeds:
Seeds 3-4(-5) reddish-brown, glabrous, 5-7 mm long, rounded.
References:
Austin, D. F. & G. W. Staples. Convolvulaceae in Flora Neotropica [unpublished data].
Biogeography, Ecology and Natural History
Distribution Map:
Distribution:
Known from Venezuela and Brazil.
References:
Austin, D. F. & G. W. Staples. Convolvulaceae in Flora Neotropica [unpublished data].
Authorship for webpage
Editor:
George Staples, Esmond Er
Contributors: