Nomenclature
Accepted name/Authority/Place of publication:
Operculina brownii Ooststr., Blumea 3 (1939) 366, nom. nov. non Operculina alata (Hamilton) Urb.
Synonyms:
Ipomoea alata R.Br., Prod. (1810) 484.
Convolvulus alatus (R.Br.) Spreng., Syst. 1 (1825) 596, nom. illeg.
Description
Habit:
A glabrous twiner. Stems angular to narrowly alate.
Leaves:
Leaves narrowly ovate-oblong or ovate, 5½-8½ by 2-4½ cm, long-attenuate to the acute or obtusish, mucronulate apex; midrib and 7-8 nerves on either side prominent beneath; petiole much shorter than the blade, ca 1-2 cm.
Inflorescences:
Peduncles stout angular or narrowly winged, 2-3½ cm. Pedicels angular, clavate above, 1½-2½ cm.
much thickened in fruit.
Flowers:
Sepals broadly eliptic to orbicular, broadly rounded at the apex, 22-25 mm long; inner ones only slightly shorter than outer ones all glabrous and all much enlarged in fruit, up to 30 mm long. Corolla funnel-shaped, to 5 cm long (only one examined), white, glabrous.
Fruits:
Capsule 3½-4 cm diam., enclosed by the large cup-shaped calyx.
Seeds:
Seeds ea 15 mm long, glabrous, dull black.
References:
Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 456-457.
Biogeography, Ecology and Natural History
Distribution:
Australia, Thursday Island, likely to occur inthe dry savannah regions of S. NewGuinea.
Authorship for webpage
Editor:
G. Staples
Contributors:
Classification:
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