Flora of the Hawaiian Islands
Dicotyledon Literature for Ipomoea obscura
Wagner et al., 1990, 1999; Lorence & Wagner, 2020.
   Convolvulaceae -- The Dodder, Morning Glory Family Bibliography
      Ipomoea obscura
General Information
DistributionNative to tropical East Africa, Mascarene Islands, tropical Asia, throughout Malesia to northern Australia, and Fiji.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

Vine; crushed parts with strong odor; stems twining or sometimes prostrate, herbaceous, slender, to ca. 3 m long, glabrate or pilose.
Leaves petiolate; blade chartaceous, ovate to cordate, 2.3‒9 cm long, 2‒6.3 cm wide, pubescent or glabrate, margin entire, apex acuminate or apiculate, base cordate; petiole 2‒5.3 cm long, about as long as blade.
Inflorescences solitary or several-flowered, peduncle 3.5‒4 cm long; bracts scalelike. Flowers on pedicel 10‒20 mm long; sepals narrowly to broadly ovate, 4‒8 mm long, minutely verrucose, glabrous or sparsely pilose, margin scarious, apex acute or apiculate; corolla white or sometimes yellow to orange, usually the limb white and nectar guides yellow, throat purple or brown tinged, campanulate, 1.4‒2.5 cm long.
Fruit brown, globose, 0.8‒1.2 cm long, glabrous.
Seeds 1‒4, black, ovoid, 5‒5.5 mm long, appressed pubescent or velvety pubescent.
2n = 30.
Nancy Khan