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Scale bar 10mm. Copyright CSIRO
Copyright Barry Jago
Male flower. Copyright CSIRO
Male flowers. Copyright CSIRO
Leaves and Flowers. Copyright CSIRO
Dioscorea bulbifera var. bulbifera
Dioscorea bulbifera L. var. bulbifera
Prain, D. & Burkill, I.H. (1914) Journal of the Asiatic Society of Bengal n. ser. 10: 26. Type: ?.
Dioscorea bulbifera L., Species Plantarum 2: 1033(1753), Type: Habitat in Indiis. Dioscorea sativa var. rotunda F.M.Bailey, The Queensland Flora 5: 1615(1902), Type: Wokai, Cooktown, Roth. Dioscorea sativa L., Species Plantarum 2: 1033(1753), Type: Habitat in Indiis.
Aerial Jam; Jam, Aerial; Air Potatoe; Yam, Round; Potatoe, Air; Round Yam; Cheeky Yam; Yam, Cheeky
A slender vine not exceeding a stem diameter of 2 cm.
Leaf blades about 5-22 x 3.8-22 cm. Petioles about 2-12 cm long, thickened, twisted and curved near the base. About 5-7 veins, including the midrib, radiate from the base of the leaf blade. Bulbils about 0.8-1.5 cm diam., often produced on the leafy branches.
Inflorescence up to 37 cm long. Male flowers: Flowers small, about 3-4 mm diam., each flower subtended by 2 green leafy bracts, one about 2 mm long, the other narrower and 1 mm long. Sepals about 3 mm long. Petals about 3 mm long. Stamens 6, anthers white. Female flowers: Flowers about 4 mm long. Staminodes 6. Stigma 3-lobed.
Features not available.
Distribution and Ecology
Occurs in WA, NT, CYP, NEQ and south to coastal central Queensland. Altitudinal range from near sea level to 800 m. Grows in open forest, wet sclerophyll forests, vine thicket and rain forest. Also found in Africa, Asia, Malesia and the Pacific islands.
This species may be poisonous. Austin, D. F. 1998. Poisonous Plants of Southern Florida. (http://www.fau.edu/divdept/science/envsci/poison- pl.html)
This species may have medicinal properties as well as being poisonous. (http://squid2.laughingsquid.net/hosts/herbweb.com /herbage/A8869.htm)
The leaves and stem of this species are regarded as a contraceptive. Cribb (1981).