Bihrmann's

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Family: DIOSCOREACEAE 

 Dioscorea batatas
 


Photo from
University of Connecticut

  
Author:  Joseph Decaisne1854
Family:  Dioscoreaceae
Habitat:  China
Soil:  Mix
Water:  Medium
Sun:  Maximum
Thickness:  60 centimetres
Height:  6 meters
Flower:  Green-White-Yellow
Reproduction:  Seeds/Air-bulbs
Pop names:  Cinnamon vine/yam, Air-potato, Shan-yam, Chinese yam
Synonyms:  Dioscorea oppositifolia, Dioscorea divaricata
Got it from:  Tokyo
Year:  2002

A few dried air-bulbs.
   This member of the Dioscoreaceae family was described by Joseph Decaisne in 1854. Found in China, but spread around the world as a crop. The long caudex will grow well in a well-drained soil, given some water and lots of sun. It can get up to 60 cm in diameter, the vines can reach  6 meters. The flower is white-yellow-greenish.

The leaves are close to D. mexicana, but the caudex are much longer and it get these "air-bulbs":

 It can stand temperatures down to -18 C.