Yam
Scientific Name: Dioscorea macrostachya Benth.
Synonym: Dioscorea mexicana, Testudinaria macrostachya
Family: Dioscoreaceae
Dioscorea macrostachya, dormant, at the Boyce-Thompson Arboretum greenhouse in mid June
USDA: 10b-12
Sun Exposure: Light shade, keep the caudex in the shade
Origin: Southern Mexico to northern South America
Growth Habits: Caudiciform vine, leaves up to 5 inches long and wide (12 cm)
Watering Needs: Moderate to regular water
Propagation: Seeds, difficult from cuttings
Blooming Habits:
The Dioscorea elephantipes is dioecious (male and female flowers are produced on different plants). The 0.2 inches wide (4 mm), greenish-yellow flowers are insignificant.
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