A succulent herb. It varies considerably. It can grow 3-8 m long. It can be climbing. The leaves are alternate and sword shaped. The base of the leaf narrows into a stalk. It narrow to a tip. The leaves are dark green and shiny above and pale underneath. They are 12-48 cm long by 4-12 cm wide. The flowers are almost without stalks. They are in the axils of leaves. They are in round groups 2-6 cm across. The flowers are often red but can be white. The fruit are oblong and hairy at the tip.
A tropical plant. It grows in moist, shady places in humus rich soils. It grows between 50-1,500 m above sea level.
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