Bur Cucumber is an annual vine that produces long
branching stems that climb over shrubs and fences or trail across the
ground. The stems are hairy, pale green and furrowed. The alternate
leaves have 3-5 palmate lobes and can be 20 cm across. The leaf-stalk
is thick and hairy, and about 13 cm long. The flowers are monoecious,
with separate male and female blooms. The male flowers are in
long-stemmed racemes. Each flower is about 1 cm wide, with a calyx with
five pointed teeth, a whitish, green-veined flower with five lobes, and
a central boss of stamens. The small female flowers are bunched
together on a short stalk, each having its ovary enclosed in a spiny,
hairy fruit; one seed is produced by each flower. The fruit is about
1.3 cm long, green at first but becomes brown with age; it is dispersed
by animals which come into contact with its bristly surface. Bur
Cucumber is native to North America, cultivated elsewhere.
Identification credit: Anil Thakur
Photographed in Shimla, Himachal Pradesh.
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The flower labeled Bur Cucumber is ...