Spiked Elephant Foot is a herb 2-3 ft tall, with stems
erect, branched, striped. Leaves are nearly stalkless, slightly
stem-clasping, lower leaves oblong-obovate or oblong-spoon-shaped, 7-20
x 1-5 cm, margin entire or remotely sawtoothed. Upper leaves are
oblong-lanceshaped, 2.5-11.5 x 0.5-1.5 cm, narrowed at both ends.
Flowers are borne in branch-end spikes. Flower-heads are in clusters of
1-6. Involucre oblong, 10-12 x about 4 mm; phyllaries dark green,
elliptic-oblong, about 10 x 2 mm, glandular. Florets are white to bluish
purple, nearly
tubular; petals 5, lanceshaped. Achenes linear-oblong, about 6 mm,
10-ribbed, densely bristly, glandular between ribs. Spiked Elephant
Foot is native to Mexico to Tropical America, naturalized in India and
parts of SE Asia.
Identification credit: Raja Ghosh
Photographed in Dalma Wildlife Sanctuary, Jharkhand.
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The flower labeled Spiked Elephant Foot is ...