Marsh Henna is an aquatic or semi aquatic perennial
herb closely related to Balsams, 1-2 m tall, with stems soft, often
spongy and rooting at lower nodes. Leaves are alternate or spiral,
stalkless or nearly stalkless, linear-lanceshaped to elliptic,
wedge-shaped at base, sawtoothed at margin, pointed to long-tapering at
tip, 3-12 x 0.8-1.5 cm, greenish above, pale beneath; stipular glands
2, stalkless. Flower-cluster-stalks are 5-8 mm long; bracts
lanceshaped, falling off; flower-stalks 12-15 mm long. Flowers are
borne in in 3-10 flowered in cymes in leaf-axils, white with purple.
Lateral sepals are 4 in 2 pairs; outer pair elliptic to
elliptic-oblong, apiculate; the inner elliptic-inverted-lanceshaped,
blunt. Lower sepal boat-shaped, tapering into a spur. Dorsal petal
obovate, hoodlike; lateral petals 4, free; lower pair oblong; the upper
elliptic to elliptic-obovate. Ovary hairless. Fruit a septicidally
splitting capsular spherical berry, 8-10 mm, red turning purple,
5-seeded. Marsh Henna is found in South India, Indonesia, Laos,
Malaysia, Myanmar, Sri Lanka, Thailand, Vietnam, Cambodia and China.
Flowering: June-October.
Identification credit: Shrishail Kulloli
Photographed in Kerala.
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The flower labeled Marsh Henna is ...