Botanical name: Argostemma courtallense Family: Rubiaceae (Coffee family)
Synonyms: Argostemma connatum
South-Indian Argostemma is an erect herb with a tuberous root stock. Leaves are up to 8 cm across, few, round, heart-shaped at base, hairy above. Leaf-stalks are 0-2 cm, stipule 8 mm long, ovate, entire. Flowers are borne in cymes 1-3 cm across, at branch ends. Peduncles are 3-6 cm long, 1-3 together. Flowers are few, 1 cm long, stalked, sepal tube turbinate, sepals 4, ovate. Flower-tube is broad, hairless, petals 4, ovate, white. Stamens are 4, not protruding, anthers lanceshaped, ovary 2-celled; ovules many; style slender, stigma terminal, spherical.
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The flower labeled South-Indian Argostemma is ...