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Stephanophysum longifolium (ACANTHACEAE)

Image: Habit

Stephanophysum
Photo: Robert Whyte

Erect, perennial herb, or subshrub to 1 m high. Branches 4-angled, not hairy. This is a new and emerging weed becoming very widespread throughout Enoggera Creek. Widely cultivated as an ornamental plant throughout the tropics and as an indoor plant in Europe and North America. Native of Brazil.

Leaves with petioles around 2 cm long; lamina ovate, to 8 cm long, bright green above, paler below.

Image: Foliage


Stephanophysum
Photo: Robert Whyte

Inflorescence from the leaf axils. Corolla bright red, throat yellow internally with red venation,

Fruit is a capsule 13-14 mm long, with glands and hairs present, 5-13-seeded, each seed around 2.5 mm diameter, with a well-developed hook.

Naturalised in Bellingen (North Coast) and in Queensland. Also naturalised throughout many of the Pacific islands.