Slender herb usually 20–50cm high, branches sparsely hairy.
Weed Category:
Weed:
No
Form or habit:
Herb
Family:
Lamiaceae
Leaf:
Leaves with lamina narrow-ovate to ovate or rhombic, 3–16 x 2–4.5cm, membranous, margins coarsely toothed, surfaces sparsely to moderately hairy and moderately covered sessile glands; petiole 1–6cm long.
Flower conspicuous:
Conspicuous
Flower colour:
White, Lilac
Flower description:
Calyx curved-campanulate, 2.5–4.5mm long. Corolla usually 10–16mm long, white, pale lilac or lilac; upper lip shallowly 4-lobed, recurved. Stamens greatly exserted. Style 5–6cm long, stigma club-shaped and shortly 2-fid. April and October.
Fruit conspicuous:
Conspicuous
Fruit colour:
Brown, Green, Red
Fruit:
Fruit description:
Seeds are not covered by fruit flesh, rather the open petals and uncovered seed after pollination results in seed directly exposed to the environment. Oval seed with a slight taper at the end attached to the base of the petals. Young seed is pale green and white turning red brown and dark brown as seed ripen.
Habitat:
Rainforest.
Distribution
Queensland, New South Wales, New Guinea, Melanesia, Asia.
Food source for:
Toxicity:
No toxicity known
Origin:
Australia, New Guinea, Melanesia, Asia.
Notes:
Seed germination within eight days.
Information sources:
Febjislami S. et al. (2019) Morphological characters, flowering and seed germination of the Indonesian medicinal plant Orthosiphon aristatus. Biodiversitas. 20. 2., PlantNET (2022) Orthosiphon aristatus (Blume) Miq. FloraOnline.
