Adenostemma viscosum J.R.Forst. & G.Forst.

Distribution

Naturalised in Colombia.

Conservation

IUCN Red List Assessment (2021): LC.

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/138783248/138783277

Conservation

LC - least concern

Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005

Morphology General Habit

Erect to semi-procumbent herb to 1.3 m; stem fleshy, glabrous or sparsely pubescent, sometimes rooting from lower nodes.

Morphology Leaves

Leaves petiolate, petiole 0.7–4 cm, blade ovate to rhomboid, 2–15(–22) cm long, 1–7(–12.5) cm wide, base attenuate to cuneate, sometimes forming narrow wings along petiole, margins crenulate to serrate, apex obtuse to acute, glabrous or sub-glabrous, 3-veined from base.

Morphology Reproductive morphology Inflorescences

Inflorescence bracts 0.6–5 cm long at nodes of inflorescence branches.

Morphology Reproductive morphology Inflorescences Capitulum

Capitula few to numerous, ± 3–5 mm long, 4–5 mm diameter when mature; stalks of individual capitula 1.2–2.5 cm, glandular-pubescent; phyllaries 2–3 mm long, 0.5–0.75 mm wide, flat, apex obtuse to acute, margins entire or ciliate, basally pubescent.

Morphology Reproductive morphology Flowers Florets

Florets ± 30–42; corolla white, 1–1.5 mm long, basally wider, then narrowing into tube before expanding again into campanulate limb with 3–4(–5) (variable within capitulum) short, broadly triangular lobes; anthers free, 3–4(–5), ± 0.2 mm long; style ± 2 mm, bifid for 1/3 of its length, arms swollen.

Morphology Reproductive morphology Fruits

Achenes 2.2–3 mm long, immature or aborted achenes purplish, generally smooth with small glands, becoming brown, tuberculate and glandular with maturity; pappus of 3 pegs, less than 1 mm long.

Habitat

Wet ground, often near streams, and in shade, sometimes actually growing in water; 1–2000 m

Distribution

K1 K3 K4 K6 K7 T1 T2 T3 T4 T5 T6 T7 T8 U1

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation

Predicted extinction risk: not threatened. Confidence: confident

Compositae, C. D. Adams. Flora of West Tropical Africa 2. 1963

Morphology General Habit

A weak-stemmed annual weed of damp shady places, 1-3 ft. high

Morphology Reproductive morphology Flowers Florets

Florets white or pale mauve.