Pseudoconyza viscosa (Mill.) D'Arcy

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

Morphology General Habit

Annual herb 0.3–1.2 m tall, sometimes woody at base; stems pilose with long slender hairs and short glandular hairs.

Morphology Leaves

Leaves aromatic, (narrowly) obovate and often lobed, sessile or with a winged petiole, 2–5 cm long, 0.8–3 cm wide (occasionally basal leaves to 16 cm long and 7 cm wide, rarely also large leaves at branch bases), base auriculate with small, narrowly ovate auricles, sometimes decurrent in two lines of lobes similar to the auricles, margins irregularly serrate and often blade pinnatifid proximally, apex acute, pilose and glandular on both surfaces.

Morphology Reproductive morphology Inflorescences Capitulum

Capitula 6–9 mm long, in lax leafy corymbs of several to many heads; stalks of individual capitula 2–20 mm long; phyllaries subequal, the outermost smallest, 2–8 mm long, 0.5–1.2 mm wide, margins scarious and ciliate, acute, pubescent and glandular.

Morphology Reproductive morphology Flowers Florets

Outer florets white to pinkish, 180–280, tube filiform, 3.7–4.2 mm long, minutely toothed; style 4.3–4.6 mm long with glabrous branches; inner florets pinkish purple, 6–12, tube 4–5 mm long, widening only slightly, lobes 0.3–0.5 mm long, glandular; anthers 1.5–1.8 mm long, with very short tails and short ovate distal appendages; style 4.5–5.2 mm long with short papillose branches.

Morphology Reproductive morphology Fruits

Achenes cylindrical, 0.7–1 mm long, pubescent; pappus of white barbellate bristles 4–5 mm long.

Figures

Fig. 72 (page 358).

Habitat

Moist sites along rivers, in forest, also a weed of cultivation; 1–1350 m

Distribution

K1 K3 K4 K7 T1 T2 T3 T4 T5 T6 T7 T8 U1 a widespread weed of the tropics and subtropics, but uncommon in our area

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

Distribution

Found in Boyacá, Colombia.

The Useful Plants of Boyacá project

Morphology General Habit

Herb.

Conservation

Not Evaluated.

Distribution

Introduced in Colombia.

Ecology

Alt. 10 - 200 m.

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution

Adventicia en Colombia; Alt. 10 - 200 m.; Llanura del Caribe.

Morphology General Habit

Hierba

Conservation

No Evaluada

Use Medicines Unspecified Medicinal Disorders

Medicinal (State of the World's Plants 2016).