Emex australis
Ann. Sci. Nat., Bot., sér. 2, 9: 195, plate 7. 1838.
Plants 1–4 (–6) dm. Stems prostrate, decumbent, or ascending, base often reddish, branched proximally. Leaves: ocrea loose, glabrous; petiole (0.5–) 1–8 (–15) cm, glabrous; blade subhastate to elliptic or ovate, 1–10 × 0.5–6 cm, base truncate to cuneate, apex obtuse to acute. Staminate flowers 1–8 per ocreate fascicle; tepals narrowly oblong to oblanceolate, 1.5–2 mm. Pistillate flowers 1–4 per ocreate fascicle; outer tepals ovate to oblong, 4–6 mm in fruit, inner tepals broadly-triangular-ovate, 5–6 mm in fruit, apex mucronate. Fruiting perianths 7–9 × 9–10 mm, spines ascending or spreading, 5–10 mm, base tapering. Achenes 4–6 × 2–3 mm, shiny. 2n = 20.
Phenology: Flowering year-round.
Habitat: Disturbed sites, especially in sandy soils
Elevation: 0-200 m
Distribution
Introduced; Calif., Africa (Republic of South Africa), in West Indies (Trinidad), Europe, Asia (India), Asia (Pakistan), Asia (Taiwan), Africa (Kenya), Africa (Madagascar), Africa (Malawi), Africa (Tanzania), Africa (Zimbabwe), Pacific Islands (Hawaii), Australia
Discussion
Selected References
None.
Lower Taxa
"/2" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.