Acanthospermum australe

(Loefling) Kuntze

Revis. Gen. Pl. 1: 303. 1891

IntroducedIllustrated
Basionyms: Melampodium australe Loefling Iter Hispan., 268. 1758
Treatment appears in FNA Volume 21. Treatment on page 37.

Plants 10–60(–120+) cm. Stems ± procumbent. Leaf blades deltate to ± rhombic or ovate, 13–37 × 7–32 mm, faces sparsely scabrellous to glabrate or glabrescent, gland-dotted. Fruits plumply ellipsoid to fusiform, weakly compressed, 7–9+ mm, 5–7-ribbed, lacking terminal spines, prickles ± uncinate, mostly along ribs. 2n = 22.


Phenology: Flowering year round, mostly Jul–Aug.
Habitat: Disturbed, often sandy sites
Elevation: 0–300 m

Distribution

V21-71-distribution-map.gif

Introduced; Ala., Ark., D.C., Fla., Ga., La., Mass., Miss., N.C., Oreg., Pa., S.C., Tex., Va., South America, also introduced in Mexico, West Indies, Central America, Europe, Asia, Africa, Pacific Islands (Hawaii).

Discussion

Reports of Acanthospermum xanthioides (Kunth) de Candolle from New York are evidently based on specimens of A. australe.

Selected References

None.

Lower Taxa

None.

... more about "Acanthospermum australe"
John L. Strother +
(Loefling) Kuntze +
Melampodium australe +
Ala. +, Ark. +, D.C. +, Fla. +, Ga. +, La. +, Mass. +, Miss. +, N.C. +, Oreg. +, Pa. +, S.C. +, Tex. +, Va. +, South America +, also introduced in Mexico +, West Indies +, Central America +, Europe +, Asia +, Africa +  and Pacific Islands (Hawaii). +
0–300 m +
Disturbed, often sandy sites +
Flowering year round, mostly Jul–Aug. +
Revis. Gen. Pl. +
Introduced +  and Illustrated +
Compositae +
Acanthospermum australe +
Acanthospermum +
species +