Acanthospermum australe

(Loefling) Kuntze

Revis. Gen. Pl. 1: 303. 1891

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

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.

AuthorJohn L. Strother +
Authority(Loefling) Kuntze +
BasionymsMelampodium australe +
DistributionAla. +, 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). +
Elevation0–300 m +
HabitatDisturbed, often sandy sites +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorBarbara Alongi +
Introducedtrue +
PhenologyFlowering year round, mostly Jul–Aug. +
Publication titleRevis. Gen. Pl. +
Publication year1891 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V19-20-21/V21 71.xml +
SynonymsCompositae +
Taxon familyAsteraceae +
Taxon nameAcanthospermum australe +
Taxon parentAcanthospermum +
Taxon rankspecies +
VolumeVolume 21 +