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, glanddotted. 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 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"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and open +
indeterminate +  and determinate +
John L. Strother +
(Loefling) Kuntze +
decurrent +
Melampodium australe +
compound +  and simple +
lyrate;mostly elliptic;deltate rhombic or ovate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
obovoid +  and more or less prismatic +
fertile +  and bisexual +
Ala. +, Ark. +, D.C. +, Fla. +, Ga. +, La. +, Mass. +, Miss. +, N.C. +, Oreg. +, Pa. +, S.C. +, Tex. +, Va. +, South America +, also in Mexico +, West Indies +, Central America +, Europe +, Asia +, Africa +  and Pacific Islands (Hawaii) +
0–300 m +
glabrescent +  and glabrate +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
compressed;plumply ellipsoid;fusiform +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Disturbed, often sandy sites +
in open , corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hemispheric +
1.3 cm13 mm <br />0.013 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
rudimentary +
Flowering year round, mostly Jul–Aug. +
10 +  and 13 +
Revis. Gen. Pl. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Introduced +  and Illustrated +
erect +  and more or less prostrate +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Acanthospermum australe +
Acanthospermum +
species +
campanulate +
toothed +  and entire +
60 cm600 mm <br />0.6 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +