Difference between revisions of "Acanthospermum humile"

(Swartz) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 522. 1836.

Introduced
Basionym: Melampodium humile Swartz Prodr., 114. 1788
Treatment appears in FNA Volume 21. Treatment on page 37.
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Latest revision as of 15:28, 15 December 2020

Plants 10–20 (–30+) cm. Stems decumbent to erect. Leaf-blades oval to lyrate, 10–30 (–45) mm, faces ± pilosulous to sparsely sericeous, glanddotted. Fruits strongly compressed, ± cuneate, 2–3 (–4) mm, usually 3-ribbed, terminal spines 2, divergent, 2–3 (–4) mm, often 1 ± uncinate, prickles ± uncinate, mostly along 2 ribs and around apices.


Phenology: Flowering all year.
Habitat: Disturbed, often sandy sites
Elevation: 0–10+ m

Distribution

V21-73-distribution-map.gif

Introduced; Ala., Fla., S.C., West Indies, also in Central America, South America

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Acanthospermum humile"
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 +
(Swartz) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
decurrent +
Melampodium humile +
3 cm30 mm <br />0.03 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oval +  and lyrate +
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. +, Fla. +, S.C. +, West Indies +, also in Central America +  and South America +
0–10+ m +
less pilosulous +  and sparsely sericeous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
dispersed +
cuneate;compressed +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 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 +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
rudimentary +
Flowering all year. +
10 +  and 13 +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Introduced +
decumbent +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Acanthospermum humile +
Acanthospermum +
species +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
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 />) +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +