Melampodium perfoliatum

(Cavanilles) Kunth in A. von Humboldt et al.

in A. von Humboldt et al., Nov. Gen. Sp. 4(fol.): 215. 1818.

,

4(qto.): 474. 1820.

Introduced
Basionym: Alcina perfoliata Cavanilles Icon. 1: 11, plate 15. 1791
Treatment appears in FNA Volume 21. Treatment on page 35.

Annuals, 20–150+ cm. Leaf-blades ± deltate to rhombic-deltate, 40–200+ × 25–150+ mm, lengths 1–2 (–3+) times widths, margins ± toothed or entire. Peduncles 1–10+ cm. Outer phyllaries 5, connate 0–1/6 their lengths, oblong to elliptic, (6–) 12–15+ mm. Ray-florets 8–13; corollas yellow-orange, laminae oblongelliptic, 2.5–5+ × 1.6–3+ mm. Disc-florets 30–45+. Fruits 4–7+ mm. 2n = 22, 24.


Phenology: Flowering year round.
Habitat: Disturbed, usually moist sites
Elevation: 10–50+ m

Distribution

V21-66-distribution-map.gif

Introduced; Calif., Mexico, West Indies (Antilles), Central America

Discussion

Melampodium perfoliatum may be no longer present in California.

Selected References

None.

Lower Taxa

None.
... more about "Melampodium perfoliatum"
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 +
(Cavanilles) Kunth in A. von Humboldt et al. +
decurrent +
Alcina perfoliata +
compound +  and simple +
lobed;rhombic;ovate;rhombic;ovate;linear-oblong;linear;lanceolate;deltate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
yellow-orange +
8 +  and 20 +
obovoid +  and more or less prismatic +
fertile +  and bisexual +
Calif. +, Mexico +, West Indies (Antilles) +  and Central America +
10–50+ m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Disturbed, usually moist sites +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
hemispheric +
2.5mm;5mm +
oblongelliptic +
1.6mm;3mm +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
less deltate;rhombic-deltate +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
entire +  and toothed +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
oblong +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2-carpellate +
persistent +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
tuberculate +
hardened +, coriaceous +  and scarious +
Flowering year round. +
8 +  and 25 +
in A. von Humboldt et al., Nov. Gen. Sp. +
1818 +  and 1820 +
bearing subulate enations +, hairy +  and bristly +
convex;conic +
exalbuminous +
Introduced +
prostrate +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Melampodium perfoliatum +
Melampodium +
species +
campanulate +
toothed +  and entire +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
20 cm200 mm <br />0.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +