Melampodium longicorne

A. Gray

Pl. Nov. Thurb. 321. 1854.

Treatment appears in FNA Volume 21. Treatment on page 36. Mentioned on page 35.

Annuals, 10–60+ cm. Leaf-blades lance-elliptic or oblanceolate to lance-linear, 25–50+ × 3–12+ mm, lengths 3–4 (–6+) times widths, margins ± dentate or entire. Peduncles 4–30+ mm. Outer phyllaries 5, connate 0–1/6 their lengths, ovate to elliptic, 4–6+ mm. Ray-florets 7–12; corollas yellow, laminae oblongelliptic, 1.2–1.5+ × 0.7–1+ mm. Disc-florets 8–10+. Fruits 3–3.5+ mm. 2n = 60.


Phenology: Flowering Aug–Oct.
Habitat: Sandy, gravelly, or loamy soils
Elevation: 1200–1500 m

Distribution

V21-68-distribution-map.gif

Ariz., N.Mex., Mexico (Chihuahua), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Melampodium longicorne"
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 +
A. Gray +
decurrent +
compound +  and simple +
lobed;rhombic;ovate;rhombic;ovate;linear-oblong;linear;lanceolate;deltate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
8 +  and 20 +
obovoid +  and more or less prismatic +
fertile +  and bisexual +
Ariz. +, N.Mex. +, Mexico (Chihuahua) +  and Mexico (Sonora) +
1200–1500 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Sandy, gravelly, or loamy soils +
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 +
1.2mm;1.5mm +
oblongelliptic +
0.7mm;1mm +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
sessile +  and petiolate +
deltate +
entire +  and dentate +
ovate +  and elliptic +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-carpellate +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (3 cm30 mm <br />0.03 m <br />) +
tuberculate +
hardened +, coriaceous +  and scarious +
Flowering Aug–Oct. +
8 +  and 25 +
Pl. Nov. Thurb. +
bearing subulate enations +, hairy +  and bristly +
convex;conic +
exalbuminous +
prostrate +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Melampodium longicorne +
Melampodium +
species +
campanulate +
toothed +  and entire +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +