Melampodium strigosum

Stuessy

Rhodora 74: 51. 1972.

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

Annuals, 5–35+ cm. Leaf-blades oblanceolate to oblong-linear, 15–55+ × 3–12+ mm, lengths 4–6+ times widths, sometimes pinnately 2–4-lobed, ultimate margins ± dentate or entire. Peduncles 0–3 (–11+) mm. Outer phyllaries 5, connate 0–1/6 their lengths, lance-elliptic, 3–6 mm. Ray-florets 5–8; corollas yellow, laminae oblong-ovate, 0.6–1.1+ × 0.5–10.8+ mm. Disc-florets 5–8+. Fruits 2.2–3 mm. 2n = 40.


Phenology: Flowering Aug–Sep.
Habitat: Openings in pine forests
Elevation: 1200–1700 m

Distribution

V21-69-distribution-map.gif

Ariz., Colo., Tex., Mexico

Discussion

Specimens of Melampodium strigosum have been misidentified as M. hispidum Kunth, a synonym of M. sericeum (see T. F. Stuessy 1972). The station for M. strigosum in Colorado is ca. 1400 km distant from stations in Arizona and Texas.

Selected References

None.

Lower Taxa

None.
... more about "Melampodium strigosum"
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 +
Stuessy +
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. +, Colo. +, Tex. +  and Mexico +
1200–1700 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Openings in pine forests +
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 +
0.6mm;1.1mm +
oblong-ovate +
0.5mm;10.8mm +
1.5 cm15 mm <br />0.015 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
2-4-lobed;oblanceolate;oblong-linear +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-carpellate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
tuberculate +
hardened +, coriaceous +  and scarious +
Flowering Aug–Sep. +
8 +  and 25 +
bearing subulate enations +, hairy +  and bristly +
convex;conic +
exalbuminous +
prostrate +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Melampodium strigosum +
Melampodium +
species +
campanulate +
toothed +  and entire +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
5 cm50 mm <br />0.05 m <br /> (35 cm350 mm <br />0.35 m <br />) +