Diaperia prolifera var. prolifera

Treatment appears in FNA Volume 19. Treatment on page 463.

Plants mostly grayish green, 3–15 cm, loosely lanuginose. Stems mostly 2–10; branches ± equal, distal mostly spreading to ascending. Leaves: largest 9–15 × 2–4 mm; capitular leaves usually ± spreading, scarcely involucral, not or scarcely carinate, pliant to somewhat rigid. Heads 4–40+ in largest glomerules. Receptacles broadly conic, 0.4–0.6 mm, heights mostly 0.5–0.7 times diams. Pistillate paleae: longest 3.3–4 mm.


Phenology: Flowering and fruiting (Apr–)May–Jun(–Sep).
Habitat: Dry, open, often disturbed silty to clay soils, barren to grassy, brushy, or wooded slopes, plains, prairies, toward s and e usually over carbonate (limestone, chalk)
Elevation: 90–1500(–2200) m

Distribution

V19-772-distribution-map.gif

Ala., Ark., Colo., Kans., La., Miss., Mo., Mont., Nebr., N.Mex., Okla., S.Dak., Tex., Wyo.

Discussion

Variety prolifera occupies a broad crescent from western South Dakota and southeastern Montana to northeastern New Mexico, central and eastern Texas (nearly to Mexico), southern Missouri, and southwestern Arkansas, with outliers in chalk prairies of southern Mississippi and southern Alabama. A specimen of it (mixed with other Californian Filagininae) collected in 1903 is purportedly from southern California; it might represent an introduction that did not persist or an accidental admixture from another collection.

Selected References

None.

Lower Taxa

None.
spreading +  and erect to somewhat +
scarious +
mostly ovate +  and lanceovate or linear +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
James D. Morefield +
(Nuttall ex de Candolle) Nuttall +
decurrent +
Evax prolifera +
compound +  and simple +
oblanceolate;obovate +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
spatulate;oblanceolate;oblong flat +
rigid +  and pliant to somewhat +
actinomorphic +
red-tipped +, purplish +, yellow +  and whitish +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
light +  and dark-brown +
obcompressed +
mostly spreading +  and ascending +
Ala. +, Ark. +, Colo. +, Kans. +, La. +, Miss. +, Mo. +, Mont. +, Nebr. +, N.Mex. +, Okla. +, S.Dak. +, Tex. +  and Wyo. +
90–1500(–2200) m +
shiny +  and dull +
papillate +
winged +  and beaked +
dispersed +
incurved +  and spreading +
Dry, open, often disturbed silty to clay soils, barren to grassy, brushy, or wooded slopes, plains, prairies, toward s and e usually over carbonate (limestone, chalk) +
racemiform +, spiciform +  and pseudo-polytomous +
singly +  and aggregated +
indeterminate +
2-3 times diams +
visible-surpassing +
homogamous +  and heterogamous +
cylindric +  and more or less ellipsoid +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
each +  and sessile +
inconspicuous +
sessile +  and petiolate +
9mm;15mm +
cauline +  and basal +
largest +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
rarely lanceovate +  and lanceolate +
2-carpellate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
Flowering and fruiting (Apr–)May–Jun(–Sep). +
subequal +  and unequal +
Trans. Amer. Philos. Soc., n. s. +
paleate +  and epaleate +
0.5-0.7 times diams +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
exalbuminous +
Illustrated +  and Endemic +
ascending +  and more or less prostrate +
2 +  and 10 +
appendaged +  and truncate +
papillate +
Evax sect. Diaperia +
Diaperia prolifera var. prolifera +
Diaperia prolifera +
variety +
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +