Trichoptilium

A. Gray in W. H. Emory

in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 97. 1859.

Etymology: Greek tricho- , hairlike, and ptilon, feather, alluding to pappus scales
Treatment appears in FNA Volume 21. Treatment on page 418. Mentioned on page 415, 456.
 TaxonIllustrator 
FNA21 P64 Psathyrotes ann.jpegPsathyrotes annua
Trichoptilium incisum
Balduina angustifolia
Linda Ann Vorobik
Yevonn Wilson-Ramsey
Sheila Flinchpaugh

Annuals or perennials, 3–20 (–30+) cm. Stems erect or ascending, branched from bases or throughout. Leaves basal and cauline; mostly alternate; petiolate; blades oblanceolate to spatulate or ovate, margins usually sharply and coarsely toothed or lobed, faces sparsely floccose to densely woolly, glanddotted. Heads discoid, borne singly. Involucres hemispheric to campanulate, 6–12 mm diam. Phyllaries persistent, 18–25 in 2+ series (erect or spreading in fruit, distinct, lanceovate to lanceolate, subequal, thin-herbaceous, loosely woolly, the inner more scarious, less woolly). Receptacles convex to conic, smooth or finely pitted, epaleate. Ray-florets 0. Disc-florets 30–100+, bisexual, fertile; corollas yellow, sometimes drying pinkish distally (outer sometimes larger and zygomorphic), tubes much shorter than narrowly funnelform throats, lobes 5, ovate to deltate (equal or unequal). Cypselae obpyramidal, glabrous or shaggily hairy; pappi of 5 scarious, deeply lacerate scales (each seemingly constituted of 8–15+ connate bristles). x = 13.

Distribution

sw United States, nw Mexico

Discussion

Species 1.

Selected References

None.

... more about "Trichoptilium"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
A. Gray in W. H. Emory +
decurrent +
compound +  and simple +
oblanceolate;spatulate or ovate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
pinkish +  and yellow +
hairy +  and glabrous +
obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
sw United States +  and nw Mexico +
Greek tricho- , hairlike, and ptilon, feather, alluding to pappus scales +
sparsely floccose +  and densely woolly +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric;campanulate +
cauline +  and basal +
ovate +  and deltate +
dentate to pinnatifid or palmatifid +  and entire +
lobed +  and toothed +
connate +  and distinct +
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
unequal +  and subequal +
2-carpellate +
persistent +
18 +  and 25 +
in W. H. Emory, Rep. U.S. Mex. Bound. +
neuter +, styliferous +  and pistillate +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;conic +
lacerate +
exalbuminous +
ascending +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Trichoptilium +
Asteraceae (tribe Heliantheae) subtribe Gaillardiinae +
urceolate +  and campanulate +
dilated +
toothed +  and entire +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
perennial +  and annual +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
shrub +  and subshrub +