Psathyrotopsis

Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 34: 360. 1927.

Etymology: Genus Psathyrotes and Greek - opsis, appearance
Synonyms: Pseudobartlettia Rydberg
Treatment appears in FNA Volume 21. Treatment on page 380. Mentioned on page 364, 365.
 TaxonIllustrator 
FNA21 P58 Psathyrotopsis scapos.jpegPsathyrotopsis scaposa
Schkuhria pinnata
Bahia absinthifolia
Linda Ann Vorobik
Bee F. Gunn
Barbara Alongi

Perennials, 8–40 cm (sometimes functionally annual; caudices often ± woody). Stems 1–3+ (scapiform), erect, branched from bases or throughout. Leaves mostly basal; alternate; petiolate; blades rounded-deltate, lanceolate, or rhombic, margins crenate, serrate, or subentire, faces ± tomentose and stipitate-glandular. Heads discoid, borne singly or in corymbiform arrays. Involucres campanulate to hemispheric, 4–6 (–10) mm diam. Phyllaries persistent, 8–21 in 2–3 series (lanceolate to linear, subequal, sparsely tomentulose and stipitate-glandular). Receptacles flat, obscurely pitted or knobby, epaleate. Ray-florets 0. Disc-florets 16–50, bisexual, fertile; corollas ochroleucous to bright-yellow, (cylindro-funnelform) tubes much shorter than throats, lobes 5, (erect or spreading) deltate (style-branch appendages subulate to conic, shaggy-papillate). Cypselae narrowly obconic; pappi persistent, of 70–90 unequal bristles in 2–3 series. x = 19.

Distribution

sw United States, Mexico

Discussion

Species 3 (1 in the flora).

... more about "Psathyrotopsis"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
Rydberg in N. L. Britton et al. +
decurrent +
compound +  and simple +
rhombic;lanceolate;rhombic;lanceolate;rounded-deltate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
ochroleucous +  and bright-yellow +
stipitate-glandular +  and hairy +
fertile +  and bisexual +
fertile +  and bisexual +
sw United States +  and Mexico +
Genus Psathyrotes and Greek - opsis, appearance +
stipitate-glandular +  and tomentose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
in corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
campanulate;hemispheric +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
subentire +, serrate +  and crenate +
2-carpellate +
persistent +
aristate +
8 +  and 21 +
in N. L. Britton et al., N. Amer. Fl. +
bearing subulate enations +, hairy +  and bristly +
strother1975a +
distinct +
4 +  and 20 +
exalbuminous +
1 +  and 3 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Pseudobartlettia +
Psathyrotopsis +
Asteraceae (tribe Heliantheae) subtribe Chaenactidinae +
campanulate +  and cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
8 cm80 mm <br />0.08 m <br /> (40 cm400 mm <br />0.4 m <br />) +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
shrub +  and subshrub +