Picradeniopsis

Rydberg ex Britton

Man. Fl. N. States, 1008. 1901.

Etymology: Generic name Picradenia and Greek - opsis, resembling
Treatment appears in FNA Volume 21. Treatment on page 384. Mentioned on page 364, 365, 383, 385.
 TaxonIllustrator 
FNA21 P59 Picradeniopsis opposi.jpegPicradeniopsis oppositifolia
Venegasia carpesioides
Hymenothrix wrightii
Barbara Alongi
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey

Perennials, 3–20+ cm (± rhizomatous, sometimes forming colonies). Stems ± erect or spreading, branched ± throughout. Leaves cauline; all or mostly opposite; petiolate or sessile; blades mostly ternately lobed (blades or lobes lanceolate to lance-linear), ultimate margins entire, faces sparsely to densely scabrellous (hairs white, straight, conic or fusiform, 0.1–0.4 mm) and glanddotted. Heads radiate, borne singly or (3–6) in loose, corymbiform arrays. Involucres turbinate or obconic to ± hemispheric, 5–6+ mm diam. Phyllaries persistent, 6–10 in 1–2 series (reflexed in fruit, distinct, oblanceolate, subequal, herbaceous, margins membranous, not purplish). Receptacles ± convex, ± pitted, epaleate. Ray-florets 3–8, pistillate, fertile; corollas usually yellow, sometimes ochroleucous. Disc-florets 20–40+, bisexual, fertile; corollas yellow to orange (glanddotted), tubes about equaling funnelform to campanulate throats, lobes 5, deltate to lance-deltate. Cypselae narrowly obpyramidal, 4-angled, finely nerved, shaggily hairy (at least at bases) and/or glanddotted; pappi persistent, of 8–10 (distinct) ovate or elliptic to lanceolate or linear-subulate (basally and/or medially thickened, distally and/or laterally scarious) scales in 1 series (weakly, if at all, aristate). x = 12.

Distribution

c, w United States

Discussion

Species 2 (2 in the flora).

According to T. F. Stuessy et al. (1973), among others, Picradeniopsis is closely allied to Bahia. Indeed, the species are often treated as members of Bahia. Where they occur together, the two species of Picradeniopsis may produce more or less sterile hybrids.

Key

1 Cypselae usually gland-dotted, seldom hirsutulous; scales of pappi usually ovate or elliptic to obovate, sometimes lanceolate Picradeniopsis oppositifolia
1 Cypselae seldom gland-dotted, usually hirsutulous; scales of pappi usually lanceolate to linear-subulate Picradeniopsis woodhousei
... more about "Picradeniopsis"
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 ex Britton +
decurrent +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
yellow +  and orange +
stipitate-glandular +  and hairy +
4-angled +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
c +  and w United States +
Generic name Picradenia and Greek - opsis, resembling +
hairy +, glabrous +, stipitate-glandular +, glabrescent +, strigose +, less lanate +  and woolly or hispidulous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
obconic;more or less hemispheric +
sessile +  and petiolate +
deltate +  and lance-deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
aristate +
6 +  and 10 +
Man. Fl. N. States, +
bearing subulate enations +, hairy +  and bristly +
stuessy1973b +
distinct +
8 +  and 10 +
elliptic +  and lanceolate or linear-subulate +
exalbuminous +
spreading +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Picradeniopsis +
Asteraceae (tribe Heliantheae) subtribe Chaenactidinae +
campanulate +
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 />) +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
shrub +  and subshrub +