Difference between revisions of "Barkleyanthus"

H. Robinson & Brettell

Phytologia 27: 407. 1974.

Common names: Jarilla
Etymology: For Theodore M. Barkley, 1934–2004, North American botanist
Treatment appears in FNA Volume 20. Treatment on page 614. Mentioned on page 541.
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|tribe=Asteraceae tribe Senecioneae
 
|tribe=Asteraceae tribe Senecioneae
 
|genus=Barkleyanthus
 
|genus=Barkleyanthus

Latest revision as of 20:00, 5 November 2020

Shrubs, 100–200[–400+] cm (usually glabrous, sometimes sparsely arachnose or glabrate). Stems usually 1, erect to lax. Leaves cauline; alternate (clustered distally); weakly petiolate; blades weakly 3-nerved, lance-elliptic or lanceolate to lance-linear, margins obscurely dentate to subentire or entire, faces usually glabrous. Heads radiate, in cymiform or paniculiform arrays (crowded in terminal and axillary clusters). Calyculi 0 or of 1–2+ bractlets. Involucres hemispheric or campanulate to weakly turbinate, 5–8 mm diam. Phyllaries persistent, 5–8+ in (1–)2 series, erect, distinct, elliptic or oblong to obovate, equal, margins ± scarious. Receptacles flat to convex, deeply foveolate (margins of sockets raggedly toothed), epaleate. Ray florets (3–)5(–8), pistillate, fertile; corollas yellow (laminae linear-elliptic). Disc florets 14–25+, bisexual, fertile; corollas yellow, tubes longer than to equaling narrowly funnelform throats, lobes 5, recurved, lance-linear; style branches: stigmatic areas continuous, apices ± dilated-truncate. Cypselae ± prismatic to obpyramidal, 5-nerved, strigillose to hirtellous; pappi persistent, of 60–80(–120), white, barbellulate bristles. x = 30.

Distribution

sw United States, Mexico, Central America.

Discussion

Species 1.

Selected References

None.