Difference between revisions of "Pilostyles thurberi"
Pl. Nov. Thurb., 326. 1854.
Illustrated
Synonyms: Pilostyles covillei Rose
Treatment appears in FNA Volume 6. Treatment on page 184.
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|species=Pilostyles thurberi | |species=Pilostyles thurberi | ||
Latest revision as of 22:20, 5 November 2020
Bracts 4–7, imbricate, circular to ovate, 1–1.5 mm. Flowers brown or maroon, 1.5–2 mm; sepals similar to bracts; stylar column with apex expanded to 1 mm diam., papillose along margins; anthers 15–21, in ring of ca. 3 rows; ovules mostly 120–200. Seeds mostly 120–200. 2n = 60 + 0–1B.
Phenology: Flowering Jan–May.
Habitat: Open desert scrub
Elevation: 100–1000 m
Distribution
Ariz., Calif., Nev., N.Mex., Tex., Mexico.
Discussion
Documented hosts from the flora area are Dalea formosa Torrey, D. frutescens A. Gray, Psorothamnus emoryi Rydberg, and P. polydenius (Torrey) Rydberg (Fabaceae). Other species in these genera apparently serve as hosts in Mexico. The taxonomic limits of Pilostyles thurberi are poorly understood. It is difficult to circumscribe the host range of this taxon.
Selected References
None.
Lower Taxa
None.