Pilostyles thurberi

A. Gray

Pl. Nov. Thurb.,326. 1854

Synonyms: Pilostyles covillei
Found in FNA Volume 6. Treatment on page 184.
FNA6 P20 Passiflora incarnata.jpeg
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


Ariz., Calif., Nev., N.Mex., Tex., Mexico.


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.



Facts about "Pilostyles thurberi"
AuthorGeorge Yatskievych +
Elevation100–1000 m +
HabitatOpen desert scrub +
IllustratorJohn Myers +
PhenologyFlowering Jan–May. +
ReferenceNone +
SynonymPilostyles covillei +
Taxon namePilostyles thurberi +
Taxon parentPilostyles +
Taxon rankspecies +
VolumeVolume 6 +