©The World Botanical Associates Web Page
Prepared by Richard W. Spjut
February 2014


Corethrogyne filaginifolia
Kern Co., CA: Breckenridge Mt.23 May 2012

Trees and Shrubs of Kern County (February 2014)

Corethrogyne filaginifolia (Aster filaginifolia Hooker & Arnott 1833) Nuttall 1840 [includes var. brevicula (Greene) Canby, var. glomerata Hall.. California aster, Glandular cud-weed. Perennial or subshrub to 1 m; stems ascending near base, or erect, densely leafy, white hairy; leaves alternate, generally widest above mid region, <10× longer than wide, 1–7 cm long, green or  white hairy when young, often glandular; flowers Jul–Nov; flower-scapes with reduced leaves, 5–10 cm or more long, often with right angle branches in the upper third of the main axis; flower heads generally widest in mid region, involucral bracts numerous (30–90), conspicuously imbricate in up to 9 graduated ranks,  spreading in fruit, the whitish portion gradually widened from base to about the upper fifth, the green portion abruptly tapered to a sharp point;  ray flowers white, pink to purple, sterile, 10–40+; disk flowers yellow, 12–120+; cypselae cylindric or wider towards apex, 5–7 ribbed, terminally bearing numerous minutely barbed capillary bristles, 3–8 mm. Southwestern Oregon to northern Baja California below 8,000 ft, generally west of the desert regions.  Type from California.  Kern Co.: “Scarce at higher elevations in the Douglas oak woodland from the Greenhorn Range to the Tehachapi Mountains” (Twisselmann), 488–2,255 m (CCH). Corethrogyne filaginifolia Herbaceous Alliance proposed (Magney 2010), Michener and Bi-Centennial sections of the Tejon Ranch Conservancy.



Pruski. J.F. and R.L. Hartman. 2012. Synopsis of Leucosyris, including synonymous Arida (Compositae: Astereae).  Phytoneuron 98: 1–15.