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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus: Corethrogyne||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Corethrogyne filaginifolia (Hook. & Arn.) Nutt.
Habit: Perennial herb, subshrub, generally 10--100 cm. Stem: 1--many from base, decumbent to ascending or erect, simple or distally branched, generally densely white-tomentose, sometimes +- glabrous and/or glandular, especially distally. Leaf: cauline at flower, often crowded proximally, alternate; sessile or wing-petioled; blade 10--70+ × 3--19 mm, linear to oblanceolate, spoon-shaped, or ovate, entire or toothed, hairy, sometimes with sunken glands and/or with sessile bead-like and/or stalked glands; distal smaller, sessile, bract-like. Inflorescence: heads radiate, 1 or in cyme-like cluster; involucre hemispheric to bell-shaped, top-shaped, or cylindric, 6--14 × 3--10 mm; phyllaries 30--90+, graduated in 3--9 series, often spreading or with spreading tips, reflexed in age, linear to narrowly lanceolate, stiff-papery to scarious, flat, tips leaf-like in texture, variously hairy and/or glandular; receptacle +- flat or rounded, pitted, with small scale-like projections, glabrous, epaleate. Ray Flower: 10--43, sterile; ray white or pink to purple; style 0. Disk Flower: 12--120+; corolla 4--8 mm, yellow, tube 0.6--1.4 mm, < narrowly cylindric throat, lobes erect, equal, narrowly lanceolate; anther tip awn-like; style branches linear, +- yellow-bristly; appendages blunt to awl-shaped, length 1/3--1/2 stigmatic bands. Fruit: cylindric to obconic, 2--5 mm, 5--7-ribbed, faces puberulent to long-soft-hairy; pappus 3--8 mm, persistent, of 35--65 free, unequal, coarse, minutely barbed bristles in 1--2 series, +- brown to +- red. Chromosomes: 2n=10.
Ecology: Coastal scrub, chaparral, grassland, foothill woodland, forest; Elevation: < 2600 m. Bioregional Distribution: NCo, KR, NCoRO, c&s SN, Teh, CW, SW, w DMoj; Distribution Outside California: southwestern Oregon, northern Baja California. Flowering Time: Jul--Nov
Synonyms: Lessingia filaginifolia (Hook. & Arn.) M.A. Lane var. californica (DC.) M.A. Lane; Lessingia filaginifolia var. filaginifolia
Unabridged Note: Some local populations and regional population systems of corethrogynes present distinct general appearances and the plants have been partitioned into 3 to 7 or more species with various numbers of infraspecific taxa (33 basionyms have been linked to the name Corethrogyne). Lane (1992) referred the plants to a single sp. with 2 varieties within Lessingia, and Saroyan et al. (2000) treated them as a single sp. with two varieties within Corethrogyne. Here, the consolidation is taken one step further and a single, polymorphic sp. with no infraspecific taxa is recognized. For further discussion and additional synonymy, see Saroyan et al.
eFlora Treatment Author: Staci Markos & John L. Strother
Jepson Online Interchange
Previous taxon: Corethrogyne
Next taxon: Cosmos
Citation for this treatment: Staci Markos & John L. Strother 2017. Corethrogyne filaginifolia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=2375, accessed on February 22, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 22, 2017.