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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus: Chaetadelpha||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Chaetadelpha wheeleri S. Watson
Habit: Perennial herb from stout rhizome, glabrous; sap milky. Stem: 2--many, ascending to +- erect, much-branched, 1.5--4 dm. Leaf: alternate, basal 1--5 cm, linear to lance-linear, entire, withered at flower; cauline linear or reduced to scales. Inflorescence: heads liguliflorous, generally 1 at stem and branch tips; involucre 11--14 mm, narrowly cylindric; phyllaries in 2 series, outer scale-like, inner 5, equal, linear, margin membranous; receptacle +- flat, epaleate. Flower: 5; ligules pale lavender to white, generally not readily withering. Fruit: 8--12 mm, cylindric, 5 faces separated by ridges, smooth, glabrous, light tan; pappus persistent, of 5 stiff awns and 35--50+ shorter bristles in 1--2 series, all +- fused basally in groups that alternate with awns. Chromosomes: 2n=18.
Ecology: Sand dunes, alkali flats, creosote-bush and sagebrush scrub; Elevation: 800--1800 m. Bioregional Distribution: SNE, n DMoj; Distribution Outside California: southeastern Oregon, western Nevada. Flowering Time: May--Sep
Unabridged Note: Reports of Chaetadelpha wheeleri from Idaho are unverified.
eFlora Treatment Author: L.D. Gottlieb
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Chaetadelpha
Next taxon: Chaetopappa
Citation for this treatment: L.D. Gottlieb 2017. Chaetadelpha wheeleri, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=1994, accessed on February 20, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 20, 2017.