|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual or perennial herb, 3--30 cm, often mound-shaped; odor turpentine-like. Stem: erect or spreading, generally much-branched. Leaf: basal and cauline, alternate, petioled; blades +- rounded to reniform, entire to toothed, gray or gray-green, generally scaly- or soft-hairy to +- woolly, glandular. Inflorescence: heads discoid, 1; involucre 3--6+ mm diam, bell-shaped or obconic [cylindric]; phyllaries 8--24 in 2 contrasting series, free, +- lanceolate, obovate, or spoon-shaped, deciduous or persistent, tips erect or spreading to reflexed; receptacle flat to convex, smooth or +- pitted, epaleate. Disk Flower: 9--32; corolla +- yellow, tube << cylindric throat, lobes erect, deltate; anther tip +- lanceolate to ovate; style branches rounded-truncate at tip. Fruit: +- cylindric or spindle-shaped to obpyramidal; pappus of 35--150 bristles in 1--4 series, free or basally fused.
Species In Genus: 3 species: southwestern United States, northwestern Mexico. Etymology: (Greek: brittle)
eFlora Treatment Author: Bruce G. Baldwin, adapted from Strother (2006)
Jepson Online Interchange
Key to PsathyrotesPrevious taxon: Prenanthella exigua
Next taxon: Psathyrotes annua
Citation for this treatment: Bruce G. Baldwin, adapted from Strother (2006) 2016. Psathyrotes, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=571, accessed on February 12, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 12, 2016.