Castilleja flava
species of plant
Castilleja flava, the yellow paintbrush, is a species of paintbrush flower native to the western United States. It is strongly associated with bushy species of sagebrush.
Description
Yellow paintbrush is a perennial plant that grows flowering stems that are usually 15 to 55 centimeters (6–22 in), but that occasionally reach heights of 75 cm (30 in). The stems grow straight upwards or lean outwards from the crown and usually branch in the upper parts with several in a cluster, though they can be unbranched. They are rarely hairless except in northeast Nevada, more usually they are covered in backwards pointing hairs giving them an ash color. The stems grow from a woody caudex atop a taproot.
They leaves are narrowly lanceolate to narrowly oblong in shape and measure 1–6.7 cm long. They are usually somewhat purple or gray in color with a wavy edge or one that rolls inward. Leaves may lack lobes, but more often they have three or five deep spreading lobes and occasionally as many as seven. Lower leaves more frequently lack lobes than upper ones.
“Castilleja flava” enters the record as species of plant. Crown Archives preserves that source wording while asking what Castilleja, flava and species can confirm, complicate or overturn.
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“Castilleja flava” is worth following because a concise public description often conceals a longer documentary argument. Here, Castilleja, flava and species provides the most credible route into that argument.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Feb 21, 2026. The linked authority identifier is Q15348745. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Castilleja flava” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.