Monographs Details: Castilleja sessiliflora Pursh
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Species Description - Soft-hairy perennial; stems usually clustered, simple, 1–4 dm, very leafy; principal cauline lvs 3–5 cm, cleft to below the middle into 3 lance-linear divergent lobes, the middle lobe sometimes again cleft; spikes dense, 3–5 cm; bracts like the lvs but somewhat smaller, green or sometimes pink-tipped; cal 25–40 mm, cleft to about the middle, each half also cleft into 2 linear-attenuate segments 8–14 mm; cor curved, exserted from the bracts, purplish to yellow or white, 35–55 mm, the galea 9–12 mm, the lobes of the lower lip 5–6 mm; 2n=24. Dry prairies and plains; Wis. and n. Ill. to Sask., s. to Mo., Tex., and Ariz. May–July.
Common Names:downy paintbrush