Castilleja genevieveana

G. L. Nesom

Phytologia 72: 210. 1992. (as genevievana)

Common names: Genevieve’s paintbrush
Treatment appears in FNA Volume 17. Treatment on page 609. Mentioned on page 578, 610.

Herbs, perennial, 1.5–4.5 dm; from a woody caudex; with a taproot. Stems several, erect or ascending, unbranched or often branched proximally, loosely lanate, hairs spreading to retrorse, flattened, often matted, long, soft, eglandular. Leaves green to gray-green, linear-lanceolate to narrowly oblong, 1.5–7.5 cm, not fleshy, margins plane, involute, 0(–3)-lobed, apex rounded; lobes spreading, linear or filiform, originating from distal 1/3 of blade, apex acute. Inflorescences 2.5–10(–20 in fruit) × 1.5–2.5 cm; bracts proximally pale greenish to green, distally yellow, yellow-orange, or orange, ovate to broadly lanceolate or broadly oblanceolate-obovate, 0–3-lobed; lobes ascending to erect, narrowly lanceolate, medium length, arising near or above mid length, apex rounded to acute. Calyces colored as bracts, 23–27 mm; abaxial and adaxial clefts 10–15 mm, 33–50% of calyx length, deeper than laterals, lateral 4–9 mm, 15–33% of calyx length; lobes oblong to lanceolate or narrowly triangular, apex acute to rounded. Corollas straight or slightly curved, 24–37 mm; tube 15–22 mm; slightly shorter than calyx or usually with beak, sometimes abaxial lip, exserted beyond calyx apices; beak adaxially green to yellowish, 7–15 mm; abaxial lip green or yellowish, reduced, ± inconspicuous, slightly pouched, 1.6–6 mm, less than 50% as long as beak; teeth spreading, yellow or yellow-green, 1–4 mm.

Phenology: Flowering Mar–Jun.
Habitat: Rocky slopes, open stands of juniper, over limestone.
Elevation: 500–900 m.


Castilleja genevieveana is known from eight counties in southwestern Texas and from a small area of adjacent Coahuila, Mexico. The species is likely related to the widespread C. integra and geographically replaces it.

Selected References


Lower Taxa

... more about "Castilleja genevieveana"
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
G. L. Nesom +
Genevieve’s paintbrush +
Tex. +  and Mexico (Coahuila). +
500–900 m. +
Rocky slopes, open stands of juniper, over limestone. +
Flowering Mar–Jun. +
Euchroma +  and Oncorhynchus +
Castilleja genevieveana +
Castilleja +
species +