Castilleja exserta var. venusta

(A. Heller) J. M. Egger

Phytologia 90: 70. 2008.

Endemic
Basionym: Orthocarpus venustus A. Heller Muhlenbergia 2: 141. 1906
Synonyms: Castilleja exserta subsp. venusta (A. Heller) T. I. Chuang & Heckard O. purpurascens var. ornatus Jepson
Treatment appears in FNA Volume 17. Treatment on page 607. Mentioned on page 606.
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Herbs 0.4–2.3 dm. Inflorescences 2–12.5 cm; bracts: distal apices pink, light purple, or yellow- or orange-spotted, 4–5.5 mm, (3–)5(–7)-lobed; lobes linear to narrowly spatulate, 2 × 0.8–1.2 mm. Calyces 16–19 mm; abaxial clefts 6.5–9.5 mm, adaxial 9–13 mm, clefts 40–70% of calyx length, lateral 5.5–8 mm, 34–45% of calyx length. Corollas 20–27 mm; tube 13–15 mm; beak 7–10 mm; abaxial lip deep red-purple proximally, distal 1/4 bright yellow to yellow-orange, becoming orange or red after anthesis, 4–7 mm.


Phenology: Flowering (Mar–)Apr–May(–Jul).
Habitat: Dry sand, desert washes, creosote scrub, saltbush flats.
Elevation: 300–1500 m.

Discussion

Variety venusta is endemic to the western Mojave Desert region of southern California. Typical var. exserta is found east and west of it, in less arid grasslands. In var. venusta, the corolla is consistently different in color pattern and intensity from var. exserta.

Selected References

None.

Lower Taxa

None.
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
(A. Heller) J. M. Egger +
Orthocarpus venustus +
300–1500 m. +
Dry sand, desert washes, creosote scrub, saltbush flats. +
Flowering (Mar–)Apr–May(–Jul). +
Castilleja exserta subsp. venusta +  and O. purpurascens var. ornatus +
Castilleja exserta var. venusta +
Castilleja exserta +
variety +