Encelia farinosa

A. Gray ex Torrey in W. H. Emory
in W. H. Emory, Not. Milit. Reconn., 143. 1848.
Common names: Brittlebush incienso
Illustrated
Synonyms: Encelia farinosa var. phenicodonta S. F. Blake) I. M. Johnston
Treatment appears in FNA Volume 21. Treatment on page 121. Mentioned on page 119, 122.

Shrubs, 30–150 cm (sap fragrant). Stems branched distally, tomentose, developing smooth barks. Leaves cauline (clustered near stem tips); petioles 10–20 mm; blades silver or gray, ovate to lanceolate, 20–70 mm, apices obtuse or acute, faces tomentose. Heads in paniculiform arrays (branching among heads mainly distal). Peduncles glabrous except near heads (± yellow). Involucres 4–10 mm. Phyllaries lanceolate. Ray florets 11–21; corolla laminae 8–12 mm. Disc corollas yellow or brown-purple, 5–6 mm. Cypselae 3–6 mm; pappi 0. 2n = 36.


Phenology: Flowering Feb–May, Aug–Sep.
Habitat: Coastal scrub, stony desert hillsides
Elevation: 0–1000 m

Distribution

V21-297-distribution-map.gif

Ariz., Calif., Nev., Mexico (Baja California, Baja California Sur, Sinaloa, Sonora).

Discussion

Plants of Encelia farinosa with brown-purple disc corollas, found along the Colorado and Salt rivers, and common in Baja California, are var. phenicodonta. Plants with substrigose leaves, capitulescences branched toward bases rather than distally, and ray florets reduced in both size and number are most often hybrids and backcrosses between E. farinosa and E. frutescens. P. A. Munz (1959) indicated that I. L. Wiggins had reported var. radians Brandegee ex S. F. Blake as occurring in southeastern California; that variety is known only from Baja California.

Selected References

None.

Lower Taxa

None.

... more about "Encelia farinosa"
Curtis Clark +
A. Gray ex Torrey in W. H. Emory +
Brittlebush +  and incienso +
Ariz. +, Calif. +, Nev. +, Mexico (Baja California +, Baja California Sur +, Sinaloa +  and Sonora). +
0–1000 m +
Coastal scrub, stony desert hillsides +
Flowering Feb–May, Aug–Sep. +
in W. H. Emory, Not. Milit. Reconn., +
Illustrated +
Encelia farinosa var. phenicodonta +
Encelia farinosa +
species +