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), Mexico (Baja California Sur), Mexico (Sinaloa), Mexico (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.

"broader" is not a number.

... more about "Encelia farinosa"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
Curtis Clark +
A. Gray ex Torrey in W. H. Emory +
bristlelike +
coroniform +
cuneate +
compound +  and simple +
gray +  and silver +
ovate;lanceolate +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Brittlebush +  and incienso +
brown-purple +  and yellow +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hairy +  and glabrous +
obovate +  and cuneate +
fertile +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +, Mexico (Baja California) +, Mexico (Baja California Sur) +, Mexico (Sinaloa) +  and Mexico (Sonora) +
0–1000 m +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Coastal scrub, stony desert hillsides +
discoid +  and radiate +
in more or less paniculiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
hemispheric +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
triangular +
2-carpellate +
persistent +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Feb–May, Aug–Sep. +
18 +  and 30 +
unequal +  and subequal +
in W. H. Emory, Not. Milit. Reconn., +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
Illustrated +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Encelia farinosa var. phenicodonta +
Encelia farinosa +
species +
expanded +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +