Flora of North America species comparison

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Encelia virginensis

Virgin River brittlebush, Virgin River encelia
Habit Shrubs, 50–150 cm.
Stems

with slender branches from bases, hairy, developing fissured barks.
Leaves

cauline;

petioles 2–7 mm;

blades gray-green, narrowly ovate to deltate, 12–25 mm, apices acute or obtuse, faces sparsely canescent and strigose.
Peduncles

canescent.
Involucres

9–13 mm.
Ray florets

11–21;

corolla laminae 8–15 mm.
Disc corollas

yellow, 5–6 mm.
Phyllaries

narrowly ovate.
Heads

borne singly.
Cypselae

5–8 mm;

pappi usually 0, rarely of 1–2 bristlelike awns.
2n

= 36.

Encelia virginensis
Phenology Flowering Apr–Jun, Dec.
Habitat Desert flats, rocky slopes, roadsides
Elevation 500–1500 m (1600–4900 ft)
Distribution
from FNA
AZ; CA; NM; NV; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

In the mountains of the eastern Mojave Desert in California, Encelia virginensis may intergrade with E. actoni at higher elevations, probably as a result of hybridization. Plants of E. virginensis in New Mexico may be adventive.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 121.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Encelia
Sibling taxa
E. actoni, E. californica, E. farinosa, E. frutescens, E. nutans, E. resinifera, E. scaposa
Synonyms E. frutescens var. virginensis
Name authority A. Nelson: Bot. Gaz. 37: 272. (1904)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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