Flora of North America species comparison

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Encelia actoni

Acton encelia
Habit Shrubs, 50–150 cm.
Stems

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

cauline;

petioles 6–12 mm;

blades silvery green, ovate to deltate, 25–40 mm, apices acute, faces ± silvery-canescent.
Peduncles

canescent.
Involucres

8–14 mm.
Ray florets

14–25;

corolla laminae 10–25 mm.
Disc corollas

yellow, 5–6 mm.
Phyllaries

ovate.
Heads

borne singly.
Cypselae

5–7 mm;

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

= 36.

Encelia actoni
Phenology Flowering Feb–Jul.
Habitat Open areas, rocky slopes, roadsides
Elevation 800–1500 m (2600–4900 ft)
Distribution
from FNA
CA; NV; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

The epithet actoni (sometimes spelled actonii) is from a place name (Acton, Los Angeles County, California); actoni is correct.

(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. californica, E. farinosa, E. frutescens, E. nutans, E. resinifera, E. scaposa, E. virginensis
Synonyms E. frutescens var. actoni, E. virginensis subsp. actoni
Name authority Elmer: Bot. Gaz. 39: 47. (1905)
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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