Flora of North America species comparison

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Amphipappus fremontii

Amphipappus fremontii var. fremontii

chaffbush, eytelia, Fremont's chaff bush
Photo is of parent taxon

Fremont's chaff bush
Leaves

3–11 mm.

Cypselae

(ray) 3 mm

Young

twigs, peduncles, and leaves glabrous.
2n

= 18.

Amphipappus fremontii

Amphipappus fremontii var. fremontii
Phenology Flowering Mar–May.
Habitat Rocky or sandy soils, ravines, washes, slopes, rock outcrops, canyon walls, cliff faces, usually with other shrubs, especially Ambrosia, Yucca, Ephedra, Atriplex
Elevation (100–)500–1100 m [(300–)1600–3600 ft]
Distribution
map from FNA
AZ; CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
map from FNA
CA; NV
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Occasional, sparsely hirtellous plants may reflect genetic influence of var. spinosus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Parent taxa Asteraceae > tribe Astereae > Amphipappus Asteraceae > tribe Astereae > Amphipappus > Amphipappus fremontii
Sibling taxa
A. fremontii var. spinosus
Subordinate taxa
A. fremontii var. fremontii, A. fremontii var. spinosus
Key
1. Young twigs, peduncles, and leaves glabrous
var. fremontii
1. Young twigs, peduncles, and leaves densely, hirtellous
var. spinosus
Name authority Torrey & A. Gray: Boston J. Nat. Hist. 5: 108. (1845) unknown
Source FNA vol. 20, p. 186. Treatment author: Guy L. Nesom. FNA vol. 20, p. 186. Treatment author: Guy L. Nesom.
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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