Flora of North America species comparison

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Amphipappus fremontii

Amphipappus fremontii var. spinosus

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

spiny Fremont's chaffbush
Leaves

3–11 mm.

Cypselae

(ray) 3 mm

Young

twigs, peduncles, and leaves densely hirtellous.

Amphipappus fremontii

Amphipappus fremontii var. spinosus
Phenology Flowering Mar–May.
Habitat Rocky or sandy soils, flats, washes, slopes, rock outcrops, canyon walls, cliff faces, commonly with Larrea, Yucca, Ambrosia
Elevation 500–1300 m (1600–4300 ft)
Distribution
from FNA
AZ; CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; NV; UT
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Young twigs, peduncles, and leaves glabrous
var. fremontii
1. Young twigs, peduncles, and leaves densely, hirtellous
var. spinosus
Source FNA vol. 20, p. 186. FNA vol. 20, p. 186.
Parent taxa Asteraceae > tribe Astereae > Amphipappus Asteraceae > tribe Astereae > Amphipappus > Amphipappus fremontii
Sibling taxa
A. fremontii var. fremontii
Subordinate taxa
A. fremontii var. fremontii, A. fremontii var. spinosus
Synonyms Amphiachyris fremontii var. spinosa, A. spinosus, A. fremontii subsp. spinosus
Name authority Torrey & A. Gray: Boston J. Nat. Hist. 5: 108. (1845) (A. Nelson) Ced. Porter: Amer. J. Bot. 30: 483. (1943)
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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