Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Wyethia ×cusickii

Wyethia arizonica

hybrid mule's ears, mule-ears

Arizona mule-ears
Habit Plants 20–30(–100) cm.
Basal leaves

blades elliptic or lance-elliptic to lanceolate, 12–30 cm, margins entire, not ciliate, faces usually ± hirsutulous or scabrellous, sometimes glabrate;

cauline leaves mostly smaller, narrower, distal-most usually petiolate, rarely sessile and clasping.
Involucres

turbinate to hemispheric, 18–25+ mm diam.
Ray florets

11–12;

laminae (25–)35–50 mm (abaxially hirsutulous).
Phyllaries

16–34, subequal, ± herbaceous, margins ciliate, faces glabrous or strigillose to hispidulous;

outer 18–22(–30) mm (not or seldom surpassing discs).
Heads

borne singly or 2–4+ in ± corymbiform arrays.
Cypselae

9–10 mm, glabrous.
2n

= 38.

Wyethia ×cusickii

Wyethia arizonica
Phenology Flowering Apr–Jun.
Habitat Meadows, openings in pine, oak, or spruce-fir forests
Elevation 600–2200(–3000) m (2000–7200(–9800) ft)
Distribution
from USDA
[BONAP county map]
from FNA
AZ; CO; NM; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

At the northern margin of the range, glabrate plants with the general habit of Wyethia arizonica (introgressants with W. amplexicaulis) exhibit greater frost-hardiness (a characteristic of W. amplexicaulis) than do other members of the species.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 103.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Wyethia
Sibling taxa
W. amplexicaulis, W. angustifolia, W. arizonica, W. glabra, W. helenioides, W. helianthoides, W. longicaulis, W. mollis
W. amplexicaulis, W. angustifolia, W. glabra, W. helenioides, W. helianthoides, W. longicaulis, W. mollis
Name authority A. Gray: Proc. Amer. Acad. Arts 8: 655. (1873)
Web links 
see all taxa on an iNaturalist map
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers