Flora of North America species comparison

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Chrysothamnus viscidiflorus subsp. viscidiflorus
Photo is of parent taxon

sticky flower rabbitbrush, sticky-leaf rabbitbrush, yellow rabbitbrush
Habit Plants 50–120 cm.
Stems

glabrous.
Leaf

blades (spreading to deflexed) green to bluish or yellowish green, linear to lanceolate, 10–75 × 1–10 mm, usually twisted, flat to sulcate, margins often scabro-ciliate, apices acute, often apiculate, faces glabrous.
Involucres

obconic to narrowly cylindric, 5.5–7 mm.
Disc florets

4–14;

corollas 5–6.5 mm, lobes 1–1.5 mm.
Phyllaries

12–18 in (2–)3(–4) series, in weak vertical ranks, subapical green patches often present, midnerves obscure to evident distally or throughout, usually keeled, lanceolate to elliptic, unequal, margins scarious, eciliate or ciliolate, apices slightly thickened distally, faces glabrous.
Heads

in congested cymiform arrays.
2n

= 18, 27, 36, 45, 54.

Chrysothamnus viscidiflorus subsp. viscidiflorus
Phenology Flowering summer–fall.
Habitat Alpine taluses
Elevation 900–4000 m (3000–13100 ft)
Distribution
from FNA
AZ; CA; CO; ID; MT; NE; NM; NV; OR; SD; UT; WA; WY
[BONAP county map]
Discussion

Diploids of subsp. viscidiflorus with relatively fewer florets per head and narrower involucres have been called var. stenophyllus (L. C. Anderson 1980).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 193.
Parent taxa Asteraceae > tribe Astereae > Chrysothamnus > Chrysothamnus viscidiflorus
Sibling taxa
C. viscidiflorus subsp. axillaris, C. viscidiflorus subsp. lanceolatus, C. viscidiflorus subsp. planifolius, C. viscidiflorus subsp. puberulus
Synonyms C. viscidiflorus var. latifolius, C. viscidiflorus subsp. pumilus, C. viscidiflorus var. stenophyllus
Name authority unknown
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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