Flora of North America species comparison

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Chrysothamnus viscidiflorus subsp. planifolius
Photo is of parent taxon

yellow rabbitbrush
Habit Plants 10–25 cm.
Stems

glabrous (puberulous).
Leaf

blades ascending to spreading, green, 1-nerved, narrowly lanceolate, (10–)14–20 × 1–2 mm, flat, not twisted, margins obscurely involute, entire, not noticeably ciliate, apices cuspidate, faces glabrous.
Involucres

cylindric to campanulate, (4–)5–5.6 mm.
Disc florets

3–4(–5);

corollas 3.5–4.5 mm, lobes 1.4–1.7 mm.
Phyllaries

14–18 in 3–4 series, in spirals or weak vertical ranks, stramineous, green to brown subapical patches obscure midnerves evident distally or obscure, ± convex or weakly keeled, obovate to oblong or spatulate, unequal, margins scarious, eciliate or distally obscurely ciliolate, faces glabrous.
Heads

in broad, rounded, corymbiform arrays.
2n

= 18.

Chrysothamnus viscidiflorus subsp. planifolius
Phenology Flowering late summer–fall.
Habitat Dry sandy soils, sparse juniper slopes
Elevation 1600+ m (5200+ ft)
Distribution
from FNA
AZ
[BONAP county map]
Source FNA vol. 20, p. 192.
Parent taxa Asteraceae > tribe Astereae > Chrysothamnus > Chrysothamnus viscidiflorus
Sibling taxa
C. viscidiflorus subsp. axillaris, C. viscidiflorus subsp. lanceolatus, C. viscidiflorus subsp. puberulus, C. viscidiflorus subsp. viscidiflorus
Name authority L. C. Anderson: Madroño 17: 223, fig. 2c. (1964)
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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