OregonFlora: Ericameria parryi vs. Ericameria

	Ericameria parryi	Ericameria
	Nevada rabbitbrush	goldenbush, rabbitbrush
Habit		Shrubs or subshrubs usually evergreen, sometimes deciduous (if very cold); taprooted.
Stems		usually erect, sometimes decumbent; much branched.
Leaves		cauline, alternate, often crowded, filiform to spatulate, glabrous to tomentose, often stipitate-glandular or gland-dotted; glands pustulose or in circular pits, petiolate or sessile.
Inflorescences		cyme-, panicle-, or raceme-like arrays, or heads solitary, usually well branched.
Involucres		campanulate or obovoid.
Receptacles		flat to convex, pitted; paleae 0.
Ray florets		pistillate; corollas white or yellow.
Disc florets		bisexual; corollas cylindric; well exceeding involucres; tubes < throats; throats funnelform or campanulate; lobes triangular; styles usually well exserted.
Phyllaries		in 2–7 series; erect or with spreading or recurved tips, subequal or the outer gradually shorter, glabrous to tomentose or stipitate-glandular, sometimes resinous.
Fruits		angled or cylindric, ellipsoid, or obconic, 5–12-ribbed, glabrous or pubescent, sometimes gland-dotted, pappi of numerous, usually persistent bristles in 1–3 series, white to reddish.
Heads		radiate or discoid, pedunculate or sessile.
2n		=18.

	Ericameria parryi	Ericameria
Distribution	[WildflowerSearch map] [BONAP county map]	[BONAP county map]
Discussion		Western North America. 36 species; 9 species treated in Flora. Based on molecular phylogenetic studies (Roberts & Urbatsch 2003), Ericameria combines species that in earlier floras were placed in Chrysothamnus and Haplopappus. Haplopappus is now recognized only from South America, while in Oregon, Chrysothamnus is reduced to two species.
Source		Flora of Oregon, volume 2, page 246 Kenton Chambers
Sibling taxa	E. arborescens, E. bloomeri, E. discoidea, E. greenei, E. nana, E. nauseosa, E. resinosa, E. suffruticosa
Subordinate taxa	E. parryi var. nevadensis	E. arborescens, E. bloomeri, E. discoidea, E. greenei, E. nana, E. nauseosa, E. parryi, E. resinosa, E. suffruticosa
Web links	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Ericameria

Nevada rabbitbrush

goldenbush, rabbitbrush

Habit

Shrubs or subshrubs usually evergreen, sometimes deciduous (if very cold); taprooted.

Stems

usually erect, sometimes decumbent; much branched.

Leaves

cauline, alternate, often crowded, filiform to spatulate, glabrous to tomentose, often stipitate-glandular or gland-dotted;

glands pustulose or in circular pits, petiolate or sessile.

Inflorescences

cyme-, panicle-, or raceme-like arrays, or heads solitary, usually well branched.

Involucres

campanulate or obovoid.

Receptacles

flat to convex, pitted;

paleae 0.

Ray florets

pistillate;

corollas white or yellow.

Disc florets

bisexual;

corollas cylindric; well exceeding involucres;

tubes < throats;

throats funnelform or campanulate;

lobes triangular;

styles usually well exserted.

Phyllaries

in 2–7 series; erect or with spreading or recurved tips, subequal or the outer gradually shorter, glabrous to tomentose or stipitate-glandular, sometimes resinous.

Fruits

angled or cylindric, ellipsoid, or obconic, 5–12-ribbed, glabrous or pubescent, sometimes gland-dotted, pappi of numerous, usually persistent bristles in 1–3 series, white to reddish.

Heads

radiate or discoid, pedunculate or sessile.

=18.

Ericameria

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

Western North America. 36 species; 9 species treated in Flora.

Based on molecular phylogenetic studies (Roberts & Urbatsch 2003), Ericameria combines species that in earlier floras were placed in Chrysothamnus and Haplopappus. Haplopappus is now recognized only from South America, while in Oregon, Chrysothamnus is reduced to two species.

Source

Flora of Oregon, volume 2, page 246
Kenton Chambers

Sibling taxa