green rabbitbrush, Nevada rabbitbrush, Parry's goldenbush, Parry's rabbitbrush
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chamisa, common rabbit-brush, gray rabbitbrush, rabbitbrush, rubber rabbitbrush
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Plants 10–100 cm. |
Plants 10–250 cm. |
ascending to erect, greenish when young becoming tan and gray, sometimes fastigiately branched, densely white to grayish tomentose, eglandular. |
erect or ascending to spreading, white to green, fastigiately branched, tomentose. |
(sparse to crowded) erect to ascending or spreading; blades linear to spatulate (plane or concave), 10–80 × 0.5–8(–14) mm, midnerves (sometimes + 2 laterals) evident, apices acute, faces glabrous or gray, greenish, or yellowish tomentose, sometimes viscid, sometimes gland-dotted or stipitate-glandular; axillary leaf fascicles absent. |
(usually crowded) usually ascending to spreading; blades filiform to narrowly oblanceolate (mostly adaxially sulcate to concave), 10–70 × 0.3–10 mm, midnerves mostly evident, apices acute, faces glabrous or tomentose, often gland-dotted (lacking well-defined circular pits); axillary fascicles absent. |
1–10+ mm (bracts 0–3, transitional from distal leaves to phyllaries). |
1–20 mm (bracts usually 0, sometimes 1–5, reduced, scalelike). |
subcylindric, 9–18 × 4–8 mm. |
obconic to subcylindric, 6–16 × 2–4 mm. |
0. |
0. |
5–20; corollas 8–12.5 mm. |
(4–)5(–6); corollas 6–12 mm. |
10–20 in 3–6 series, tan, ovate to lanceolate or elliptic, 5–11+ × 0.7–2 mm, subequal, mostly chartaceous, sometimes herbaceous-tipped, midnerves mostly evident, (margins narrowly membranous, entire, mostly tomentulose, rarely eciliate) apices acuminate to attenuate, abaxial faces usually tomentose, sometimes resinous. |
10–31 in 3–5 series (often in vertical ranks), tan, ovate to lanceolate, 1.5–14 × 0.7–1.5 mm, strongly unequal, mostly chartaceous (mostly keeled), midnerves raised for nearly entire lengths, expanded apically, apices acute to obtuse, abaxial faces resinous. |
usually in congested, racemiform or cymiform clusters, sometimes grouped in paniculiform or thyrsiform arrays, sometimes borne singly. |
in rounded to flat-topped, cymiform arrays (to 12 cm wide). |
tan, narrowly ellipsoid to subturbinate, 3–8 mm, sericeous; pappi off-white to brown, 3.3–7.5 mm. |
tan, turbinate to cylindric or oblanceoloid, 3–8 mm, glabrous or hairy (often ± pilose or sericeous); pappi whitish, 3–13 mm. |
= 18. |
= 18. |
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AZ; CA; CO; ID; MT; NE; NM; NV; OR; UT; WY
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AZ; CA; CO; ID; KS; MT; ND; NE; NM; NV; OK; OR; SD; TX; UT; WA; WY; AB; BC; SK; nw Mexico
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Varieties 12 (12 in the flora). Ericameria parryi is widespread, often abundant, and variable (some authors recognize additional varieties). It is reported to hybridize with E. nauseosa. This treatment is based largely on the extensive research on Ericameria and related taxa by L. C. Anderson (1986). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 21 (21 in the flora). Ericameria nauseosa is widespread, often abundant, and complex. This treatment is based largely on that by L. C. Anderson (1986b). Uncertainty about the specimen used by Pursh to establish E. nauseosa (as Chrysocoma nauseosa) is a possible source of confusion concerning the application of that name (which is in current use) and of the name Chrysothamnus speciosus Nuttall (J. L. Reveal et al. 1999). Anderson divided the species into two informal groups, the “green forms” and the “gray forms.” These two groups were formalized as subspp. nauseosa and consimilis by G. L. Nesom and G. I. Baird (1993), each containing varieties. Ericameria nauseosa is reported to hybridize with other species in the genus, and hybrid and formula names have been applied to them. Their synonymies were more fully summarized by Nesom and Baird. Ericameria ×bolanderi (A. Gray) G. L. Nesom & G. I. Baird, based on Linosyris bolanderi A. Gray is the hybrid between E. discoidea and E. nauseosa (L. C. Anderson and J. L. Reveal 1966). Ericameria ×uintahensis (L. C. Anderson) G. L. Nesom & G. I. Baird, “Uinta rubber rabbitbrush,” based on Chrysothamnus nauseosus subsp. uintahensis L. C. Anderson, is the hybrid between E. nauseosa and E. parryi (L. C. Anderson 1984). Ericameria ×viscosa (D. D. Keck) G. L. Nesom & G. I. Baird, based on Chrysothamnus nauseosus subsp. viscosus D. D. Keck, is the hybrid between E. cuneata and E. nauseosa (L. C. Anderson 1986b). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
1. Heads 1–2(–4) at branch tips; leaves sparsely to densely tomentulose (2800–3700 m, California, Nevada) | var. monocephala |
1. Heads (2–)4–20+ in cymiform, racemiform, sometimes branched and paniculiform or thyrsiform, arrays, sometimes in terminal glomerules, if heads 1–2, leaves glabrous, viscidulous (var. montana); leaves glabrous or hairy (often tomentulose to tomentose) | → 2 |
2. Leaves oblanceolate, 5–14 mm wide (Califor-nia) | var. latior |
2. Leaves linear, linear-spatulate, oblanceolate, or spatulate, 0.5–5 mm wide | → 3 |
3. Leaves abundantly stipitate-glandular (never glabrous or otherwise hairy; California, Nevada) | var. aspera |
3. Leaves glabrous or tomentulose to tomentose, usually eglandular, sometimes viscidulous or sparsely or minutely stipitate-glandular, or gland-dotted | → 4 |
4. Distalmost leaves overtopping arrays | → 5 |
4. Distalmost leaves usually shorter than or equaling (seldom overtopping) arrays | → 10 |
5. Leaves minutely stipitate-glandular | var. parryi |
5. Leaves not stipitate-glandular, sometimes gland-dotted (sessile), glabrous, moderately hairy, tomentose, or viscidulous | → 7 |
6. Leaf faces glabrous, viscidulous. | → 6 |
6. Leaf faces tomentulose, tomentose, or moderately hairy, sometimes gland-dotted | → 8 |
7. Plants 10–20 cm; leaves 20–35 mm; corolla lobes 1.4–1.7; Idaho/Montana border | var. montana |
7. Plants 30–60 cm; leaves 30–50(–80) mm; corolla lobes 1–1.5 mm; Salmon River drain-age, Idaho | E. var. salmonensis |
8. Leaf faces glabrous or puberulent, often minutely stipitate-glandular; florets 8–20 | var. parryi |
8. Leaf faces tomentulose to tomentose, sometimes gland-dotted; florets 5–7(–8) | → 9 |
9. Leaf faces tomentose, eglandular; corollas pale yellow; n Arizona, Colorado, Nebraska, New Mexico, s Utah, Wyoming | var. howardii |
9. Leaf faces densely tomentulose, gland-dotted; corollas clear yellow; Arizona, California, Nevada, Oregon, Utah | var. nevadensis |
10. Leaves 10–15 mm; outer phyllary apices sometimes reddish; florets 10–18 (California, s San Bernardino County) | var. imula |
10. Leaves (15–)20–50(–80) mm; outer phyllary apices tan or greenish, not reddish; florets 4–10 | → 11 |
| → 12 |
11. Leaves not gland-dotted | → 13 |
12. Plants 20–60 cm; leaf faces densely tomentulose, gland-dotted; corolla lobes 1–1.5 mm; California (c, n Sierra Nevada, Great Basin), Nevada, Oregon, Utah | var. nevadensis |
12. Plants 10–20 cm; leaf faces glabrous, minutely gland-dotted; corolla lobes 1.5–1.9 mm; California (s Sierra Nevada) | var. vulcanica |
13. Leaf faces tomentulose; corolla lobes 0.7–1 mm | var. affinis |
13. Leaves glabrous or sparsely hairy, sometimes ± viscid; corolla lobes 1–2 mm | → 14 |
14. Corollas clear yellow, tubes glabrous, lobes 1.5–2 mm; Colorado, New Mexico, Utah | var. attenuata |
14. Corollas pale yellow, tubes distally puberulent, lobes 1–1.5 mm; SalmonRiver drainage, Idaho | var. salmonensis |
|
| → 2 |
1. Cypselae hairy (± pilose or sericeous, only distally in var. washoensis) | → 11 |
2. Style appendages shorter than or equaling stigmatic portions | → 3 |
2. Style appendages longer than stigmatic portions | → 4 |
3. Corolla lobes 1.5–2.5 mm | var. oreophila |
3. Corolla lobes 0.6–1.3 mm; Guadalupe Mountains, New Mexico, Texas | var. texensis |
| → 5 |
4. Corolla lobes glabrous | → 6 |
5. Plants 60–150 cm; involucres 10–12.5 mm; inner phyllary apices acute to obtuse; sandy gravels of dry streambeds, c, ne Arizona, New Mexico, Utah | var. nitida |
5. Plants 40–60 cm; involucres 11.2–16 mm; inner phyllary apices acute to short-acuminate; dunes and deep sands, nw Arizona, e Nevada, Utah | var. turbinata |
6. Phyllary abaxial faces (at least outer) tomentulose or scurfy-tomentulose | → 7 |
6. Phyllary abaxial faces usually glabrous (outer sometimes sparingly hairy in var. oreophila) | → 8 |
7. Stems nearly leafless (at flowering); leaves 15–30 × 0.5–1 mm; phyllary apices acute to acuminate | var. bigelovii |
7. Stems leafy; leaves 30–50 × 1–1.5 mm; phyllary apices acute (outer) to frequently obtuse (inner) | var. nitida |
8. Stems often leafless (at flowering); phyllary apices acute to obtuse; corolla lobes 0.5–1.1 mm | var. leiosperma |
8. Stems usually leafy; phyllary apices acute, acuminate, or cuspidate; corolla lobes 1.3–2.5+ mm | → 9 |
9. Plants 10–20 cm; involucres 12–16 mm; gypsiferous shale, Sevier County, Utah | var. iridis |
9. Plants 25–250 cm; involucres 6.5–12.5 mm; w United States (not on highly gypsiferous soils) | → 10 |
10. Corolla lobes 1.3–1.5 mm; leaves 1–2 mm wide; ec Utah | var. psilocarpa |
10. Corolla lobes 1.5–2.5 mm; leaves 0.8–1 mm wide; w UnitedStates | var. oreophila |
11. Style appendages usually shorter than stigmatic portions (equaling or shorter in var. lastisquamea, about equaling in var. oreophila) | → 12 |
11. Style appendages longer than stigmatic portions | → 16 |
12. Corolla lobes 0.5–1 mm | → 13 |
12. Corolla lobes 1.5–2.5 mm | → 14 |
13. Phyllaries tomentose; well-drained, gravelly or sandy slopes; c, w Arizona, s California, s Idaho, Nevada, New Mexico, se Oregon, Utah | var. hololeuca |
13. Outer phyllaries densely tomentulose, inner glabrous; dry streambeds and arroyos; se Arizona, New Mexico | var. latisquamea |
14. Phyllary apices recurved (s California) | var. ceruminosa |
14. Phyllary apices erect | → 15 |
15. Plants 10–30 cm; leaf blades 1–3 mm wide; Idaho, Oregon, Washington | var. nana |
15. Plants 70–250 cm; leaf blades 0.8–1 wide; w United States | var. oreophila |
16. Corolla lobes villous (sometimes sparsely) | → 17 |
16. Corolla lobes glabrous | → 20 |
17. Cypselae distally pilose; corolla lobes 1.3–1.6 mm; ne California, adjacent Nevada | var. washoensis |
17. Cypselae hairy throughout; corolla lobes 0.7–0.9 mm; Arizona, c, s Nevada, Utah | → 18 |
18. Stems usually leafless (at flowering); co-rollas 7–8.5 mm | var. juncea |
18. Stems at least moderately leafy; corollas 9.5–11.8 mm | → 19 |
19. Leaf blades 30–50 mm, faces glabrate; inner phyllary apices acute to obtuse; corolla lobes glabrous or villous; northern Arizona, ne New Mexico,s Utah | var. nitida |
19. Leaf blades 10–20 mm, faces tomentulose to densely tomentose; inner phyllary apices usually acute to acuminate; corolla lobes villous; e Nevada, Utah | var. turbinata |
20. Involucres 16–19 mm; phyllary apices ± recurved | var. arenaria |
20. Involucres 6–14.5 mm; phyllary apices erect | → 21 |
21. Stems nearly leafless (at flowering; s California, s Nevada) | var. mohavensis |
| → 22 |
22. Leaf blades 3–5-nerved, 3–6(–10) mm wide (mountains, Utah, Cache to Sevier counties) | var. salicifolia |
22. Leaf blades 1–3-nerved, 0.3–3 mm wide | → 23 |
23. Phyllaries usually glabrous, outer sometimes sparsely hairy | → 24 |
23. Phyllaries usually hairy (at least outer, sometimes ± tomentose), rarely glabrous | → 26 |
24. Corollas 10–12 mm; involucres 10–14 mm (s California) | var. bernardina |
24. Corollas 6–9+ mm; involucres 6–10 mm | → 25 |
25. Corolla lobes 0.6–1.5 mm; corolla tubes puberulent or glabrous; plains, Arizona, Utah, Wyoming eastward | var. graveolens |
25. Corolla lobes 1.5–2.5 mm; corolla tubes glabrous; Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, w Wyoming | var. oreophila |
26. Involucres 6–10 mm; corollas 6–9 mm | → 27 |
26. Involucres 7.5–14 mm; corollas 8.7–13 mm | → 28 |
27. Corolla tubes usually puberulent, rarely arachnose; plains and hills, Alberta, Saskatchewan, Colorado, Idaho, Montana, Nebraska, North Dakota, South Dakota, Wyoming | var. nauseosa |
27. Corolla tubes glabrous; Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, w Wyoming (mostly Great Basin) | var. oreophila |
28. Inner phyllary apices acute to obtuse; corolla lobes 0.7–1 mm (n Arizona, ne New Mexico, s Utah) | var. nitida |
28. Inner phyllary apices acuminate to acute; corolla lobes 1.1–2.3 mm | → 29 |
29. Stems yellowish green, becoming whitish, compactly tomentose; leaves yellowish green (s California) | var. bernardina |
29. Stems whitish, loosely tomentose; leaves dark green to grayish white | var. speciosa |
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FNA vol. 20, p. 71. |
FNA vol. 20, p. 62. |
Asteraceae > tribe Astereae > Ericameria |
Asteraceae > tribe Astereae > Ericameria |
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. compacta, E. cooperi, E. crispa, E. cuneata, E. discoidea, E. ericoides, E. fasciculata, E. gilmanii, E. greenei, E. laricifolia, E. lignumviridis, E. linearifolia, E. linearis, E. nana, E. nauseosa, E. obovata, E. ophitidis, E. palmeri, E. paniculata, E. parishii, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. watsonii, E. winwardii, E. zionis |
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. compacta, E. cooperi, E. crispa, E. cuneata, E. discoidea, E. ericoides, E. fasciculata, E. gilmanii, E. greenei, E. laricifolia, E. lignumviridis, E. linearifolia, E. linearis, E. nana, E. obovata, E. ophitidis, E. palmeri, E. paniculata, E. parishii, E. parryi, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. watsonii, E. winwardii, E. zionis |
E. parryi var. affinis, E. parryi var. aspera, E. parryi var. attenuata, E. parryi var. howardii, E. parryi var. imula, E. parryi var. latior, E. parryi var. monocephala, E. parryi var. montana, E. parryi var. nevadensis, E. parryi var. parryi, E. parryi var. salmonensis, E. parryi var. vulcanica, E. var. salmonensis |
E. nauseosa var. arenaria, E. nauseosa var. bernardina, E. nauseosa var. bigelovii, E. nauseosa var. ceruminosa, E. nauseosa var. graveolens, E. nauseosa var. hololeuca, E. nauseosa var. iridis, E. nauseosa var. juncea, E. nauseosa var. latisquamea, E. nauseosa var. leiosperma, E. nauseosa var. mohavensis, E. nauseosa var. nana, E. nauseosa var. nauseosa, E. nauseosa var. nitida, E. nauseosa var. oreophila, E. nauseosa var. psilocarpa, E. nauseosa var. salicifolia, E. nauseosa var. speciosa, E. nauseosa var. texensis, E. nauseosa var. turbinata, E. nauseosa var. washoensis |
Linosyris parryi |
Chrysocoma nauseosa, Chrysothamnus nauseosus |
(A. Gray) G. L. Nesom & G. I. Baird: Phytologia 75: 88. (1993) |
(Pallas ex Pursh) G. L. Nesom & G. I. Baird: Phytologia 75: 84. (1993) |
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