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FNA | Family List | FNA Vol. 20 | Asteraceae | Ericameria

27. Ericameria parryi (A. Gray) G. L. Nesom & G. I. Baird, Phytologia. 75: 88. 1993.

Linosyris parryi A. Gray, Proc. Acad. Nat. Sci. Philadelphia 15: 66. 1863

Plants 10–100 cm. Stems ascending to erect, greenish when young becoming tan and gray, sometimes fastigiately branched, densely white to grayish tomentose, eglandular. Leaves (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. Heads usually in congested, racemiform or cymiform clusters, sometimes grouped in paniculiform or thyrsiform arrays, sometimes borne singly. Peduncles 1–10+ mm (bracts 0–3, transitional from distal leaves to phyllaries). Involucres subcylindric, 9–18 × 4–8 mm. Phyllaries 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. Ray florets 0. Disc florets 5–20; corollas 8–12.5 mm. Cypselae tan, narrowly ellipsoid to subturbinate, 3–8 mm, sericeous; pappi off-white to brown, 3.3–7.5 mm. 2n = 18.

Varieties 12 (12 in the flora): w United States.

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).

1 Heads 1–2(–4) at branch tips; leaves sparsely to densely tomentulose (2800–3700 m, California, Nevada)   27g Ericameria parryi var. monocephala
+ 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 (1) Leaves oblanceolate, 5–14 mm wide (Califor-nia)   27f Ericameria parryi var. latior
+ Leaves linear, linear-spatulate, oblanceolate, or spatulate, 0.5–5 mm wide   (3)
3 (2) Leaves abundantly stipitate-glandular (never glabrous or otherwise hairy; California, Nevada)   27b Ericameria parryi var. aspera
+ Leaves glabrous or tomentulose to tomentose, usually eglandular, sometimes viscidulous or sparsely or minutely stipitate-glandular, or gland-dotted   (4)
4 (3) Distalmost leaves overtopping arrays   (5)
+ Distalmost leaves usually shorter than or equaling (seldom overtopping) arrays   (10)
5 (4) Leaves minutely stipitate-glandular   27j Ericameria parryi var. parryi (in part)
+ Leaves not stipitate-glandular, sometimes gland-dotted (sessile), glabrous, moderately hairy, tomentose, or viscidulous   (7)
6 (6) Leaf faces glabrous, viscidulous.   (6)
+ Leaf faces tomentulose, tomentose, or moderately hairy, sometimes gland-dotted   (8)
7 (5) Plants 10–20 cm; leaves 20–35 mm; corolla lobes 1.4–1.7; Idaho/Montana border   27h Ericameria parryi var. montana
+ Plants 30–60 cm; leaves 30–50(–80) mm; corolla lobes 1–1.5 mm; Salmon River drain-age, Idaho   27k Ericameriaparryi var. salmonensis
8 (6) Leaf faces glabrous or puberulent, often minutely stipitate-glandular; florets 8–20   27j Ericameria parryi var. parryi (in part)
+ Leaf faces tomentulose to tomentose, sometimes gland-dotted; florets 5–7(–8)   (9)
9 (8) Leaf faces tomentose, eglandular; corollas pale yellow; n Arizona, Colorado, Nebraska, New Mexico, s Utah, Wyoming   27d Ericameria parryi var. howardii
+ Leaf faces densely tomen-tulose, gland-dotted; corollas clear yellow; Arizona, California, Nevada, Oregon, Utah   27i Ericameria parryi var. nevadensis (in part)
10 (4) Leaves 10–15 mm; outer phyllary apices sometimes reddish; florets 10–18 (California, s San Bernardino County)   27e Ericameria parryi var. imula
+ Leaves (15–)20–50(–80) mm; outer phyllary apices tan or greenish, not reddish; florets 4–10   (11)
11 (10) Leaves gland-dotted   (12)
+ Leaves not gland-dotted   (13)
12 (11) 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   27i Ericameria parryi var. nevadensis (in part)
+ Plants 10–20 cm; leaf faces glabrous, minutely gland-dotted; corolla lobes 1.5–1.9 mm; California (s Sierra Nevada)   27l Ericameria parryi var. vulcanica
13 (11) Leaf faces tomentulose; corolla lobes 0.7–1 mm   27a Ericameria parryi var. affinis
+ Leaves glabrous or sparsely hairy, sometimes ± viscid; corolla lobes 1–2 mm   (14)
14 (13) Corollas clear yellow, tubes glabrous, lobes 1.5–2 mm; Colorado, New Mexico, Utah   27c Ericameria parryi var. attenuata
+ Corollas pale yellow, tubes distally puberulent, lobes 1–1.5 mm; SalmonRiver drainage, Idaho   27k Ericameria parryi var. salmonensis


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