Hymenoxys hoopesii

(A. Gray) Bierner
Sida 16: 6. 1994.
Common names: Owl’s-claws orange-sneezeweed
IllustratedEndemic
Basionym: Helenium hoopesii A. Gray Proc. Acad. Nat. Sci. Philadelphia 15: 65. 1864
Synonyms: Dugaldia hoopesii (A. Gray) Rydberg
Treatment appears in FNA Volume 21. Treatment on page 439. Mentioned on page 435, 436.

Perennials, 30–100 cm (polycarpic, often with blackish, stout rhizomes). Stems 1–4, green throughout to often purple-red-tinted proximally to purple-red-tinted throughout, branched distally, glabrous or ± hairy. Leaves: blades simple, glabrous or ± hairy, gland-dotted; mid leaves simple. Heads 1–12 per plant, in paniculiform to corymbiform arrays. Peduncles 3–16 cm, ± hairy, tomentose distally near involucres. Involucres hemispheric to broadly campanulate, 12–17 × 19–26 mm. Phyllaries in 2 series, subequal; outer 16–24, basally connate 1/4–1/3 their lengths, ovate to lanceolate, 11–16 mm, apices acute; inner 20–26, obovate to elliptic, 7.5–8.5 mm, apices acuminate to acute. Ray florets 14–26; corollas usually yellow-orange to orange, 21–45 × 4.2–8.5 mm. Disc florets 100–325+; corollas 4.2–5.4 mm. Cypselae obpyramidal to narrowly obpyramidal, 3.5–4.5 mm; pappi of 5–7 lanceolate to lanceolate-acuminate scales 2.9–4.1 mm. 2n = 30.


Phenology: Flowering (May–)Jul–Aug(–Nov).
Habitat: Mountain meadows, open forests, along streams
Elevation: 1500–3700 m

Distribution

V21-1098-distribution-map.gif

Ariz., Calif., Colo., Idaho, Nev., N.Mex., Oreg., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Hymenoxys hoopesii"
Mark W. Bierner +
(A. Gray) Bierner +
Helenium hoopesii +
Owl’s-claws +  and orange-sneezeweed +
Ariz. +, Calif. +, Colo. +, Idaho +, Nev. +, N.Mex. +, Oreg. +, Utah +  and Wyo. +
1500–3700 m +
Mountain meadows, open forests, along streams +
Flowering (May–)Jul–Aug(–Nov). +
Illustrated +  and Endemic +
Dugaldia hoopesii +
Hymenoxys hoopesii +
Hymenoxys +
species +