Oreostemma alpigenum var. haydenii

(T. C. Porter) G. L. Nesom

Phytologia 74: 313. 1993.

Common names: Hayden’s mountaincrown
Basionym: Aster haydenii Porter in F. V. Hayden, Prelim. Rep. U.S. Geol. Surv. Montana, 485. 1872
Synonyms: Aster alpigenus var. haydenii (Porter) Cronquist Oreostemma alpigenum subsp. haydenii (Porter) Semple Oreostemma haydenii
Treatment appears in FNA Volume 20. Treatment on page 360.
Revision as of 20:30, 16 December 2019 by FNA>Volume Importer

Stems 4–10(–15) cm. Basal leaf blades linear-oblanceolate to narrowly oblanceolate, (30–)40–90(–120) × (1–)2–4(–6) mm, apices acute. Cypselae strigose only distally.


Phenology: Flowering (Jun–)Jul–Sep.
Habitat: Rocky slopes, talus, ridges, usually in alpine tundra, sometimes in clearings in pine-fir or pine-spruce woods, sometimes around lake edges or near snow banks, usually in drier sites
Elevation: 2600–3300 m

Discussion

Selected References

None.

Lower Taxa

None.
Guy L. Nesom +
(T. C. Porter) G. L. Nesom +
Aster haydenii +
Hayden’s mountaincrown +
Idaho +, Nev. +, Oreg. +  and Wyo. +
2600–3300 m +
Rocky slopes, talus, ridges, usually in alpine tundra, sometimes in clearings in pine-fir or pine-spruce woods, sometimes around lake edges or near snow banks, usually in drier sites +
Flowering (Jun–)Jul–Sep. +
Illustrated +  and Endemic +
Aster alpigenus var. haydenii +, Oreostemma alpigenum subsp. haydenii +  and Oreostemma haydenii +
Oreostemma alpigenum var. haydenii +
Oreostemma alpigenum +
variety +