Flora of North America species comparison

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Penstemon nitidus var. polyphyllus
Photo is of parent taxon

waxleaf penstemon
Thyrses

proximal bracts ovate to lanceolate.
Flowers

calyx lobes lanceolate, (3.2–)5–7.5 mm.

Penstemon nitidus var. polyphyllus
Phenology Flowering Apr–Jun.
Habitat Rocky or gravelly soils, slopes and banks, montane grasslands.
Elevation 400–1700 m. (1300–5600 ft.)
Distribution
from FNA
ID; MT
[BONAP county map]
Discussion

Variety polyphyllus is known from the upper Clark Fork River valley of east-central Idaho (Lemhi County) and west-central Montana (Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Missoula, Powell, and Silver Bow counties). Compared to var. nitidus, it generally is taller and has relatively longer, narrower leaves, bracts, and calyx lobes.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 122.
Parent taxa Plantaginaceae > Penstemon > subg. Penstemon > sect. Coerulei > Penstemon nitidus
Sibling taxa
P. nitidus var. nitidus
Synonyms P. nitidus subsp. polyphyllus
Name authority (Pennell) Cronquist: in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 4: 395. (1959)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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