Penstemon attenuatus var. palustris

(Pennell) Cronquist

in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 4: 373. 1959.

Endemic
Basionym: Penstemon palustris Pennell Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 8. 1941
Synonyms: P. attenuatus subsp. palustris (Pennell) D. D. Keck
Treatment appears in FNA Volume 17. Treatment on page 194. Mentioned on page 193.

Stems 15–40 cm. Flowers: calyx lobes lanceolate, margins erose; corolla bluish purple to pinkish blue, 7–12 mm; pollen sacs 0.6–0.8(–0.9) mm, dehiscing completely, connective splitting, sutures smooth, sometimes ± papillate.


Phenology: Flowering Jun–Aug.
Habitat: Marshes, stream banks, moist to wet meadows.
Elevation: 400–2400 m.

Discussion

Variety palustris is known from the Blue Mountains of northeastern Oregon and southeastern Washington.

Selected References

None.

Lower Taxa

None.
Craig C. Freeman +
(Pennell) Cronquist +
Penstemon palustris +
Oreg. +  and Wash. +
400–2400 m. +
Marshes, stream banks, moist to wet meadows. +
Flowering Jun–Aug. +
in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. +
P. attenuatus subsp. palustris +
Penstemon attenuatus var. palustris +
Penstemon attenuatus +
variety +