Amsonia tomentosa var. tomentosa

Endemic
Synonyms: Amsonia brevifolia A. Gray
Treatment appears in FNA Volume 14.

Plants significantly hetero­phyl­lous. Stem leaves: petiole 1.5–5 mm; blade ovate to lan­ce­o­late (narrowly elliptic to ellip­tic), (2–)3–5.3 cm × (6–)8–27 mm, base convex (often attenuate basally) to rounded or cuneate. Branch leaf blades lanceolate to narrowly elliptic, 2.2–3.7 cm × 4–13 mm. Corolla lobes white to bluish, pinkish, or purplish white (blue to pink in bud) or pale blue to blue. 2n = 22.


Phenology: Flowering spring; fruiting late spring–summer.
Habitat: Sandy washes, deserts, rocky slopes and gullies, limestone or granitic alluvial fans.
Elevation: 600–1900 m.

Discussion

Variety tomentosa is known from a relatively cohesive region that includes the northwestern to north-central quarter of Arizona, southeastern Nevada, and three neighboring counties of southeastern California.

Selected References

None.

Lower Taxa

None.
Linh Tõ Ngô +  and Wendy L. Applequist +
Torrey & Frémont in J. Frémont +
Ariz. +, Calif. +  and Nev. +
600–1900 m. +
Sandy washes, deserts, rocky slopes and gullies, limestone or granitic alluvial fans. +
Flowering spring +  and fruiting late spring–summer. +
Rep. Exped. Rocky Mts., +
Amsonia brevifolia +
Amsonia tomentosa var. tomentosa +
Amsonia tomentosa +
variety +