Apocynum androsaemifolium
A plant of relatively moist forest. Distinguished from Apocynum cannabinum by having flowers with spreading rather than erect petals.
Flowers on Mount Elwell, northern Sierra Nevada, California, 22 Jul 2008.
Plant habit on Mount Elwell, 22 Jul 2008.
Cauline leaves on Mount Elwell, 22 Jul 2008.