Apocynum androsaemifolium  L.

Ubiquity:  Very uncommon

Distritution:  Reported only at St. Helena & R.L.S. State Park

Plant Communities:  Forests, Blue Oak Woodland

Habitats:  Dry, sunny, rocky, forested or wooded, rocky slopes/plateaus; in volcanic areas

Elevations:  300-1600'

Comments: = A. medium var. floribundum & A. pumilum

Updated: 2/19/98

Apocynum cannabinum L.

Ubiquity:  Uncommon

Distritution: N1/2, SE1/4 except Napa Marsh

Plant Communities:  Many, including Ruderal

Habitats:  Moist, sunny ditches/creeksides; and cultivated areas like orchards; in most geologic formations except serpentine

Elevations:  100-770'

Comments:   = A. c. var. glaberrimum & A. sibiricum var. salignum

Updated: 2/19/98