County Distribution
Asclepias speciosa Torr. -
showy milkweed
ASSP
in the state of California
Our county data are based primarily on the literature, herbarium specimens, and confirmed
observations. However, not all populations have been documented, so some gaps in the
distribution shown above may not be real. Please use the
Distribution Update module to improve the data
by adding your new distribution information to PLANTS. Remember that only native and
naturalized populations are mapped!
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