California Native Plant Link Exchange
Plants at the edge of their range in Colusa County
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Profile of Colusa County

Isolation from Adjacent Counties
Plants found in Colusa County and
found only in Colusa County
not found in any adjacent county
found in one or fewer adjacent counties
found in two or fewer adjacent counties
Isolation between Jepson Bioregions within Colusa County
Plants found in the
  North Coast Ranges
  Sacramento Valley
bioregion and
not found in any other bioregion
found in one or fewer other bioregions
found in two or fewer other bioregions
Rarity Omit plants considered rare (statewide) by CNPS