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    • California Euphorbia Notes 

      Wheeler, Louis C.
      The Euphorbia species occurring in California need nomenclatorial corrections. A partial synonomy. without combinations in the segregate genera, is given. A new species, species new to California, and range extensions of ...
    • Euphorbia in the Pacific States 

      Wheeler, Louis C.
      This paper includes notes concerning species of Euphorbia occurring in or reported from the Pacific States (California, Oregon, and Washington), a key to all the native or naturalized species occurring in this area, and ...