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  1. By: Brown, Roy Curtiss - Schaack, Clark George
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 21
    Date: 1972
    Page Range: 304--304
    Publication Info: Berkeley California Botanical Society
  2. By: Brown, Roy Curtiss
    Type: Article
    In: Rhodora
    Volume: 79
    Date: 1977
    Page Range: 169--189
    Publication Info: [Cambridge, Mass., etc.] New England Botanical Club [etc.]
  3. By: Brown, Roy Curtiss
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 25
    Date: 1978
    Page Range: 187--201
    Publication Info: Berkeley California Botanical Society