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  1. By: Mulligan, G A - Calder, J A
    Type: Article
    In: Rhodora
    Volume: 66
    Date: 1964
    Page Range: 127--135
    Publication info: [Cambridge, Mass., etc.]New England Botanical Club [etc.]
  2. By: Calder, J A - Taylor, R L
    Type: Article
    In: Madroño; a West American journal of botany.
    Volume: 17
    Date: 1963
    Page Range: 69--76
    Publication info: Berkeley,California Botanical Society.
  3. By: Calder, J A
    Type: Article
    In: Rhodora
    Volume: 54
    Date: 1952
    Page Range: 246--250
    Publication info: [Cambridge, Mass., etc.]New England Botanical Club [etc.]