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1999 120 162-70 2005 78 185-200 2005 20 841-55 2009 1 1-13 1993 46 91-8 1970 59 1-276 Flora of North America Editorial Committee (FNAE) 2000 86-9 1995 57 136-42 1989 1984 18 665-83 1987 10 330-6 2004 27 781-92 2009 973-86