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by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (St. Petersburg Junior College); Elizabeth E. Reeder
by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (St. Petersburg Junior College)
by Beverley, Jo
by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (St. Petersburg Junior College); John Aliff
by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (Former Affiliations: University of Maryland, College Park St. Petersburg College ); David M. Hassenzahl (University of Nevada, Las Vegas)
University of Maryland, College Park
St. Petersburg College
)