Patterns and maintenance of extraordinary variation in the Caribbean orchid, Tolumnia (Oncidium) variegata
Ackerman, J.D. (University of Puerto Rico, Rio Piedras, Puerto Rico) ; Galarza-Perez, M
Systematic botany, 1991-01, Vol.16 (1), p.182-194 [Revista revisada por pares]Kent, OH: American Society of Plant Taxonomists
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