Template:De Roon, 1969a

• De Roon, A.C. 1969. Three new species and a new subspecies of Marcgravia and Souroubea (Marcgraviaceae) from Central America. Acta Botanica Neerlandica 18: 197–202. DOI: 10.1111/j.1438-8677.1969.tb00584.x PDF  
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