Publication Type:Miscellaneous Year of Publication:1951 Authors:Steyermark, J. A. Abstract: 1–242 Taxonomic name: Philodendron callosum subsp. ptarianum (Araceae), Philodendron krauseanum (Araceae), Philodendron englerianum (Araceae), Philodendron ptarianum (Araceae), Anthurium ptarianum (Araceae), Philodendron englerianum subsp. duidae (Araceae) Log in or register to post commentsGoogle ScholarBibTeXRTFMARCEndNote XMLRIS