Luer, C. A. 1993. Icones Pleurothallidinarum X.
Systematics of Dracula (Orchidaceae).
Monogr. Syst. Bot. Missouri Bot. Gard. 46: 1-244.

Luer, C. A. 1994. Icones Pleurothallidinarum XI.
Systematics of Lepanthes subgenus Brachycladium and Pleurothallis subgenera Aenigma, Elongatia, Kraenzlinella. Addenda to Dracula, Lepanthopsis, Myoxanthus, Platystele, Porroglossum, and Trisetella.
Monogr. Syst. Bot. Missouri Bot. Gard. 52: 1-137.

Luer, C. A. 1997. Icones Pleurothallidinarum XV.
Systematics of Trichosalpinx. Addenda to Dracula, Masdevallia, Myoxanthus, and Scaphosepalum. Corrigenda to Lepanthes of Ecuador (Orchidaceae).
Monogr. Syst. Bot. Missouri Bot. Gard. 64: 1-136.

Luer, C. A. 1998. Icones Pleurothallidinarum XVII.
Systematics of subgen. Pleurothallis sect. Abortivae sect. Truncatae sect. Pleurothallis subsect. Acroniae subsect. Pleurothallis subgen. Dracontia subgen. Unciferia Addenda to Dracula, Lepanthes, Masdevallia, Porroglossum, and Scaphosepalum.
Monogr. Syst. Bot. Missouri Bot. Gard. 72: 1-121.

Luer, C. A. 1999. Icones Pleurothallidinarum XVIII.
Systematics of Pleurothallis subgen. Pleurothallis sect. Pleurothallis, subsect. Longiracemosae, subsect. Macrophyllae-Racemosae, subsect. Perplexae, subgen. Pseudostelis, subgen. Acuminatia. Addenda to Dracula, Lepanthes, Masdevallia and Pleurothallis. Miscellaneous new species of Dryadella, Lepanthes and Pleurothallis.
Monogr. Syst. Bot. Missouri Bot. Gard. 76: 1-182.

Luer, C. A. 2006. Icones Pleurothallidinarum XXVIII.
A reconsideration of Masdevallia. Systematics of Specklinia and vegetatively similar taxa (Orchidaceae). Miscellaneous new taxa in the Pleurothallid genera Acianthera, Acronia, Arthrosia, Colombiana, Crocodeilanthe, Dracula, Dryadella, Loddigesia, Masdevallia, Myoxanthus, Ogygia, Platystele, Porroglossum, Restrepia and Trichosalpinx.
Monogr. Syst. Bot. Missouri Bot. Gard. 105: 1-274.

Thesaurus Dracularum
part I to VII
Carlyle A. Luer
Missouri Botanical Gardens