There were 9 illustrations found:
2 954688 Sobralia allenii L.O.Williams
Ann. Missouri Bot. Gard., vol. 29 : t. 30 (1942) [G.W. Dillon]
6 1083350 Zootrophion gracilentum (Rchb.f.) Luer [125 646042 Masdevallia gracilenta Rchb.f.]
Ann. Missouri Bot. Gard., vol. 29 : t. 30 (1942) [G.W. Dillon]
58 954686 Sobralia aerata (C.K.Allen & L.O.Williams) Garay [107 954736 Sobralia decora var. aerata C.K.Allen & L.O.Williams]
Ann. Missouri Bot. Gard., vol. 29 : t. 31 (1942) [G.W. Dillon]
2 973710 Stelis allenii L.O.Williams
Ann. Missouri Bot. Gard., vol. 29 : t. 32 (1942) [G.W. Dillon]
2 974397 Stelis montana L.O.Williams
Ann. Missouri Bot. Gard., vol. 29 : t. 32 (1942) [G.W. Dillon]
2 973758 Stelis atrorubens L.O.Williams
Ann. Missouri Bot. Gard., vol. 29 : t. 32 (1942) [G.W. Dillon]
6 1088632 Acianthera ellipsophylla (L.O.Williams) Pridgeon & M.W.Chase [125 810771 Pleurothallis ellipsophylla L.O.Williams]
Ann. Missouri Bot. Gard., vol. 29 : t. 33 (1942) [G.W. Dillon]
2 810428 Pleurothallis cardiochila L.O.Williams
Ann. Missouri Bot. Gard., vol. 29 : t. 33 (1942) [G.W. Dillon]
6 915114 Scaphyglottis coriacea (L.O.Williams) Dressler [125 806223 Platyglottis coriacea L.O.Williams]
Ann. Missouri Bot. Gard., vol. 29 : t. 34 (1942) [G.W. Dillon]
2 954688 Sobralia allenii L.O.WilliamsAnn. Missouri Bot. Gard., vol. 29 : t. 30 (1942) [G.W. Dillon]
6 1083350 Zootrophion gracilentum (Rchb.f.) Luer [125 646042 Masdevallia gracilenta Rchb.f.]Ann. Missouri Bot. Gard., vol. 29 : t. 30 (1942) [G.W. Dillon]
58 954686 Sobralia aerata (C.K.Allen & L.O.Williams) Garay [107 954736 Sobralia decora var. aerata C.K.Allen & L.O.Williams]Ann. Missouri Bot. Gard., vol. 29 : t. 31 (1942) [G.W. Dillon]
2 973710 Stelis allenii L.O.WilliamsAnn. Missouri Bot. Gard., vol. 29 : t. 32 (1942) [G.W. Dillon]
2 974397 Stelis montana L.O.WilliamsAnn. Missouri Bot. Gard., vol. 29 : t. 32 (1942) [G.W. Dillon]
2 973758 Stelis atrorubens L.O.WilliamsAnn. Missouri Bot. Gard., vol. 29 : t. 32 (1942) [G.W. Dillon]
6 1088632 Acianthera ellipsophylla (L.O.Williams) Pridgeon & M.W.Chase [125 810771 Pleurothallis ellipsophylla L.O.Williams]Ann. Missouri Bot. Gard., vol. 29 : t. 33 (1942) [G.W. Dillon]
2 810428 Pleurothallis cardiochila L.O.WilliamsAnn. Missouri Bot. Gard., vol. 29 : t. 33 (1942) [G.W. Dillon]
6 915114 Scaphyglottis coriacea (L.O.Williams) Dressler [125 806223 Platyglottis coriacea L.O.Williams]Ann. Missouri Bot. Gard., vol. 29 : t. 34 (1942) [G.W. Dillon]