Mayna integrifolia (AKwhlm.) R. I. Schultes 
Mayna longifolia Poepp. var. 
phasmatocarpa R. 17. Schultes 
XVII 
XVIII 
Mediocactus megalanthus (Schum.) Britton & Rose XV1 
Navia bicolor L. B. Sm. XIV 
Navia Schultesiana L. B. Sm. XV 
Neokoehleria paniculata C. Schweinf: X XIX 
Notylia carnosiflora C. Schweinf: XXVITI 
Notylia conduplicans C. Schweinf: , X XV 
Notylia mirabilis C. Schweinf: . XXVIII 
Notylia parvilabia C. Schweinf: . XXVI 
Notylia rhombilabia CL Schweinf. XXVII 
Pedilochilus Clemensiae L. Wms. .. XXII 
Preparing rubber from latex of Hancornia = NNXIX 
Pterostylis caulescens L. Wms. XXI 
Spiranthes congestiflora LL. Wms. XXXII 
Spiranthes falcata IL. Wms. XXXII 
Spiranthes Gonzalezi L. Wms. XX XITI 
Spiranthes Nageli L. Wis. XXXII 
Spiranthes pseudogoodyerioides L. Wms... NMXNXITI 
Spiranthes pseudopyramidalis 1. Wms. XX XITI 
Spiranthes pubicaulis 1. Wms. XX XIT 
Spiranthes tenella LL. Wis. XXXII 
Spiranthes tenuissima L. Wms. . XXXII 
Tapping Hancornia .-XXXVIII 
Tapping Hevea . cee ey . XXXVIII 
Vellozia phantasmagoria R. EH. Schultes . . XIX, XX 
Vriesia socialis L. B. Sim. p. 122 
Zea Mays L. p. 269, 274; 
XXXIV, XXXV, XXXVI, XXXVIT 
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