Palmodictyon viride, 7 
Pandorina morum, 7 
Pediastrum Boryanum, 7 
duplex, 7 
tetras, 7 
Pithophora Mooreana, 7 
Oedogonia, 7 10 
Pleodorius californica, 7 
Pleurococcus vulgaris, (common) 
Protosiphon botryoides, 7 
Rhizoclonium hieroglyphicum, 7 
Scenedesmus bijuga, 7 
obliquus, 7 
dimorphus, 7 
quadricauda, 7 65 
Selenastrum gracile, 7 
Stigeoclonium aestivalis, 7 
glomeratum, 7 
lubricum, 7 
stagnatile, 7 
tenue, 1 7 
Tetraedron caudatum, 7 
trigonum, 7 
pentagonum, 7 
Tetraspora gelatinosa, 7 : 
Vaucheria sp,, 7 
Volvox Globator, 6 
Zygnema sp., 7 65 
EUMYCETES—PuHycomyckTES. 
Bremia Lactucae, on Lactuca Ludoviciana, 18 
Cystopus Bliti, on Amaranthus retroflexus, 7 
candidus, on Capsella Bursa-pastoris, etc., 1 
Tragopogonis, on Ipomoea, 45 
Empusa Grylli, on Caloptenus differentialis, etc., 1 
Mucor stolonifera, 1 
Perenospora Alsinearum, on Cerastium nutans, 13 109 
Androsaces, on Androsace occidentalis, 16 
Arthuri, on Oenothera biennis, 1 
australis, on Sicyos angulatus, 84 
calotheca, on Galium Aparine. 
conglomerata, on Geranium Carolinianum, 48 
Corydalis, on Corydalis, 93 
effusa Polygoni, on Polygonum dumetorum, 17 48 
Myosotidis, on Myosotis verna, 16 
parasitica, on Brassica oleracea, 7 
Perenoplasmopara Cubensis, on Cucumis and Citrullus, 1 
4 


