1922] 



INDEX 



441 



the 



342 



pallescens (Clavaria), 46 



Payson, E. B. A monographic study of 

 Thelypodium and its immediate al- 

 lies, 233 



Peckii (Clavaria), 38 



Peckii (Clavaria) , 67 



Petersii (Clavaria), 35 



Pfeiffer, Norma E. Monograph of 

 Isoetaceae, 79 



Phleum, bacterial diseases of, 333, 



Phomopsis Sojae, germination of spores 

 of, in sulphur compounds, 408 



pilipes (Clavaria,) 59 



pilosa (Clavaria), 46 



pinicola (Clavaria), 25 



pinophila (Clavaria), 36 



Piricularia, 341 



Pistillaria Typhuloides, 69 



pistillaris (Clavaria), 58 



pistillaris umbonata (Clavaria) , 58 



pistillaris (Craterellus), 69 

 platyclada (Clavaria), 45 

 Pleurophragma, 241, 261 ; gracilipes, 

 277; integrifolium, 277, 279; platy- 



podum, 276 

 Poa, bacterial diseases of, 333, 342 



polita (Clavaria), 63 



Pring, George H. A new hybrid nym- 



phaea, 325 

 Pseudomonas Avenae, 337; albopre- 



cipitans, 383; Tritici, 339; vascu- 



larum, 336 

 Pterula tenax, 67 

 pulchra (Clavaria), 57 

 pusilla (Clavaria), 27 

 pyxidata (Clavaria), 34 



R 



radiata (Clavaria), 64 

 Bamaria amethystina, 41; cristata, 31 

 Eosen, H. R. A bacterial disease of fox- 

 tail (Chaetochloa lutescens), 333 

 rufipes (Clavaria), 33 

 rugosa (Clavaria), 32 



299 

 conferti- 



307, var. xcrophilum, 304; lasiophyl- 



lum, 304; reflexum, 304 

 spathulata (Clavaria), 53 

 sphaerospora (Clavaria), 52 

 spiculospora (Clavaria), 17 

 Stanfordia, 283; calif ornica, 

 Stanleya amplexifolia, 312; 



flora, 244; gracilis, 313 

 Stanieyella, 256, 315; Wrightii, 315, 



var. tenellum, 317 



Streptanthella, 255, 309; longirostris, 



310 

 Streptanthus, 283 ; calif ornicus, 299 ; 



campestris, 286; Coulteri, 296; eras- 



sicaulis, 292; flavescens, 301; hetero- 



phyllus, 296; Howellii, 



tus, 287; 



297; 



265 ; infla- 



310; Parryi, 



sagittatus, 267 



23 



67 



longirostris, 

 procerus, 301 ; 



stricta (Clavaria), 23 



strict a var. fumida (Clavaria), 



subcaespitosa (Clavaria), 30 



subcortical ( Lachnocladium ) , 



subcorticalis (Clavaria), 66 



subfalcata (Clavaria), 51 



subtilis (Clavaria), 28 



Subularia, 104 



Sulphur, The toxic property of, 403 



Sulphur dioxide, toxicity of, 404, 421 



Sulphur trioxide, toxicity of, 405, 421 



sulphurascens (Clavaria), 64 



Sulphuric acid, toxicity of, 405, 



Sulphurous acid, toxicity of, 404 



421 



T 



Temperature: effect of, on growth 

 foxtail organism, 380; relation of 2 



infection, 346 

 max (Clavaria), 67 

 max (Merisma), 67 



growth of 



• *,to 



s 



Saccharum, bacterial diseases of, 333 

 scabra (Clavaria), 1 

 Schaefferi (Clavaria), 48 

 Sclerotinia cinerea, germination of 



spores of, in sulphur compounds, 



407 

 Secale, bacterial diseases of, 333, 342 

 secunda (Clavaria), 19 

 Setaria, bacterial diseases of, 333 

 similis (Clavaria), 38, 56 

 Sisymbrium erysimioides, 

 Sisymbrium, 258; acutangulum, 



acuticarpum, 306; deflexum f 



258 



306; 

 304, 



