

1922] 



INDEX 



439 



E 



ericetorum (Clavaria) y 54 

 Erysimum retro fr actum, 304 

 Euclisia amplexicaulis, 285 

 Euklisia longirostris, 310 

 exigua (Clavaria), 42 



F 



fellea (Clavaria), 39 

 filipes (Clavaria), 53 

 fistulosa (Clavaria), 59 

 flaccida (Clavaria), 26 

 flava (Clavaria), 12 

 flavella (Clavaria), 12 

 flavobrunnescens (Clavaria), 22 

 flavula (Clavaria), 21 



flavuloides (Clavaria), 28 



Flowers of sulphur, toxicity of, 408; 

 finely ground, 409 



foetida (Clavaria), 52 



formosa (Clavaria), 11 



Foxtail, a bacterial disease of, 333 



Foxtail organism, diagnosis of, 383; 

 hosts and extent of injury, 342; in- 

 ternal appearance and paths of in- 

 fection of, 341; morphology of, 347; 

 physiological reactions of, 380; pre- 

 cipitate production of, 376; tolera- 

 tion of acids by, 364 



fragilis (Clavaria), 48 



fragrantissima (Clavaria), 28 



Fuller's scale, limitations of, 359 



fumigata (Clavaria), 15 



fuscescens (Clavaria), 62 



fusiformis (Clavaria), 44 



G 



gigantca (Acurtis), 68 



gigantea (Clavaria), 68 



Gloeosporium venetum, germination of 



spores of, in sulphur 

 Glomerella cingulata, 



spores of, in sulphur 

 gracilis (Clavaria), 28 

 gracillima (Clavaria), 

 Gramineae, bacterial diseases of, 333 

 grandis (Clavaria), 15 

 Guillenia, 283 ; Cooperi, 293 ; flaves- 



cens, 302; Hookcri, 302; inaliena, 



306; lasiophylla, 304; rigida, 307; 



rostrata, 310 



compounds, 407 

 germination of 



compounds, 407 

 54 



H 



Herveyi (Clavaria), 39 

 Hesperidanthus, 259 

 Heterothrix, 259 



Hibbardi (Tremellodendron) , 67 



holorubella (Clavaria), 10 



Hordeum, bacterial diseases of, 333, 

 342 



Hydrogen-ion 

 tion to 



concentration : in rela- 



methods of 



growth, 376; 

 measuring, 356; relation of toxicity 

 of sulphur compounds to, 418 

 Hydrogen sulphide, toxicity of, 404 



coro- 

 113, 



128; 



184; 



118; 

 230; 



I 



inaequalis (Clavaria), 55 



incurvata (Clavaria), 62 



Isoetaceae, monograph of the, 79 



Isoetella, 104; Duriaei, 209 



Isoetes, 103; adspersa, 115, 220 \ ae- 

 quinoctialis, 107; alata, 137; alpina, 

 122, 222; amazonica, 125; ambigua, 

 157; Andina, 138; azorica, 207, 232; 

 Bolanderi, 143, 228, var. pygmaea, 

 146; Bolanderi var. Parryi, 143, var. 

 Sonnei, 143; Boryana, 116, 220; 

 brachyglossa, 109; Braunii, 156, 230, 

 forma robusta, 173, var. maritima, 

 174; Brochoni, 156, 230; Butleri, 152, 

 228) Butleri var. immaculata, 152; 

 calif ornica, 143; canadensis, 184, var. 

 Robbinsii, 184; capsularis, 109; Cha- 

 boissaei, 119; Chapmani, 136; 

 mandelina, 109, 218; cubana, 

 220; decipiens, 119; Delandei, 

 Dodgei, 184, var. Eobbinsii, 

 Drummondii, 125, 224; dubia, 

 Duriaei, 209, 232; Eatoni, 177, 

 echinospora, 154, 230, var. asiatica, 

 156; echinospora var. Boottii, 156, 

 var. Braunii, 156, forma Boottii, 157, 

 forma robusta, 173, var. Brittonii, 

 157, var. Flettii, 186, var. maritima, 

 174, var. muricata, 157, var. robusta, 

 173, var. truncata, 175; edulis, 208; 

 elatior, 126; Engelmanni, 201, 232, 

 var. caroliniana, 207, 232; Engel- 

 manni, var. fontana, 201, var. grac- 

 ilis, 201, var. valida, 201; flaccida, 

 136, 226, var. alata, 137, 226; flacci- 

 da var. Chapmani, 136, var. rigida, 

 136; Flettii, 186, 230; foveolata, 

 200, 232; Gardneriana, 126; Graves- 

 ii, 173; Gunnii, 124, 224; Har- 

 veyi, 192; Heldreichii, 109; heteros* 

 pora, 192; hieroglyphica, 194; his- 

 trix, 128, 224, forma subinermis, 129 ; 

 histrix forma desquamata, 129, var. 

 scutellata, 129; Hookeri, 134; Howel- 

 lii, 139, 228, var. minima, 142; hu- 

 milior, 134; japonica, 208; Karstenii, 

 138; Kirkii, 123, 222; lacustris, 186, 

 230; lacustris, 124, 192, var. pauper- 

 cula, 189; Lechleri, 138; leiospora, 



