2 24 GENERAL IXDEX 



heteroecism, the habit of Hying on more than one host-plant during differ- 

 ent periods of the Hfe histor}- of a parasitic species 



host, a pLint or animal supporting a parasite 



liost index of fungi, 206 (see also Index II) 



hot water as a fungicide, 21 



hygrophanous, watery in appearance as tho saturated 



h)Tnenium, the membrane in which the basidia of mushrooms and their allies 

 are borne 



hj-pha, 13 ; the thread-like vegetative part of a fungus 



Hyphomycctes, 74 ; a collective term for the Moniliales ; in certain recent 

 text-books improperly used for all fungi 



hypothallus, a membranous or fleshy base to which perithecia or sporangia 

 are attached 



hypothecium, 54 ; the upper stratum of the ascoma containing the asci 



hysterioid, elongate boat-shaped like one of the Hysteriaceae 



Idaho, Exploration for fungi in, 171 

 Illinois, exploration for fungi in, 17 1 

 Indiana, exploration for fungi in, 172 

 infundibuliform, funnel-shaped 

 ink-caps, I15 ; species of Coprinns 

 intermediate forms of fungi, 130 

 Iowa, exploration for fungi in, 173 



Jew's ear, 94 ; species of Auricidana 



Kansas, Exploration for fungi in, 175 

 Kentucky, exploration for fungi in, 177 



Leaf-blight, 74 



leaf-spot, 69 



lenticular, lens-shaped 



lichens, 67 



Linnaeus, contribution to mycology by, 155 



Louisiana, exploration for fungi in, 177 



liverworts, 9 



Maine, Exploration for fungi in, 178 

 INIaryland, exploration for fungi in, 178 

 Massachusetts, exploration for fungi in, 179 

 Mexico, exploration for fungi in, 19S 

 Micheli, contribution to mycology by, 155 

 Michigan, exploration for fungi in, 180 

 mildews, downy, 29 ; powder)', 40 

 milk-fungi, 1 1 7, 1 18 

 Minnesota, exploration for fungi in, 180 

 IMississippi, exploration for fungi in, 181 

 Missouri, exploration for fungi in, 181 

 Montana, exploration for fungi in, 182 

 morcheln, 66 

 morel, 36, 65, 66, 144 (see also frontispiece) 



