PHYCOMYCETES OF IOWA 
289 
Mucoraceae 
Piloholus crystallinus (Wigger) Tods. 
“On horse dung very, common in midsummer and autumn.” (1). 
Rhisopus nigricans Ehr. 
Solanum tuberosum. Ames. “The common black mold of bread.” (1). 
“The common decay of apples” (4). “On germinating corn” (9). 
Mucor mucedo Finn. 
“Common on decaying vegetable matter” (4). 
Mucor racemosus Fres. 
“On decaying plums and fermenting liquor.” 
Sporodinia grandis Eink. 
“On decaying toad-stools and pore fungi” (1). 
Entomophthoraceae 
Empusa muscae- Cohn. 
Musca domestica. Morrison; Ames, November, 1900. “On common 
flies in autumn.” (4). 
Bntomophthora calopteni Bessey. 
“This fungus is parasitic upon grasshoppers in autumn.” (1). “On 
Rocky Mountain locust.” (4) . 
Bntomophthora radicans. Bref. 
“On cabbage butterfly.” (4). 
INDEX OF HOSTS 
Acnida tamariscina 
Cystopus bliti (Biv.) D.By. • 
Acnida cannabina 
Cystopus bliti (Biv.) D.By. 
Adbx moschatellina 
Synchytrium anamolon Schrot. 
Agastache scrophulariaefolia 
Peronospora lophanthi Farl. 
Agrimonia gryposepala 
Peronospora potentillae D. By. 
Amaranthus hybridus 
Cystopus bliti (Biv.) D.By. 
Amaranthus retroflexus 
Cystopus bliti (Biv.) D.By. 
Amaranthus blitoides 
Cystopus bliti (Biv.) D.By. 
Amaranthus graecizens 
Cystopus bliti (Biv.) D.By. 
Ambrosia psilostachya 
Cystopus tragopogonis (Pers.) 
Schr. 
Ambrosia artemisifolia 
Cystopus tragopogonis (Pers.) 
Schr. 
Plasmopara Halstedii (Farl.) 
B. and dT. 
Ambrosia trifida 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Amphicarpa monoica 
Synchytrium decipiens Farl. 
Anemone cylindrica 
Synchytrium anemones (D. C.) 
Wor. 
Anemone dichotoma 
Plasmopara pygmea (Unger) 
Schr. 
Anemone canadensis 
Plasmopara pygmea (Unger) 
Schr. 
Anemone sp. 
Plasmopara pygmea (Unger) 
Schr. 
Apios tuberosa 
Synchytrium decipiens Farl. 
Artemisia biennis 
Cystopus tragopogonis (Pers.) 
Schr. 
Peronospora leptosperma D.By. 
Artemisia ludoviciana 
Peronospora leptosperma D.By, 
Astragalus canadensis 
Peronospora trifoliorum D.By. 
Bidens frondosa 
Plasmopara Halstedii (Farl.) 
D. and dT. 
Bidens laevis 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Bidens chrysanthemoides 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Bidens connata 
Plasmopara Halstedii (Farl.) D. 
and dT. 
Bidens cornua 
Plasmopara Halstedii (Farl.) B, 
and dT. 
