NINETEENTH ANNUAL MEETING. 95 



215. Peronospora australis, Spegz. (P. sicyicola, Trelease.) On Sicyos angulatus, L. 



216. Peronospora Corydalis, DeBary. On Corydalis aurea, Willd., var. occidentalis, 



Engl. 



217. Peronospora Halstedii, Farl. On Helianthus doronocoides, Lam., Ambrosia 



triflda. L., Artemisia Ludoviciana, Nutt., Silphium integrifolium, Mx., Ver- 

 nonia Baldwinii, Torr. 



218. Peronospora Oxybaphi, E. &. K. On Oxybaphus Nyctagineus, Sweet. 



219. Peronospora parasitica, (Pers.) Tul. On Draba Caroliniana, Walt., Sisymbrium 



canescens, Nutt., Lepidium Virginicum, L. 



220. Peronospora Potentillae, DeBary. On Potentilla Norvegica, L. 



221. Peronospora sordida, Berk. On Schrophularia nodosa, L. 



222. Peronospora viticola, B. <fe C. Cn Vitis sp. cult., V. cordifolia, Mx. 



223. Oidium fructigenum, Pers. On decaying plums. 



224. Oidium leucoconinum, Desm. On Rosa Arkansana, Ehrh. 



225. Tricothecium griseum, C. <fe E. On Panicum sp. 



226. Tricothecium roseum, Fr. On Hackberry bark. 



SPHa:RIACE^. 



227. Fusidium Ravenelianum, Thiim. ( Ramularia Desmodii, Cke.) On Desmodium 



sp. 



ASCOMYCETES. 



228. Morchella esculenta. 



229. Peziza occidentalis, Schw. On dead twigs. 



230. Peziza vesiculosa, Bull. On manure heap. 



231. Ascobolus pilosus, Fr. On Cow dung. 



232. Exoascus deformaus (Berk.) (Ascomyces deformans, Berk.) On peach leaves. 



233. Exoascus Pruni, Fuckl. On Prunus Americana, Marshall. 



234. Uncinula macrospora, Pk. On Ulmus fulva, Mx. 



235. Uncinula spiralis, B. &, C. On Ampelopsis quinquefolia, Mx. 



236. Microsphjera Euphorbias, B. <fe C. (?). On Euphorbia marginata, Ph. 



237. Microsphtera Friesii, Lev. On Syringa vulgaris, L. 



238. Microsphaera Platani. On Platanus occidentalis, L. 



239. Podosphfera tridactyla, (Wallr.) (P. Kunzei, Lev.) On cult, cherry. 



240. Phyllactinia suffulta, ( Reb.) (P. guttata, Reb.) On Celastrus scandens, L. 



241. Sphaerotheca castagnei. Lev. On Bidens frondosa, L. 



242. Erysiphe communis, Schl. On Amphicarpsea monoica, Nutt. 



243. Erysiphe lamprocarpa. Lev. On Verbena and many other plants. 



244. Chsetomium chartarum (Eda.) On old paper. 



245. Rhytisma acerinum, Pers. On Acer dasycarpum, Ehrh. 



246. Claviceps purpurea, (Fr.) Tul. On rye, Elymus Canadensis, L. 



247. Hypoxylon rubiginosum, Fr. On rotten log. 



248. Hypoxylon tinctor. Berk. On willow log. 



249. Phyllachora Lespedezae, ( Schr.) ( Dothidea Lespedezae, Schr.) On Lespedeza 



capitata, Mx. 



250. Parodiella perisporioides, (B. & C.) On Psoralea floribunda, Nutt., P. argo- 



phylla. Ph. 



251. Parodiella tetraspora, (B. & R.) On Madura auriantica, Nutt. 



252. Diatrype albopruinata, Schw. On Quercus prinoides, Willd. 



253. Melanconis dasycarpa. E. &, K. On Acer dasycarpum, Ehrh. 



254. Ophiobolus acuminata, Don. (Sphseria carduorum, Wallr.) On Cnicusaltissimus, 



Willd. 



255. Ophiobolus porphyrogonas. (Tode.) Sacc. (Sphaeria rubella, Pers.) On old stems 



of Scutellaria. 



