Part 1, 1922] PHYLLOSTICTACEAE 
With two oil-drops. 
Without oil-drops. 
On Celastraceae. 
Spots zonate; on Celastrus. 
Spots not zonate; on Euonymus. 
On other hosts. ‘ 
On Myricaceae. 
On Betulaceae. 
On Berberidaceae. 
On Malvaceae. 
On Araliaceae. 
On Ericaceae. 
III. BACILLOSTICTEAE 
On Monocotyledonous Hosts 
Spores less than 2 yu broad. 
Spores 0.5 X 4-5 w; on Cyperaceae. 
Spores 1-2 &K 3-5 uw; on Melanthiaceae. 
Spores 1 X 3 yw; on Convallariaceae. 
Spores 1-1.5 X 3-4 u; on Smilacaceae. 
Spores 2 » broad or more. 
Spores 2 X 4 uw; on Typhaceae. 
Spores 2 X 6 uw; on Cyperaceae. 
Spores 2.5 X 4 w; on Araceae. 
On Dicotyledonous Hosts 
On HERBACEOUS Hosts 
Spores laterally flattened; on Scrophulariaceae. 
Spores not laterally flattened. 
Spores usually 2 u or more broad. 
Spots irregular or indefinite in form. 
On Oxalidaceae. 
On Am niaceae. 
On Heracleum. 
On Apium. 
On Cichoriaceae. 
On Carduaceae. 
Spots circular or subcircular in form. 
Spots deciduous, leaving holes or notches in the leaves. 
Spots marginal for the most part; on Ranunculaceae. 
Spots not marginal. 
On Solanaceae. 
On various other hosts. 
Spots not usually deciduous. 
Spots reaching a diameter of 7-10 mm.; on Brassicaceae. 
Spots not usually exceeding 3 or rarely 5 mm. 
Spores 2-2.5 X 3-7 uw; on Malvaceae. 
Spores 2-3 X 4-5 uw: on Carduaceae. 
Spores usually less than 2 u broad, rod-like or bacterioid. 
Spots circular or subcircular in form. 
Spores allantoid. 
On Chenopodiaceae. 
On Brassicaceae. 
Spores not allantoid. 
Spots reaching a diameter of 1 cm.; on Carduaceae. 
Spots not usually exceeding a diameter of 2~3 mm. 
Spots translucent, deciduous; on Geraniaceae. 
Spots not translucent nor usually deciduous. 
On Petiveriaceae. 
On Melastomataceae. 
On Lamiaceae. 
On Carduaceae. 
Spots indefinite or angular in form. : 
Spots small, not usually exceeding 5 mm. in diameter. 
Spots indefinite; on Ranunculaceae. 
Spots angular, bounded by the veinlets of the leaves. 
Spots persistent. 
Spots becoming blackish; on Asclepiadaceae. 
Spots brown or whitish. : 
On Fabaceae. 
On Lamiaceae. 
Spots deciduous; on Lamiaceae. 
Spots large, 1 cm. or more in diameter. 
Spores 1 X 3-4 yp. 
On Ranunculaceae. 
On Carduaceae. 
9 
207. P. Haynaldi. 
208. P. concomitans. 
209. P. Celastri. 
210. P. Euonymi. 
211. P. Myricae. 
212. P. Coryli. 
213. P. mahoniaecola. 
214, P. altheina. 
215. P. hederaecola. 
216. P. latifolia. 
217. P. caricicola. 
218. P. melanoplaca. 
219. P. vagans. 
220. P. hispida, 
221. P. typhina. 
222. P. Caricis. 
223. P. Xanthosomatis, 
224, P. Maurandiae. 
225. P. Oxalidis. 
226. P. Heraclei. 
227. P. Apii. 
228. P. Mulgedii 
229. P. eupatoriicola. 
230. P. Clematidis. 
231. P. perforans. 
232. P. decidua, 
233. P. brassicicola. 
234. P. gossypina, 
235. P. Chrysanthemi. 
236. P. ambrosioides. 
237. P. allantospora. 
238. P. Garrettii. 
239. P. Geranii. 
240, P. Phytolaccae. 
241. P. Rhexiae. 
242. P. palustris. 
243. P. Acanthospermi. 
244. P. ansmonicola. 
245. P. Cornuti. 
246. P. Desmodii. 
247. P. Brunellae. 
248. P. Collinsoniae. 
249, P. Delbhinii. 
250. P. Arnicae. 
