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Pentzia — Peronospora polygoni 



Pontzia 531, 538. — N. A. II, 81 

 Peperomia 613, 644. — II, 138, 271, 

 323 



— obtusifolia 648 



Peplis totraiidra L. II, 153 

 Pereskiopsis J98 

 Peiezia 532, 763. — P. 179 

 Perianthomega Vellozoi 491 

 Pericoiiia N. A. 216 



— Sacchari Johnst. et Stevens* 137, 

 216. — II, 220 



— tenella Sacc* 216 

 Perideridia .365 

 Peridormium 108, 112, 174 



— cerobnini 112. — II, 226 



— coloradeiise 174 



— fusiforme Pech 159, 188. — II, 228 



— Pini (Willd.) Kleb. 110. — II, 218 

 Periplocaeeae 486 

 Peri^poriaceac 107, 180, 191 

 Peiisporiopsis P. Renn. 170 



— Stevens N. G. 165, 216 



— Lantanae Stevens* 165, 216 



— Wriglitii (B. et C.) Stevens* 165, 

 216 



Perisporium P. 216 



— alienum Fr. 230 



— Bromeliae Stevens* 165, 216 



— Meliolae Stevens* 165, 216 



— Paulliniae Stevens* 165, 217 



— portoric-ensis Stevens* 165, 217 



— truncatum Stevens* 165, 217 



— Wrightii B. et C. 216 

 Peristylis 449 



— constricta 449 



— praecox 449 



— — var. robusta 449 



— reflexa 449 



— revoluta 449 

 PeriStylus N. A. II, 43 

 Periiettia 563 



— mueronata 563 

 Peroneutypa N. A. 217 



— heteracanthoides Sacc* 100, 217 

 Peronospora 102, 120, 150. — N. A. 



214. — II, 209, 224, 232, 234, 236, 

 237 



— agrestis Gänmann* 120, 214 



— AUiariae-Wasabi Gihtm* 21 1 



— Alj'bsi-calycini Güuni.* 211 



Peronospora Alyssi-incaui Güiim* 214 



— Aparines Gäiim* 121, 214 



— aquatica Gäum* 121, 214 



— Arabidis-alpinae Gäum* 214 



— Arabidis-glabrac Gäiim* 21 1 



— Arabidis-liirsutae Gäum* 214 



— Arabidis-oxyphyllae Gäum* 214 



— Arabidis-Turritae Gäum* 214 



— Arabidopsidis Gäum* 214 



— arvrnsis Gäum.* 120, 214 



— Barbareae Gäum.* 214 



— Berteroae Gäum.* 214 



— Biscutellae Gäum.* 214 



— borealis Gäum.* 121, 214 



— Brassicae Gäum.* 215 



— Buniadis Gäum.* 215 



— Gäumanniana .laup* 215 



— Calepinae Gäum.* 215 



— calotlieca de Bary 121. — II, 224 



— Camelinae Gäum.* 215 



— Cardamines-laciniatae Gäum.* 215 



— Cheiranthi Gäum.* 215 



— Cborisporae Gäum.* 215 



— Conringiae Gäum.* 215 



— Coronopi Gäum.* 215 



— Dentariac-macropliyllae Gäum.* 215 



— Cheiranthi Gäum.* 215 



— Diplotaxidis Gäum.* 215 



— Drabae Gäum.* 215 



— effusa 115 



— Eropiiilae Gäum.* 215 



— Erucastri Gäum.* 215 



— Erysimi Gäum.* 215 



— galii Fuck. 121 



— Galii-veri Gäum.* 121, 215 



— grisea Ung. 175 



— Hesperidis Gäum.* 215 



— Isatidis Gäum.* 215 



— Lepidii-sativi Gäum.* 215 



— Lopidii-virginici Gäum.* 215 



— Lunariae Gäum.* 215 



— Matthiolae Gäum.* 215 



— Nasturtii-aquatici Gäum.* 216 



— Nasturtli-mo'ntani Gäiim.* 216 



— Nesleae Gäum.* 215 



— nivea 175 



— palustris Gäum.* 120, 215 



— parasitica (Pers.) Fr. 121, 126. — 

 — II, 211, 224 



— polygoni Hals. 158 



