Peronospora Roripae-islandicae— Pezizazeae 



655 



Peronospora Roripae-islandicae Gäum* 

 216 



— saxatilis Gäum* 216 



— Schleideni 175 



— Seymourii Burr. 175 

 ^ sherardiae Fuck. 121 



— silvatica Gäum* 216 



— silvestris Gäum.* 121, 216 



■ — Sisymbrii-intermedii Gäum* 216 



— Sisymbrii-Loeselii Gäum* 216 



— Sisymbrii-officinalis Gäum* 216 



— Sisymbrii-orientalis Gäum.* 216 



— Sisymbrii- Sophias Gäum.* 216 



— Sophiae-pinnatae Gäum.* 216 



— spinatiiae (Grew.) Laub. 115. — II, 

 210, 281 



— Teesdaleae Gäum.* 216 



— Thlaspeos-alpestris* 216 



— Thlaspeos-arvensis Gäum.* 216 



— T'hlaspeos-perfoliati Gäum.* 216 



— Turritidis Gäum.* 216 



— verna Gäum.* 120, 216 



— viciae 175 

 Peronosporales 175 

 Perrieranthus 618 

 Perrierophytum 618 

 Persea americana 589 

 Persoonia II, 295 

 Pertusaria N. A. 7 



— dispar Steiner* 7 



— kotaukensis Wain.* 7 



— laeviganda var. obscurior Wain.* 7 



— subobductans var. cinereo-glauca 

 Wain.* 7 



— trochophora Wain.* 7 

 Perymenium 522 

 Pestalozzia 153 



— funerea Desm. 153 

 Petalidium 476 



Petalocentrum Schltr. N. G. 460. — II, 



43 

 Petalostemon oligophyllus (Torrey) 



Rydberg F. 201 

 Petalostigma quadriloculare 564 



— — var. nigrum Ewart and Davies 

 564 



Petalostyles N. A. II, 122 

 Petasites N. A. II, 81 



— albus X hybridus II, 81 



— niveus Baumg. 317 



Petasites paradoxus (Reiz) Baumg. 317 



— Rechingeri Kay. II, 81 

 Petersia Klotzsch 364 



— Welw. 364 

 Petersianthus 364, 814 

 Petiveria 850 

 Petrea 717 

 Petreovitex 717 

 Petrocallis pyrenaica 546 

 Petrocosmea N. A. II, 111 

 Petroseli'num sativum 714 

 Petteria ramentacea 598 

 Petunia 703, 704 



— integrifolia 698 

 Peucedanum II, 193 



— Brandegei Coult. et Rose II, 193 



— graveolens Wats. II, 193 



— — var. alpinum Wats. II, 193 



— Grayi Coult. et Rose II, 192 



— millefolium Wats. II, 192 



— Parryi Wats. II, 193 



— Simplex Nutt. II, 192 



— triternatum (Pursh) Nutt. II, 192 



— — var. platycarpum Torr. II, 192 

 Peziza 104. — II, 280 



— albo-testacea Desm. 134 



— atrata Pers. var. foliicola Desm, 

 192 



— aurantia 114 



— betulina Alb. et Schiv. 134, 213 



— Cornea B. et Br. 134 



— culmicola Desm. 133 



— Fraxini Schw. 133 



— fumosella C. et E. 222 



— horridula Desm. 133 



— jucundissima Desm. 133, 189 



— labiata Rob. 133 



— lugubris de Not. 133, 194 



— maritima Rob. 134, 189 



— misella Rob. 1.33 



— neglecta Lib. 134 



— nervicola Desm. 134 



— nervisequa Pers. 132, 208 



— nivea Fuck. 189 



— niveola Sacc. 189 



— oedema Desm. 183 



— phalaridis Lib. 133, 183 



— punctiformis Grev. 133, 183 



— umbrinella Desm. 134, 183 

 Pezizazeae 183 



