Ervsiphe 217 



Hosts. — AcanthopJiyllnni glandulosuui.AUiagi caiiicloruin (206), 



ficifoli 



viiJius^ Artc- 



viisia Dracunadus^ Astragalus sp"., Capparis spinosa^ Carduus 

 crispus (132), Carlina corymhosa^ C. lanata^ CartJianiits lanatus, 

 Carinthe major (214), Chondrilla juncea^ Cicer songariaiin {206), 

 Clematis songarica^ Cnicits an^e/isis {214), C. cardunctdus, C. lan- 

 ceolatns (55) (132), Coccinca dubia (206), Cynara cardiuiadus^ 

 Daitcus maximus^ Diarthron vcsiculosum (206), Dorycbium hcrha- 

 ceuin (214), Elaeoselimtm Lagascac, Eryugium campcstrc, E. Noe- 

 aiiuj/i (233), Euphorbia lanata^ Exochorda Albcrti (19), Focnicu- 

 lum vulgare, Gmuielia Toiirncforlii^ Haloxylon ammodcndron^ Hap- 

 lophyllum Sicvcrsiamim (206), Hcdysarum Falconeri, Hcliantlicmum 

 oelaudicum^ Imda nervosa, Nepeta podostaeJiys, Odontospermuui 

 aqiiaticum^ Pegamtm Hamala, Phlomis Herba-venti, P. tnberosa 

 (214), Picris hieraeioides, Psoralea drupaeea^ Salsola eanesceus 

 (233). Saiissurea (214), Scutellaria vmlticauUs, Taraxacum mon- 

 tamiui, Tcncrium cliamaedrys, Thcvenotia scdbra {2^1)^ Thymelaea 



'P 



ifolia^ ZygopJiyllum Fabago, 



Distribution, — -Europe : France, Spain, Italy, Greece, Ger- 

 many, Austria-Hungary, Russia. 



Africa : Algeria. 



Asia : Turkey, Syria, Persia, Turkestan, India. 



E. taurica has been much confused with both E, cichoracearum 

 and E, polygoni. From the latter species the very numerous regu- 

 larly bisporous asci at once distinguish it. From the former it is 

 known by the large size of the asci and spores, and from both by 

 the very large concave or "pezizoid'* perithecia. The latter fea- 

 ture, indeed, is so characteristic that it makes E, taurica one of the 

 (g:\v species of the Erysiphaceae which can be safely determined 

 with the lens. 



I am quite convinced that E, Duriaei Lev., E. lanuginosa 



Fckl., E. lichenoides Trab., and if. papilionacearum Kom., all be- 

 long to the present species. E. Duriaei (on species o( Phlomis) and 

 E. papilionacearum (on Astragalus, Psoralea and Cice?') ha\'e been 

 stated to differ from E. taurica in having colored appendages ; the 

 former, also, in possessing only 8 asci. These characters do not 

 hold good. There is a specimen of E. Duriaei m the Kew Her- 



