(i 



!ii 



S. Canto fjtiei in published listi«. The first niiiucd hosts arc those l])»(iU 

 wliich th(> piinisite has been considered distinct liy Kai'le and the 

 writei': the otlieis arc jriveii npon the anthoiity ol' the authors (|Uotcd. 

 The distinction between tiie two species in (juestion is, however, 

 ap[(arently real in the fact that the characteristically larjre, ii're<iular 

 cells of the wall of the jierithcciuui ol' /{). Citxtnynei aie not foinid in 

 those called *S'. Ilin/iitli, and the sjtoiidia of tlie latter constantly 

 averajic lai\<rer than those of the former. The dilVcrence also in the 

 ap]»eiuliiii'es seenis to indicate sjtccilic distinction. Tidasiie's (i<rure 

 (Select Fuufi'. Carp. I, t^di W, hjr. 5*j cleai'ly shows these pecidiarities 

 of S. Ilnntuli, the name then used lor the funiius. The much more 

 abundant mycelium of aS. ^'/»«ow, and the smaller ap|)endn<res suffi- 

 ciently separate that fi'om S. Ilnmuli, thoujih the affinities appear to 

 be (piite as close here as betAveen the latter and S. Ccttitaf/zici, with 

 which only our plant has been confounded. 



This is a very destructive jiariisite, esjiecially on cultivated hops, 

 in the Old as well as in the New World. On raspberries it also does con- 

 siderable damaire, thou<>h in many cnses only the conidia are produced. 



On Geranium muriilatinn the cells of the wall of the jierithccium 

 vary nuich, even in the same mount under the microscope, but the spo- 

 ridia and other characteristics are those of y8. Ilnmuli. 



S. paniiosa, (Wallr.) 



Alpliiloniotplia paiinosa, Wallr. Verhand. d. Naturf. Freiiiide, I, p. 43. 

 lirysihe par-osa, I,k. Specie-; I'laiit. VI, I, p. 104. 

 Muiotiiim Kosaium, Grev. Scott. Crypt. FI. III. p. 164, fig. 2. 

 Splmrotltcca paniiosa, I.ev. Ami. Sci. Nat. XV, p. 13S. 



MAcelium fibundant on the leaves, stems, ctc.,oiten sterile. Pori- 

 thecia more often occurring on the branches, scattered, delicate, 90- 

 100 //, reticuialiions evident, small, 10-15 //; appendajics short and 

 delicate, much interwoven with the mycelium, sometimes colored. 

 Ascus large, delicate, ovate, expanding, when free from the pcrithecium, 

 to a length greatei" than its diameter. Sporidia 8, large, 2!) n long. 



On liosa blatida, li. Arkatisana, li. Iiicida, li. kutnilix, li. 

 imrviflom. Rather common from New England to Calilbrnia (llark- 

 ness), and Texas (Jennings). 



Winter (Die Pilze, II, j). 20) and Saccardo (Syll. Fung. I, p. 2) 

 describe this species with hyaline apijcndages; but Tulasnc (Select 

 Fung. Carp. I, p. 208) descril)es them as colored. They frequently 

 are colored in our specimens. De IJary (Morph. und Phys. der Pilze, 

 II, p. 48) says "colorless or brown at base." 



S. Mali, (Duby). 



F.rysiphe Mali, Duby Bot. Gall. p. 86g. 



Sphinothcca leucotricha, K. & K. Jour. Myc. IV, p. 58. 



Spharotheca Mali, Burrill, (this publication). 



Amphigenous. Mycelium white, submembranaccous, persistent. 



