648 PEEISPORIACEI. 



tacles. — Lev. Ann. Sc. i\^a^. 1851, -ky. p. 135, t. 6,/. 6. Coohe 

 Seem. Journ. t. xlv./. 3. Cooke M.F. ii. ed.}-). 226. Fold. exs. no. 

 726-728. Erijsihe tridanAijla^ Rahli. D. Krypt. Fl.p. 237. Desmz. 

 Ann. Sc. Nat. ser. 3, t. iii.p. 361. Tul. Carp. i,p. 201, t. 4t,f. 11- 

 13. 



On the leaves of Primus domestica. September. 



[Mid. Carolina.] 

 {Fig. 315.) 



1917. Fodosphaexa clandestina. Lev. '' Hawthorn Blight." 



Amphigenous ; conceptacles minute, globose, scattered ; ap- 

 pendages (8-10) equal in length to the diameter of the concep- 

 tacles ; branches short and rounded at their extremities. — Lev. 

 Ann. des Sc. JVat. 1851, xv.^:*. 135, t. 6,/. 5. Cooke Seem. Journ. 

 t. xlv./. 4. Cooke M.F. ii. ed.p. 226. Fckl. exs. no. 729. Erysiphe 

 Oxyacanfhce, D.C. Fl. Fr. y\. p. 106. Duhy. Bot. Gall. d>Q^. Cast. 

 Cat. p. 1^0. Tul. Carp. i. 2^. 202, t. 4:,/. 10. Erysiphe clandestina^ 

 Fr.Sys.Myc. p. 238. 



On the leaves of hawthorn. September. 



Gen. 281. MICR0SFH.S:RIA, Lev. 



Mycelium arachnoid ; ap- 

 pendages straight, dichotomous; 

 branchlets swelling at the tip, or 

 filiform. — Be7'k. Outl.p. 404. 

 {Fig. 316.) 



1918. IVIicrospheexia Ked'wigii. 



Lev. '■ Mealy Guelder-rose Blight." 



Hypophyllous ; mycelium web- 

 like, evanescent ; conceptacles 

 minute, globose, scattered ; ap- 

 pendages few, very little longer 

 than the diameter of the concep- 

 tacles ; sporangia 4, ovate, containing 4 spores. — Lev. Ann. Sc. 

 Nat. 1851, XV. p. 155, t. 8,f. 19. Cooke M.F. p. 219, t. xii./. 243. 

 Calocladia Hedwigii. Fckl. exs. no. 695. 



On leaves of mealy guelder-rose. [Low. Carolina.] 



(Fig. 316, conceptacle magnified.) 



