PEEISPOEIACEI. 649 



1919. Micxosphaeria penicillata. Lev. *' Guelder-rose 



Blight." 



Amphigenous ; mycelium web -like, efifuse, evanescent ; con- 

 ceptacles scattered, minute, globose ; appendages 8-12, equal 

 to the diameter of the concej)tacle ; sporangia -l, ovate, rostrate, 

 containing 8 spores. — Lev. Ann. Sc. JVat. 1851, xv.p. ] 55, ^ 8, f. 

 21. Cooke M.F. t. xi. /. 234. Fckl. exs. 690, 691. E. Alni, Tul. 

 Carp. i. p. 203, t. 2,/. 5-7. 



On leaves of guelder-rose and aldor. [United States.] 



1920. Microsphseria IVIougeotii. Lev. " Tea-tree Blight." 



Amphigenous ; mycelium web-like, oftentimes persistent ; con- 

 ceptacles minute, scattered or gregarious, globose, at length de- 

 pressed; appendages loosely dichotomous ; sporangia 12-16, on 

 a short pedicel, 2-spored. — Lev. Ann. Sc. Nat. 1851, xv.^. 158,/. 

 9,/. 24. Cooke M.F. p.2\^. 



On leaves of Lycium barharum. October. 



1921. Microsphaeria berberidis. Lev. " Berberry Blight." 



Amphigenous ; mycelium web-like, oftentimes persistent ; 

 conceptacles scattered or gregarious, globose, minute ; append- 

 ages few (5-10) ; branchlets long, divaricate, obtuse at their 

 apices ; sporangia 6, ovate, containing 6-8 spores. — Lev. Ann. 

 Sc. Nat. 1851, XV.;). 159, 1. 10,/. 28. CooJce M.F. t. xi./. 229-232. 

 Cooke exs. no. 95. Fckl. exs. no. 693, E. Berberidis, Tul. Carp. i. 

 p. 204, t. 5,/. 1. E. penicillata. Eng. Fl. v. p. 327 {partly). 



On leaves of berberry. Autumn. 



1922. IVIicrosphaeria grossulaxiae. Lev. " Gooseberry Blight." 



Amphigenous ; mycelium web-like, fugacious or persistent ; 

 conceptacles scattered or gregarious, globose, minute ; append- 

 ages 10-15, vaguely dichotomous, ultimate branchlets bidentate; 

 sporangia 4-8, ovate, containing 4-5 spores. — Lev. Ann. Sc. Nat. 

 1851, xv.p. 160, t. 9,/. 25. Cooke M.F. p. 220. Fckl. exs. no. 697. 

 E. penicillata, Eng. Fl. Y.p. 327 (partly). 



On gooseberry leaves. 



1923. Microsphaeria coxnata. Lev. " Spindle-tree Blight." 



Hypophyllous ; mycelium web-like, fugacious ; conceptacles 

 scattered, minute, globose ; sporanges, 8, ovate, with a beak- 

 like termination at their base, 4-spored; appendages few, six 



2e 5 



