260 



Spot- arid, suborbicular, sometimes with a brownish border. 

 J -j an inch diam. LVrithecia black, those well developed arc con- 

 cave above with a slight elevation in the center. Asci subfusiform, 

 4-8-s.pored. spores densely packed in the asci, oblong, or narrow-ellip- 

 tical, having a little nucleus near each end, 12-15x4 6 JJL. about 

 J as long as wide." 



On leaves of Fraxinus Americana, Albany. X. Y. (Peck). 



Apparently different from Sphazrella fraxinicola, (Schw.) 



L. spinicola, (E. & E.) 



Splurrella spinicola, E. & K. Proc. Acad. Nat. Sci. Phil. July, 1890, p. 231. 



Perithecia scattered or 3-4 together, minute 110-120 p, collaps- 

 ing. visible through the translucent epidermis as minute black specks, 

 fringed around the base with scanty mycelium. Ostiolum papilliform. 

 Asci oblong, sessile, 45x12 /t (p. sp.) Sporidia biseriate, oblong-ellip- 

 tical, continuous, granular, rounded at the ends, 12-15 x 5-6 JJL. 



On spines of Rosa rubiginosa, West Chester, Pa. 



B. On leave* au,d stems of dicotyledonous^ herbaceous plants. 

 L dnerasceiis, (Sehw.) 



Splicer ia ci>iei ascens, Schw. S} - u. N. Am. 1795. 



Sphcerflla cinerascens, Cke. in Journ. Bot. 1883. 



Lfrstadia cineiascens. in Cooke's S>'n. Grev. 18, p. 65 (5227). 



Spots amphigenous, very large, irregular and indeterminate, 

 cinereous below, black above. Perithecia innumerable, crowded on 

 the spots, very small, black, innate, subacuminate, astomous or at 

 length perforated, scattered or collected and arranged so as to repre- 

 sent various engraved or sculptured figures. Asci clavate. Sporidia 

 narrow-elliptical, hyaline, 8 x 2J /*. 



On leaves of Asclepias syriaca, Bethlehem, Pa. 



L. Apocyni, E. & E. Proc. Phil. Acad. 1. c. 



Perithecia gregarious, depressed-spherical, 150-200 rj. diam., per- 

 forated above, covered by the cuticle through which they are visible 

 by translucence. Asci clavate-cylindrical. 40-50 x 10-12 p.. Sporidia 

 crowded-biseriate, oblong, 2-nucleate, obtuse, mostly a little curved. 

 10-15x5-6 ft. 



On dead stems of Apocymtm, London, Canada (Dearness). 



L. depressa. (Pk.) 



Sphcziella deptessa, Pk. 33d Rep. p. 34, (not Sptuzyella depressa, Cke. Journ. Bot. 

 1883, Physalospora depressa, Sacc. Syll. 1709). 



Perithecia numerous, minute, depressed, or even concave when 



