1893.] NATURAL SCIENCES OF PHILADELPHIA. 135 



Sphaerella lycii E. & E. 



On living leaves of Lycium vulgare, London, Canada. Aug., 

 1892. (Dearness, No. 1,984.) 



Maculicolous, epiphyllous, on small (1-1 5 mm.), definite, thin 

 round, white spots. Perithecia subdiscoid, black, about £ mm. diam. 

 few on a spot. Asci 35-45 x 10,«, oblong-clavate, 8-spored. Sporidia 

 biseriate, oblong-fusoid, inequilateral, hyaline, subobtuse at the ends, 

 (becoming uniseptate) ? 12-15 x 5-6/x. 



Pleospora carpinicola E. & E. 



On dead limbs of Carpinus americana, London, Canada. April, 

 1892. (Dearness, No. 1,738.) 



Perithecia buried in the bark, gregarious, depressed-globose, 

 covered by the epidermis which is raised into distinct pustules and 

 barely pierced by the papilliform ostiolum. Asci cylindrical, short- 

 stipitate, 100-110x8-9/./., paraphysate. Sporidia uniseriate, ellip- 

 tical, obtusely pointed at the ends, 3-septate, constricted at the 

 middle septum, one or two of the inner cells divided by a longitu- 

 dinal septum, pale yellow, 14-16 x 7-8//, ends obtusely pointed. 



Pleospora decipiens E. & E. 



On decorticated, bleached wood of Azalea, Newfield, N. J. June, 

 1877, with Cheiromyces comatus E. & E. 



Perithecia gregarious, membranaceous, subelliptical, about f mm. 

 diam., convex, collapsing above when dry. Ostiolum indistinct. 

 Asci oblong, 55-65 x 15-20//, sessile, sparingly paraphysate, 4-8- 

 spored. Sporidia subbiseriate, oblong or clavate-oblong, 5-7-septate 

 and muriform, hyaline or slightly tinged with yellow, 35-40 x 10- 

 12//. 



Outwardly this cannot be distinguished from Zignoella diaphana 

 (C. & E.) but that has the sporidia smaller and in all the species 

 seen, including those from Montana and Oregon, only 3-septate. 

 Leptosphseria lasioderma E. & E. 



On dead stems of Artemisia tridentata, Sprucemont, Nevada. 

 Oct., 1892, 8,500 ft. alt. (M. E. Jones, No. 2.) 



Perithecia scattered, erumpent-superficial, hemispherical, £-f 

 mm. diam., perforated above, shagged with a loose coat of brown, 

 continuous, flaccid hairs 100-150 x 5-6/*. Asci clavate-cylindrical, 

 65-75 x 15-20/*. with abundant paraphyses, short-stipitate. Sporidia 

 biseriate, broad oblong-fusoid, slightly curved, 25-30 x 10-12//, 

 golden yellow, somewhat constricted at the septa, and occasionally 

 with a short apiculus at each end. 



