174 



The conidial stage, Helminthosporiurn Clavariarum, Desm., has 

 conidia elliptical or elongated-elliptical, 1-2-celled, brown, 15-20 x 8 /x 7 

 borne singly or 2-3 together on the ends of the fertile hyphae. 



R. rhyncospora, Hark. Bull. Cal. Acad. Sci. Feb. 1884, p. 42. 



Perithecia densely crowded, g-lobose-conical, superficial, covering 

 large areas, studded all over with short, black spines. Asci 8-spored. 

 cylindrical, 96 x 10 /j>, with filiform paraphyses. Sporidia oval or 

 elliptical, dark brown, continuous, 15-18 x 9 fi, often prolonged above 

 into a curved beak \-\ as long as the body of the sporidium. 



On decorticated branches of Sambucus glauca, California. 



R. foveolata, (B. & C.) 



Sphceria foveolata , B. & C. Cuban Fungi, No. 847. 

 Rosellinia foveolata, Sacc. Syll. 996. 



Perithecia globose, at length collapsing, clothed with rigid hairs, 

 seated on an effused, black stroma composed of hyphas with acutely 

 pointed branches. Sporidia hemispherical, foveolate, 5 /i diani. 



Sporidia resembling the seeds of a Veronica. 



R. arctespora, (C. & E.) 



Sphceria arctespora, C. & B. Grev. V, p. 93. 



Sphceria detonsa, Cke and Sphceria Xylariczspora, C. & F!. Grev. VI, p. 94. 

 Rosellinia arctispora, Sacc. Syll. 984. 

 Fxsicc. EH. N. A. F. 594. 



Perithecia gregarious or crowded, ovate, about J mm. diam. r 

 clothed with a bla^k, farinose tomentum, and with short spines about 

 like those of R. ligniaria. Asci (p. sp.) about 75x6//, with a narrow, 

 stipe-like base. Sporidia overlapping-uniseriate, oblong-fusoid, brown r 

 subinequilateral, 12-14 x3|-4 //, resembling the sporidia of Xylaria. 



On wood of Andromeda, under the bark, Newfield, N. J. 



R. Rattus, (Schw.) 



Sphceria Rattus, Schw. Syn. N. A.m. No. 1535. 



Sphceria ranella, B. & Rav. Grev. IV, p. 107. (sec. Cke. Grev. XVI, p. 17). 



Coniochceta Rattus, Cke. Syn. 2789. 



Rebentischia ranella, Sacc. Syll. 2894. 



Perithecia gregarious or scattered, rather large, very fragile and 

 thin, glabrous, globose-conical, with a subobtuse, black, at length bare 

 ostiolum, which, at first, as well as the perithecium, is covered with a 

 black, densely hairy pellicle, the hairs cinereous-brown and divergent, 

 resembling a rat-skin. When young, the perithecia are immersed, 

 with only the hairs erumpent, but finally they emerge and become 







