712 



variegatum, (B. & C.) 



Hysterium variegatum, B. & C. Grev. IV, p. 12. 

 Hypoderma variegatum, Duby, Hyst. p. 43. 



Innate-superficial, scattered or gregarious, sometimes confluent, 

 linear-elongated, subobtuse, black; lips flat, closely connivent, their 

 edges sometimes slightly raised, so as to leave a very narrow, straight 

 or subflexuous cleft. Asci very minute, clavate, sessile. Sporidia' 

 hyaline, linear, obtuse, inordinate, 48-50 x \\ ft. Paraphyses none. 



On dead branches of Viburnum Opulus and various species of 

 Andromeda, also on Aralia spinosa, North and South Carolina 

 (Ravenel). 



fl. rufilabriim, (B. & C.) 



Hysterium rufilabrum, B. & C. Grev. IV, p. 12. 

 Hypoderma rufilabrum, Sacc. Syil. 5796. 



"Obtuse, elliptical, growing on a pallid spot; lips rufous. Asci 

 clavate. Sporidia shortly fusiform, hyaline, 15 fi long. Sporidia very 

 different from those of neighboring species." 



On twigs of Acer striatum, South Carolina (Ravenel). 



H. Eucalypti, Cke. & Hark. Grev. XIII, p. 21. 



Epiphyllous, gregarious. Perithecia lanceolate or linear, erum- 

 pent-superficial, black; lips rounded, loosely connivent. Asci clavate. 

 Sporidia inordinate, elongated-fusoid, continuous, hyaline, 30 x 3 ju. 



On leaves of Eucalyptus, California (Harkness). 



fl. scirpinura, DC. Fl. Fr. p. 166. 



Hysterium scirpinum, Fr. S. M. II, p. 590. 

 Sphceria Leptostroma, Ehr. Sylv. Berol. p. 29. 

 Fxsicc. Kze F. Sel. 277. Rab. Herb. Mycol. II, p. 262. Thum. M. U. 178. 



Perithecia innate, oblong, straight, depressed, very black, about 

 2 x j mm.; lips forming an elevated ridge, parallel, finally open. 

 Asci fusoid-clavate, 120-140x15-18 //, 8-spored, with abundant fili- 

 form paraphyses. Sporidia "conglobate, fusoid-bacillate, straight or 

 curved, yellowish-hyaline, 40-56 x 5-6 ft, Sacc; 36-40 x 4J-5 //, Rehm. 

 Spermogonial perithecia {Leptostroma scirpinum, Fr.) intermixed. 

 Perithecia orbicular, umbonate in the center, finally deciduous, 150 fi 

 diam. 



On Scirpus validus, Montezuma marshes, N. Y. (Peck). 



Specc. from Peck have asci stipitate, 110-125x10-13 //, and 

 sporidia 30-35 x 4-4 J fi. 



