712 



H. variesatum, (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 1 ^ ;«. Paraphyses none. 



On dead branches of Viburnum Opulus and various species of 

 Andromeda, also On Aralia spinosa, North and South Carolina 

 (Ravenel). 



H. rufllabrum, (B. & C.) 



Hysterium rufilabrum, B. & C. Grev. IV, p. I2. 

 Hypoderma rufilabrum, Sacc. Syll. 5796. 



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

 clavate. Sporidia shortly fusiform, hyaline, 15 (i 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 //. 



On leaves of Eucalyptus, California (Harkness). 



H. scirpinum, DC. PI. Pr. p. 166. 



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

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

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



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

 2 X I mm.; lips forming an elevated ridge, parallel, finally open. 

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

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

 curved, yellowish-hyaline, 40-56 x 5-6 //, Sacc; 36-40 x4J-5 yt, Rehm. 

 Spermogonial perithecia {Leptostroma scirpinum, Pr.) intermixed. 

 Perithecia orbiculai-, umbonate in the center, finally deciduous, 150 // 

 diam. 



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



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

 sporidia 30-35 x 4-4| //. 



