Tr. insciilptum, Cke. Disc of the U. S. p. 32. 



Exsicc. EH. N. A. F. 150. 



Brumpent, slate-colored, gregarious, thin, |-1J mm. long, oblong, 

 elliptical or irregular in shape, closely embraced by the epidermis and 

 scarcely rising above it, margin thin, erect, scarcely incurved, often 

 undulate from the pressure of the ruptured epidermis against it. Asci 

 ventricose, sessile, overtopped by the abundant paraphyses which are 

 olivaceous and conglutinated above. Sporidia inordinate, oblong, uni- 

 septate and constricted, pale at first, soon dark brown, 25-35 x 12 y. 



On dead limbs of Carya, Newfield, N. J. 



** Sporidia 3- or more-septate (Tryblidiella). 



Tr. riifulum, (Spreng.) 



Hysterium rufulum, Spreng. in Vet. Ac. Holm. 1820, p. 20, Fr. S. M. II, p. -584. 

 Hysterium confluens, Kze. in Weig. Exs. 

 Tryblidium confluens, De Not. Pir. 1st. p. 16. 

 Tryblidiella rufula, Sacc. Syll. II, p. 757. 

 Exsicc. Rav. F. Car. II, No. 47. Rav. F. E. 3369. Rab. F. Am. 637. 



Erumpent, oblong, flexuous or subtriangular, smooth, brownish- 

 black; lips swollen, transversely striate, 2-3 mm. long, and 1 mm. 

 wide, disk brick-red. Asci 150-200 x 13-15 //, without paraphyses, 

 clavate-thickened above. Sporidia uniseriate, oblong, 3-septate, 24- 

 30 x 10-12 /jl (30-35 x 10 //, Sacc. in Syll.), scarcely constricted at the 

 septa, reddish-brown, becoming nearly opake. 



On bark of dead limbs, Southern States and California. 



In the fresh state this resembles a Peziza, the disk being nearly 

 orbicular and fully exposed, but when dry, the opposite margins roll 

 together and the plant assumes the aspect of Hysterium with the lips 

 loosely closed. 



Var. microsporum, E. & E., Triblidiella Ellisii, Rehm, in Rab. 

 Krypt. Flora, Discom. p. 235, Exsicc. Ell. N. A. F. 1285, differs from 

 the usual form only in its smaller (18-22 x 6-7 y) sporidia. 



Tr. clavtesporum, Pk. 35th Rep. N. Y. State Mus. p. 143. 



Receptacles, when moist, suborbicular, plane or slightly convex, 

 margined, |-1 mm. diam., black, when dry, more or less contracted, 

 hysteriiform, with thick lips. Asci clavate or cylindrical, 90-112 /u 

 long. Sporidia oblong-clavate, crowded or biseriate, colored, 4-sep- 

 tate, 20-27x7i-10/i. 



On decorticated wood of willows (Salix nigra), Albany, N. Y. 

 (Peck). 





