697 



in pseudostipitein contractis"). Duby (1. c.) speaks of a spec, from 

 Herb. Hooker, labeled H. insidens, Klotszch, and which he doubtfully 

 refers to hisZT. complanatum, as having: sporidia 3-6-celled, frequently 

 with one cell (the 2d or 3d) swollen, just as in the specc. of H. in*! 

 dens in Herb. Schw, 



H. lineariforme, Sacc. Syll. II, p. 651. 



Hysterium lineare. Berk. N. Am. Fungi in Grev. IV, p. n. 



With the habit of Glonium lineare, (Fr.), but sporidia fusi- 

 form, strongly constricted in the middle, 37-50 p. long, multiseptate, 

 (colored.) ? 



On wood of Quercus, Gleditschia, and Taxodium, Carolina 

 (Ravenel), on dead wood, New England (Russell). 



H. fiisiger. B. & C. Grev. IV, p. II. 



Elongated, flexuous, lying in various directions. Sporidia fusi- 

 form, with about 8 septa, sometimes strongly curved. 25 p. long. Re- 

 sembling somewhat Mytilidion tortile, and Glonium graphicum, but 

 with very different sporidia. 



Nothing is said of the color of the sporidia in this and the pre- 

 ceding species. 



H. Prostii, Duby, Hyst. p. 26. 



Opegrapha Prostii, Nyl. Prodr. L,ich. p. 154. 

 Hysterium lineare, var. corticola, Fr. Elench. II, p. 140. 

 Hysterium Wallrothii ', Duby, Hyst. p. 25, tab. I, fig. 5. 

 Hysteropatella Prostii, Rhern in Rab. Krypt. Flor. Ill, p. 367. 



Exsicc. Rehm Asc. 75. Kze. F. Sel. 278. Rab. F. E. 748, 1921. Sydow, M. March. 2425. 

 EH. N. A. F. 461. Rehm Asc. 75. 



Innate, at length emergent, scattered or aggregated (hardly 

 crowded), narrow-elliptical, acute, thin, rnembranaceo-carbonaceous, 

 black, brittle; lips at first incurved, then open, exposing the slaty- 

 black, narrow-elliptical disk, so as to resemble in the fresh state a 

 sessile Peziza, small (about 1 mm. long or less). Asci clavate, 70-75 

 x 10-1 2 fji. Paraphyses not abundant. Sporidia biseriate, oblong, 

 straight or curved, pale brown, 3-septate, 12-16 x4-5 p. 



On maple bark, Newfield, N. J., on bark of Pyrus coronaria. 

 Iowa (Holway), Missouri (Demetrio), on bark, Illinois (Seymour,) on 

 inner surface of willow bark, Ohio (Morgan), on bark of elm? New 

 York (Fairroan.) Specc. from Washington (Suksdorf) on bare wood, 

 seem to be this species, but have the sporidia larger, 15-22 x 6-7 /*, 

 and may be different. 

 88 



