364 



5-septate, brown, 15-20 (mostly 15) x 2| ji, scarcely constricted at the 

 septa, and occasionally with one joint (near the upper end) swollen. 



On dead lierbaceous stems (apparently pf some umbelliferous 

 plant), Utah (S. J. Harkness). 



L. plaiiiiiscula, (Riess.) 



Sptueria planiuscula, Riess. Hedw. I, tab. IV, fig. 7. 

 SphcEria Virginica, C. & K. Grev. VIII, p. 16. 

 Leptosphceria planiuscula^ Ces. & De Not, Schema, p. 61. 

 Hxsicc. Thum. M. U. 1847. — Myc. March'. 2372.— Rehm'Asc. 685.— Ell. N. A. F. 579.— Rab. 

 F. E. 946. . 



Perithecia scattered or gregarious, at first covered by the epider- 

 mis, then bai'e and free, depressed-spherical, 300-400 // diam., black, 

 smooth, shining, glabrous, with a small, flattened, perforated ostiolum. 

 Asci clavate, 105-115x14-16 /i, stipitate, paraphysate. Sporidia 

 biseriate, fusoid, straight, at first uniseptate and nucleate, becoming 

 5-septate and brown, 40-55 x 6-7 ^i. 



On dead stems oi Lepidium Virginicum, Newfield, N. J., and on 

 L. intermedium, Manhattan, Kansas. 



The American specc. agre^ with the form on Cruciferous plants 

 in Rehm's Asc. 1. c. and can hardly be specifically distinct from the 

 usual European form on Solidago Virgaurea. 



L. comat^lla, (C. & E.) 



Sphcsria cotnatella, C. & E- Grev. V, p. 52. 

 Leptosphceria Asparagi, Pk. 40th Rep. p. 70. 

 Leptosphceria comatella, Sacc. Syll. 2965. 

 Heptameria comatella, Cke. Syn. 4762. 

 Exsicc. Ell. N. A. F. 190. 



G-regarious or scattered. Perithecia ovate, dark brown, covered. 

 Ostiola erumpent, surrounded by short, erect, rigid, black hairs. Asci 

 clavate, subsessile, paraphysate, 8-spored, 75-80x15 /i. Sporidia 

 crowded-biseriate, abruptly fiisiform, 5-septate, constricted at the 

 septa, hyaline, at length brown, 20-25 x 7-8 // (35-40 x 9 //, Cke.). , 



On various dead herbaceous stems. Asparagus, Verbascum, 

 Gerardia, Dcsmodium, Baptisia, Phaseolus (cult.), Daucus, Tan- 

 aceturn, and Arulia, Newfield, N. J. 



Var. Lespedezoi, E. & E., has the sporidia 6-7-septate, 35x8 /i, 

 slightly curved, with one of the joints swollen. The bristles around 

 the ostiolum are sometimes wanting. 



L. Mertensise, (Ell.) 



SphcEYia Mertensiis, Ell. Bull. Torr. Bot. Club, VIII, p. go. 

 Leptosphceria Mevtensics^ Sacc. Syll. 2972. 

 Heptatneri<s Mertensics, Cke. Syn. 4772. 



Perithecia subcuticular, at length erumpent, about \ mm. diam.^ 



