344 



On Draba hirta and Draba WaMenbergii, Upernivik, Green- 

 land. 



PL pentamera, Karst. Fungi Spetsb. p. 99. 



Perithecia scattered, at first covered by the epidermis, then emerg- 

 ent, subsphasroid, very obtusely conoid or depressed above, subas- 

 tomous, glabrous (rarely beset with straight, jointed, black hairs), 150- 

 250 p. diam. Asci very short-stipitate, clavate, 105-150x24-30 //, 

 8-spored, paraphysate. Sporidia biseriate, ovoid-elliptical, or sub- 

 elongated, 5-septate (rarely 5-6-septate), mostly with one cell divided 

 by a longitudinal septum, scarcely constricted at the septa, brownish, 

 20-24x10-15 p.. 



On Carex, Poa, Agropyrum and Festuca, Greenland. 



PI. vagans, Niessl. Notiz. p. 14. 



Perithecia scattered or seriate, depressed-spherical, dark brown, 

 sparingly fibrillose below, otherwise glabrous, with a small, conical 

 ostiolum. Asci clavate or oblong-clavate, 8-spored, short-stipitate. 

 Sporidia biseriate, oblong or clavate-fusoid, straight or curved, often 

 boat-shaped, 5-septate, with an imperfect longitudinal septum, honey- 

 yellow. 



Var. Arenaria, Niessl. 1. c, has the perithecia tolerably large 

 (250-270 fj. diam.), scarcely erumpent, with a tolerably thick, obtuse, 

 perforated ostiolum. Asci broad, 105-120x21-23/^. Sporidia cla- 

 vate-fusoid, straight, the third cell broader, 27-30 x 9-10 a. 



On Elymus aretiarius, Greenland. The part of the stem occu- 

 pied is often colored brownish. 



PI. platyspora, Sacc. Mich. II, p. 251. 



Perithecia gregarious, at first covered by the epidermis, then 

 nearly free, J mm. diam., globose-depressed, glabrous but with creep- 

 ing hyphas around the base, with a short, conoid ostiolum. Asci cylin- 

 dric-clavate, 100-120x18 /i, short-stipitate, paraphysate, 8-spored. 

 Sporidia biseriate, flattened, 4-septate, not constricted, cells divided by 

 a longitudinal septum, 22-24 x 12-14 p., and 6-7 p thick, straw-yellow, 

 with a gelatinous envelope. 



On Vesicaria, Draba, Arabis, Armeria, Erigeron and Polyg- 

 onum, Greenland. 



