900 SPH^RIACEI. 



miiltiseptato. — Fr. ^.J/. ii./>. 506. Berlc. Ann. N.H. no. 189, 

 639*, ^ 11,/. 26. Sow. t. 394,/. 3. Curr. Linn. Trans, xxii. 

 t. 59,/. 133. Cooke exs. no. 264. Sphreria carduorum, Wallr. Fl. 

 Germ.'w.i-). 805. Rhaphidospora carduoimm, Tul. Carp. ii. p. 256. 

 Fckl. Sym. Myc. p. 125. Fckl. exs. no. 786. Rhaphidospora dis- 

 se?mnans, Fckl. exs. no. 780. Ophiobolus disseminans, Reiss. Hedw. 

 1854, no. 6. 



On thistles and burdock. Common. [Up. & Mid. Carolina.] 



The sporidia at first contain numerous nuclei witliout articulations, later, 

 however, the articulations are very manifest, about twenty. One articula- 

 tion swollen, usually the second. 



2703. Sphaeria ulnaspora. Coohe. " Bent- spored nettle 



Sphgeria." 



Fig. 396. 

 Perithecia scattered, covered by the cuticle, depressed, black; 

 mouth large, piercing the cuticle ; asci cylindrical ; sporidia 

 linear, length of the ascus, unequally triseptate and constricted ; 

 joints becoming 2-3 or more septate, without constriction, bent 

 angularly when free, twisted in the ascus, hyaline, yellowish. 



On nettle stems. Shere. 



The perithecia are large and flattened, after the manner of S. doliolum, 

 covered by tlie cuticle, through which they are visible when moist, scarcely 

 when dry. The sporidia are very curious, being twisted near the apex of 

 the ascus, when free they are bent angularly, like a knee joint, with two or 

 three constricted septa at unequal distances. Quite distinct from the fruit 



S. acum inata, and very different from that of *S. coniformis. 



(Fig. 396, sporidium.) 



2704. Sphaeria herpotricha. Fr. " Hairy Grass Sphseria." 



Scattered ; perithecia free, subcorneal, black, covered with 

 decumbent brown hairs ; ostiolum subpapill^eform ; asci long, 

 clavate ; sporidia acicular, very long, containing numerous 

 sporules. — Fr. S.MAi.p.bO^. Fries, exs.no. 62. Rhaphidospora 

 herpotricha, Tul. Carp. ii./). 255. Fckl. Sym. Myc. p. 125. Rha- 

 phidospora Lacroixii, Mont. Syll.p. 251. Fckl. exs. no. 781. 



On dead grass stems, and on Carices. 



