578 



A. picaceum, (C. & E.) 



Sphtzria picacea, C. & E. Grev. VII, p. 9. 

 Anthostoma picacea, C. & E. Cke. Syn. 4207 

 A nthostomella? picacea, Sacc. Syll. 1093. 

 Exsicc. EH. N. A. F. 183. 



Perithecia subgregarious, globose, deeply buried in the wood, 

 which is blackened in patches on the surface and pierced by the 

 minute, erumpent ostiola. Asci cylindrical, p. sp. 50-55 x 5-6 //, par- 

 aphysate. Sporidia uniseriate or partly biseriate, oblong-cylindrical, 

 brown, with a single nucleus, obtuse, 8-10x3-3! fx (10x4 /i, Cke.). 



On decorticated limbs of Vaceinium and Acer, Newfield, N. J. 



A. gigasporum, Cke. & Hark. Grev. XIII, p. 18. 



Scattered, subimmersed, covered by a raised, globose tubercle 

 formed from the substance of the matrix. Perithecia globose, large 

 (1J-2 mm.), black-punctate, with an obtuse ostiolum. Asci ample, 

 saccate, 8-spored. Sporidia elongated-elliptical, slightly narrowed at 

 the ends, continuous, dark brown, 65-80 x 25-30 ti. 



On decorticated twigs, California (Harkness). 



In habit resembling Sj)hmria cubicularis, Fr., but with much 

 larger sporidia, and, as in that species, the perithecia fall out, leaving 

 cavities not unlike a large Stictis. 



A. pulviniceps, Pk. (in Uteris). 



Perithecia 8-12 in a pustule, sunk to the wood, covered by the 

 bark. Ostiola erumpent, crowded, prominent, black, forming a cushion- 

 shaped mass. Asci clavate. Sporidia crowded, subelliptical or broadly 

 fusiform, multinucleate, slightly colored, 10-15 ti long. 



On dead stems of Sambucus Canadensis, New York (Peck). 



A. flavoviride, Ell. & Holw. Geol. Survey of Minn. Bull. No. 3 r 

 1886, p. 32. 



Stroma effused, thin, 1-3 x |-1 inches, more or less, covered at 

 first with a thin coat of greenish-yellow, short, matted hyphse, bearing 

 small (1-1J /*), subglobose, subhyaline conidia, but finally bare and 

 black. Perithecia membranaceous, black, globose, (J mm.), sunk in 

 the scarcely altered substance of the wood, contracted above into short, 

 narrow necks with their black, papilliform ostiola erumpent. Asci 

 (p. sp.) 75x6-7 /i, or with the slender base 120 tt long. Sporidia 

 uniseriate, narrow-elliptical, continuous, nearly hyaline at first, becom- 

 ing dark, 10-12 x4-4J /i. The stroma is limited by a dark, circum- 

 scribing line penetrating the wood. 



On decaying poplar wood, Vermilion Lake, Minn. (Holway). 



