JOURNAL OF MYCOLOGY. 
Vol. IY. MANHATTAN, KANSAS, SEPTEMBER 1388, No. 9. 
SYNOPSIS OF THE NORTH AMERICAN SPECIES OF HYPOXYLON AND 
NUMMULARIA. 
BY J. B. ELLIS AND BENJA. M. EVERHART, 
(Continued from page 70 .) 
Hypoxylon xanthostromum, Schw. Syn. N. Am. 1212.— 
Seriately erumpent in cracks of decorticated oak limbs, Bethlehem, 
Pa. (Schw.) Seated on a thin crust which is not at all effused. 
In a simple series emerge distinct tubercles, which are sometimes 
confluent for an inch or more, brown-black, rugose, larger mixed 
with smaller ones in the same group; ostiola indistinct. A vertical 
section of the tubercles shows one or more rather large, globose 
perithecia enclosed in the grumose yellow stroma which on the 
outside is black. Sporidia (sec. Cke. 1. c.) 12 x 6 micr. 
Hypoxylon Catalpje, Schw, 1. c.— On bark of Catalpae.. 
Bethlehem, Pa. (Schw.) Seriately erumpent through cracks in 
the bark, of a rusty color at first, then black. Tufts or pulvinuli 
longitudinally confluent. Surface of the stroma granular from the 
underlying perithecia, finally black and rugose. Perithecia 
abundant in the scanty black stroma; ostiola papilliform, de¬ 
ciduous. Sporidia (Cke. 1. c.) 13x6 micr. 
Hypoxylon traxsversum, Schw. (1. c. 1180.)—Transversely 
erumpent through the bark on a trunk of Betula carpinifolia, Mauch 
Chunk, Pa. (Schw.) Large, subpulvinate, subimmersed in the bark 
and protruding in a pulvinate manner above, sometimes angular-tur¬ 
binate. Surface irregularly rugose or even, black. Perithecia 
peripheric, ovate, shining black inside. 'Stroma dark brown, pul¬ 
verulent, one inch long, J inch thick. Ostiola distinctly prominent, 
piano-conic. Sporidia (Cke. 1. c.), 12 x 4 micr, 
Hypoxylon ramosum, Schw. in Grev. XI, p. 132.—On branches, 
Indiana. Convex, erumpent, pulvinate, black, (1 cm.) Perithecia 
subglobose, scattered, black, not prominent, pierced above. Asci 
