November, 1888.] 
SYNOPSIS OF HYPOXYLON. 
in 
Yalsa with long necked perithecia and hyaline allantoid sporidia. 
Whether the above described fungus is the Sphceria conflueus, 
Tode can not perhaps now be certainly decided. It agrees 
tolerably with Tode’s fig. but it is not that species as understood 
by Nitschke and described by him (under Ilypoxylon semiim- 
mersum) as having sporidia 16—20 x 8—10 and by Fckl, (under 
the name of H. udum) as having sporidia 28 x 10 micr. We have 
therefore accepted H. Ravenelii , Relim. as a distinct species. 
Hypoxylon? atrofuscum, B. & C.—( Fuckelia atrofusca , B. & 
C. Grev. XII, p. 51.) On bark of Rhus glabra , mountains of 
Virginia. Pustules erumpent, very■'small (hardly J mm. diam.), 
elliptical,, margined by the ruptured bark. Perithecia unequally 
distributed in the black, depressed stroma. Asci cylindrical, 
stipitate. Sporidia elliptical, brown, 13 x 7 micr. 
The following species are placed by Cooke (in Grev. XT, 139) 
under the head of Doubtful and as we have no knowledge of 
them we leave them there: 
IT. glomus, B. & C. 
“ exaratum, Schw. 
Sphaeriostomum, Schw. 
“ hvdnicolum, Schw. 
II. afflatum SclnY. is said by the same author to be allied to 
Diatrype stigma , with hyaline sporidia. 
*HYPOXYLON Bull, (p. p.)—Stroma carbonaceous, subhemis- 
pherical or more or less effused, convex or plane, at first clothed 
with a eonidial growth (mostly some shade of red or yellow), 
finally bare and black. Perithecia peripheric, mostly in a single 
la} r er, more or less immersed in the stroma. Asci cylindrical, 
with paraphyses. Sporidia mostly uniseriate, subovoid, dark- 
colored, continuous. 
DALDINIA, De Not. et Ces.—Stroma superficial, subglobose, 
external layer carbonaceous, becoming black, fibrous within and 
concentrically zoned. Asci cylindrical, 8-spored, pedicellate. 
Sporidia ovoid or oblong, dark colored, Perithecia immersed in 
the stroma, 
Dai.dixia concentrica, (Bolt.)— Sphceria concentrica , Bolt. 
Fungi Hal. tab. 180.—On dead trunks of various deciduous trees. 
Common from New England to California and from Canada to 
Louisiana. 
Stroma subspherical or hemispherical, rarely obovoid, sub- 
ferruginous and softer at first, at length black and carbonaceous, 
*The generic characters were accidentally emitted at the beginning of this synopsis and 
are given here. 
