42 
JOURNAL OF MYCOLOGY. 
[Von. IV, Nos. 4, 5, 
with very little stromatic material interposed, golden yellow at first, 
finally black, about £ mm. in diameter, about ± of the upper part of the 
perithecia projecting; asci cylindrical, 8-spored with filiform paraphyses; 
sporidia uniseriate, narrow-elliptical, brown, mostly 2-nueleate, 12—14 x 
5—7 p. Tlie inner substance of the bark under the stroma is whitened. 
We have no authentic specimens of this species, but the Louisiana speci¬ 
mens agree so well with the description of II. botrys , Kits., that we have 
little hesitation in referring them to it. 
IIypoxylon bicolor, E. & E.— Journ. Mycol., II, p. 88. On dead 
limbs of Quercus wrens , Pointe ’a la Ilache, La. Rev. A. 13. Langlois, 
Ko. 344. Stroma tubercular-hemispherical, about 2 mm. across, scat¬ 
tered, somewhat uneven from the skghtly prominent perithecia, dull fer¬ 
ruginous-purple, becoming darker, within yellow, becoming darker with 
age; ostiola impressed, punctiform ; perithecia subperipheric, closely 
packed, about i mm. in diameter; asci narrow-cylindrical, with a slender 
base, about 100 x G P; sporidia in a single series, narrow-elliptical or sub- 
navicular, pale yellowish at first, then opaque, 1—2-nucleate,9—12x34—4p 
p, ends subacute. Allied to II. fuscum but differs in its impressed ostiola 
and smaller stroma, yellow inside. 
Kote. —Sec. Cooke, in Grev., XI, p. 127, Hypoxylon bicolor , J>. & 0., is 
a Diatn/pe. 
b. Stroma externally black. 
Hypoxylon multiforme, Fi\— On dead birch. K. II (Farlow); K. 
Y. (O. F. Cook); Mich. (Miss Minns); Minnesota (Holway); Canada 
(Macoun). Alnus , Sorbus , Quercus and Castanea are also given as habi¬ 
tats of this species. Stroma erumpent and often margined by the rup¬ 
tured bark of various shapes but on birch usually transversely elongated, 
oblong or elliptical, somewhat flattened above, 1—1£ cm. long by £—£ 
cm. wide or by confluence 4 or more cm. long, dull rusty red at first, 
finally black and smooth ; perithecia irregularly monostichous, rather 
large, globose, distinctly prominent with papilliform ostiola; conidial 
layer dirty yellowish, becoming darker, conidia very small, obovate; asci 
cylindrical, on long pedicels, spore-bearing part 70—90 x 0 p ; paraphyses 
slender, simple, longer than the asci; sporidia'uniseriate, inequilateral- 
oblong, pale brown, 9—104 x Si p (10—12 x 4—5 P, Sacc.) 
Specimens on Alnus sent from British Columbia by I)r. Macoun have 
the stroma depressed-hemispheric, 1 —i cm. across and the perithecia less 
prominent, but the asci and sporidia are the same. 
This is a widely-diffused species, being found throughout Europe, 
also in Kamtschatka and the elevated region of Kepal in central Asia. 
Its range appears to be northward. It is generally found on limbs from 
which the bark has not yet fallen, but is also said to grow on decorticated 
limbs and is then more effused. The specimens we have seen of this 
effused form seem rather to belong to II. rubiginosum. 
