Oct., 1887.] 
ADDITIONS TO HYPOCREACEyE. 
115 
erroneous. The Correct measurement is as here given and is the same as 
marked on the original package. This differs from the ordinary type of 
Hypomyces in the absence of any distinct subiculum. 
Hypomyces aurantius (Pers.)—Specimens of this species were 
found associated with H. polyporinus, Pk., at Newfield, N. J., about the 
first of July, 1887, on old Polyporus versicolor , Fr., on a decaying oak log. 
From the fact that the two species occurred often on the same specimen 
of Polyporus , the suspicion arose that PL. polyporinus might be only the 
earlier stage of growth of H. aurantius , but a careful comparison showed 
that this could hardly be the case. The perithecia of H. aurantius are 
larger (one fourth millim.) and, though somewhat pale at first, soon 
assume a deep orange tint; the mycelium also, which at first stains the 
matrix light yellow, soon assumes the same color as the perithecia. The 
asci, which are narrow-cylindrical, are about 100 x 4 y and the uniseriate, 
partly overlapping, fusoid sporidia are 16—24 x 4—5 with a short 
acumination at each end and the endocbrome more or less distinctly 
divided in the middle. The specimens agree well with those received 
from Dr. Plowright, but the perithecia are rather more pointed above 
than represented in his figure in Grevillea, pi. 150. The conidial stage, 
Diplocladium minus , Bon., was found associated with the ascigerous 
specimens. LI. polyporinus, Pk., has the perithecia smaller (150 y) and 
paler, becoming finally of a pale apricot color. The mycelium also, though 
occasionally of a pale yellow color at first, never assumes the deep orange 
tint seen in H. aurantius. The sporidia of H. polyporinus are of the same 
shape as those of H. aurantius but smaller, mostly about 15 x 3 y. In 
both, the perithecia are distinctly ovate, though in H. aurantius they are 
quite obtuse when young. This last-named species has also been found 
at Vermilion Lake, Minnesota, by Mr. E. W. D. Holway. 
Hypomyces chlorinus, Tul. (?)—Sel. Carp., Ill, 59. Parasitic on 
the mouths of the tubes of some small Boletus. Newfield, N. J., Aug. 16, 
1887. Mycelium white cottony, much branched, forming a thin, white 
coat over the entire surface of the host; conidia golden yellow (under the 
microscope), large, 25—35 x 12—15 y, narrow-elliptical or oblong, marked 
with several longitudinal grooves or st riae and borne singly at the ends of 
the branches of the mycelium. These conidia resemble somewhat an 
old fashioned, long musk melon or an ear of Indian corn; perithecia 
globose, minute (112—120 z'-'-), forming a continuous layer over the tubes 
of the Boletus and extending down the stem, nearly hyaline at first, 
finally light yellow, scarcely projecting above the mycelial layer in which 
they are bedded, presenting very much the appearance of Hypocrea 
citrina; asci cylindrical, about 65 x 3 y ; sporidia uniseriate, hyaline, 
ovate, one-septate, constricted at the septum, 7—9 x 21—3 /', ends rounded. 
Whether the conidial stage noted by Tulasne really belongs here is 
uncertain. The “microconidia” he speaks of, we do not find, nor do we 
notice any green color, but the “macroconidia” above noted agree well in 
size and shape with those described by him, and the habitat [Boletus sub- 
tomentosus, apparently) makes it somewhat probable that the reference of 
our Hypomyces to H. chlorinus may be correct. 
