529 
Iwas enabled through the kindness of Dr. Peck to examine a 
specimen of the fungus which he referred to this species. The 
specimens which I have collected at Ithaca agree perfectly with 
those collected by Dr, Peck. The fungus has occurred again at 
Ithaca during the summer of 1894, on the leaves of the same 
oak tree. 
Fissidens hyalinus in Pennsylvania. 
Fissidens hyalinus, according to Icones Muscorum and _ the 
Manual, is a very rare moss, since it has been found in only two 
places and is extinct in these. We have been able, however, to 
gather small quantities of it in four different places. We first 
met with it growing on the steep banks of a moist shaded ravine, 
along with F. ¢axifolius, and by searching similar ravines, and 
using F. ¢axifolius as a guide, we found it in three other places. 
Possibly then this little moss is more widely distributed than has 
been supposed, and has been simply overlooked on account of its 
insignificant appearance and the small quantity of it growing in 
One spot. 
A more careful search might discover it in many parts of the 
country. The F. /axifolius may serve as a guide. Where this 
_ grows on the moist banks of shaded ravines, our little moss 
may be searched for. The best time for the search is from Sep- 
tember to November, when it is in fruit ; for its red peristome will 
betray its presence to a sharp eye held near the ground. It is a 
good plan to take up slices of earth where smaller plants of 7 
taxifolius grow somewhat loosely, and examine these with the © 
aid of a good magnifying glass. The red peristome of F. hya- 
linus, if it is in fruit, is readily detected, and its leaf is easily recog- 
nized from the fact that it is without a costa, and its large cells 
give it a resemblance to the leaf of Physcomitrium. 
This moss does not grow in thick and wide-spread mats which 
would discover it to the eye notwithstanding its small size; — 
clusters of 20 to 50 plants may be found, but much more fre- | 
wey it grows separnnety, , Atonzo Linn, 
, : gs SiMmONTON. 
| Wasinros AND * michecrmae Coutese, Wasnncr0%, Pi 
