go The Botanical Gazette. 
powers of the microscope. Under the highest powers, the 
characters appear to be so different as to be scarcely recog- 
nizable. I, therefore, redescribe the species on this basis. 
The description is drawn from material in the Cornell Uni- 
versity Herbarium, collected at Ithaca in 1879, and sent to 
Dr. Peck, in 1880, for determination. It is labeled ‘‘Areyria 
macrospora Peck, n. sp.,” and is referred to by him in hi ; 
description (Il. c.). 
Plants crowded or gregarious, stipitate, collected on acom- 
monhypothallus. Sporangia globose, or shortly elliptical, deep 
brick-red in color, witha shade of brown. Dehiscence cit 
cumscissile. Hypothallus yellowish-brown, shining, forminga 
broad thin sheet, on which the sporangia stand. The stip? 
equals the sporangium in length, and is dark brown, almost 
black in color. The base of the sporangium after dehiscent 
forms a shallow cup, in the center of which the capillitium® 
loosely attached, much as in A. aduata. The capillitiums 
dense, with the spore-mass deep brick-red in color when fre 
fading to cinnamon brown with age. The capillitial threats 
are about 6 in diameter, and are quite closely combined il 
anet. The markings consist of broad raised bands, clos 
combined in a reticulate manner. The bands are so thick 
that they appear as coarse warts when seen in cross sectiot 
along the edge of the thread. The spores are minutely ve 
rucose, and very large, being 10-13 in diameter. Plate 
figs. I, 3; plate x, fig. 9. sea 
This is a very distinct species, being strikingly diffe 
fromall of ourotherspeciesof Arcyria. Externally the ape 
ance is much like that presented by specimens of 4. 
but the internal characters of the species are recognz@ 
aglance. The large size and peculiar markings of the 
illitial threads, together with the large warted spores; © 
peculiarities which cannot be overlooked. | on 
P Ff fA inerm 
This species seems as yet to be quite rare. _ 
calities known at present are: Copake, Columbia Co; Net 
ton, Rensselaer Co., and Ithaca, Tompkins Co. al BP : 
York. The Copake and Grafton localities are given a 
authority of Dr. C. H. Peck. ’ : 
