1910] Evans, — Notes on New England Hepaticae,— VIII — 197 
large and irregular. In most cases they are arranged in only one or 
two layers. They are separated from one another by thin plates of 
green cells and are bounded above by an epidermis one cell thick 
composed of similar cells. The outlines of the air spaces can often 
be seen clearly through the epidermis, and some of them at least 
communicate with the outside air by means of irregular pores. Posti- 
cal scales could not be demonstrated in the material studied, although 
Austin ! states that they sometimes occur. 
The mature capsules of R. membranacea are irregularly scattered 
in the thallus and bulge out from the lower surface. They attain a 
diameter of 0.3-0.45 mm. The spores are oval and dark brown, 
measuring about 40 u in length. The surface is thickly covered over 
with short blunt spines, 2-3 u long, and these are especially numer- 
ous on the convex face. The three triangular faces are indistinct at 
maturity, and there is no wing developed at their junction with the 
convex face. 
Among the New England species of Ricciella, R. crystallina (L.) 
Warnst. seems to be the closest ally of the present species. R. 
crystallina, however, is considerably larger, and the epidermis, which 
is at first continuous over the large intercellular spaces, eventually 
breaks down more or less completely and leaves the photosynthetic 
tissue directly exposed to the air. The upper surface of the thallus 
thus acquires a peculiar spongy appearance. The spores of R. 
crystallina are likewise very different. They are much larger, usually 
70-80 u in diameter, the surface is reticulate, and a delicate wing is 
developed where the triangular faces meet the convex face. 
3. LoPHoziA BADENSIS (Gottsche) Schiffn. Lotos 51: [7]. 1903. 
Jungermannia acuta Lindenb. Nova Acta Caes. Leop.-Carol. 14, 
suppl.: 88. 1829 (in part). J. badensis Gottsche; Rabenhorst, 
Hep. Europ. 95. 1859. On damp limestone rocks. Hartford, 
Vermont (Miss Lorenz). Salisbury, Connecticut (.1. W. E.). The 
discovery of L. badensis in Quebec has recently bten noted by the 
writer? During the past summer Miss Lorenz found the species in 
Vermont, as above recorded, and pointed out the fact that the speci- 
mens from Salisbury, Connecticut, which were reported a few years 
ago as L. Muelleri (Nees) Dumort.,’ also agreed better with L. badensis 
! Hep. Bor.-Amer. 150. 1873. 
? Bryologist 13: 34. 1910. 
3 See Evans, RHopoRA 8: 35. 1906. 
