cells and not from their faces, as is more often the case in other genera. H. 

 sqjiarrosuDi is rather rare, growing in low swampy places in the Adiron- 

 dacks, Berkshires, Green Mountains, White Mountains, and along the Massa- 

 chusetts coast. 



The preceding species are without paraphyllia; in the following they are 

 highly developed. 



5. //. iimbratiDii (Ehrh.) B. & S. has dense paraphyllia, leaves rather 

 small, sharply serrate to apex. They are deeply sulcate or folded, with a 

 strong double nerve. It varies in outward looks, having somewhat the habit 

 of pro I iff rum. In the field one would be more apt to confound it with 

 Pyre/niia/in though this last is a larger and coarser plant. H. utubraiuin 

 is a moss of cool moist mountain woods, and is usually abundant, growing 

 on rocks and ground in wet places in deep woods above 2,000 feet. 



6. H. prolifoiim (L.) Lindb. (//. sfi/riidc/is B. X: S. ) is as easily recog- 

 nized as //. triqi(ci)-inn when once in mind, it having a most distinct habit. 

 The branches are tri-pinnate and closely set, giving it a similar look to some 

 forms of uinhratuni, but its mode of growth is somewhat unusual, and could 







Fig. 4. Hyloconiiioii prolifer-idii y. i. 



not be mistaken for any other species of the genus. The paraphyllia are 

 small and pinnate. We also find spinulose papillae on the back of the 

 leaves. The moss is common on dead trees and fallen logs in moist, cool 

 woods. Its delicate color and feathery aspect makes it our most showy and 

 beautiful Hylocomiinn. 



