— 45 — 



above are tipped in the growing season with golden yellow, transforming the 

 dull, dusky masses into things of beauty. 



There is another moss accredited to this locality which is found asso- 

 ciated with the Antitrichia, viz. Alsia abietina. This moss grows in little 

 plumes three or four inches long, resembling miniature ostrich feathers. 

 When dry the stems curl in on themselves and the plant shuts up, as it 

 were, like a shut hand. I have not found it in fruit. 



Two Orthotricha are found on the trunk and limbs, O . pulchel lian var. 

 leitcodon, and O. speciosuvi. The former is a srriall moss growing in little 

 cushions rarely larger than the end of one's little finger; the latter is a larger 

 moss occurring in masses, an inch or so in diameter. The capsules of pul- 

 cheliiiin are exserted and prominent, while those of speciosinn are hidden 

 under the leaves and one has to look closely to find them. 



In suitable places Alniuin insignc, with its clusters of orange capsules, is 

 found scattered through the mosses of the trunk. Scleropodiiini colophyl- 

 him may be found on uncovered roots. When dry it may be mistaken for a 

 CamptotJiecium. Isothecimn Bi^ewerianuni occurs on the trunk and low 

 decaying branches. When moist large forms of this may be confused with 

 Ajttitrichia. A Brachyt/ieciitm is found occasionally in the lower forks of 

 the tree ; it may be B. rutabulifornic but of this I am not sure. 



Any other pleurocarpus moss, especially if clinging to dead limbs, is very 

 likely to be Isothechim stoloniferniu which is the most common of our tree 

 mosses and varies sufficiently to puzzle even an expert. 



All of these mosses are not confined to the maple alone but are found on 

 other trees as well. The maple is the common meeting place for all of them. 

 Whenever an^ readers of The BRVOi-orxTsT visit this section of the West, they 

 will find it greatly to their advantage to visit a grove of these trees. The 

 species of moss on them make a respectable collection. 



Since writing the above I have found Mniuni JAv/s/V.^// growing on the 

 maple and EKrhync/iiKinpraclongiini on roots washed by running water. 



John W. Bailey, M.D., 



Seattle, Wash. 



SUN PRINTS IN BRYOLOGY-ADDITIONAL NOTES. 



By a. J. Grout. 



The illustration for the Polytrichum article in this number was n^ade by 

 a variation in the method described by Dr. True in The Bryglogist V :May, 

 1902. Instead of the apparatus described, an ordinary photographic frame.' 

 was used. First, the mosses were arranged on the glass in the frame, then 

 the sensitized (solio) paper was carefully laid on these so as not to disturb the 

 arrangement. On the paper was placed a pad made of absorbent cotton 

 backed with pasteboard and covered with lens paper. Then the back of the 

 printing frame was put in and the springs gave sufficient pressure to hold the 

 plants firmly in place and closely pressed against the paper. A deeper frame 

 such as is used in making lantern slides might be better as it would allow of a 



