-63- 



place it. Both species grow on limestone or sandstone rocks, in moist 

 shady hollows or caves, and both are liable to be overlooked, being 

 very minute, only two or three millimeters high. The manual gives 

 only two North American stations for Anodiis Donianus, one at Little Falls, 

 N. Y., Peck; the other at Owen Sound, Canada, J. Macoun ; but Austin also 

 found it at Sparta, N. J., and Wilson Harris discovered two stations for it at 

 Chilson Lake, Essex Co., N. Y., where it grows mixed with a blue- 

 green alga, which is densely coated with lime, and covers the surface of the 

 rock with a gray-green growth, readily mistaken for a lichen. Associ- 

 ated with them were some scattered plants of Myurella Careyana, Gyinnos- 

 tomiim riipesire and Leptobryiim pyiforme; the bright green leaves of Seli- 

 geria stood up among the grey-green alga filaments. The hemispherical or 

 turbinate capsules are less than one-half a millimeter in length, and the pedi- 

 cels seldom more than 2 mm., so that the description in the manual is some- 

 what misleading. They do not mature until late in summer; antheridia and 

 archegonia were found on August 31st, 1900, and no capsules had developed 

 on June 15th, 1901. Elizabeth G. Britton. 



The two stations for Seligeria Doniana on Chilson Lake, referred 

 to above by Mrs. Britton would be easily overlooked as the geologic forma- 

 tion is Laurentian, and one would not be prepared for the thin band of 

 calciferous rock with an outcrop on the Island and another some mile 

 further east in the Devil's Basin. This formation is a mixture of fine 

 yellow silicious sand and magnesiau carbonate of lime, which has a fine 

 sparkling grain when fractured. 



A specimen of the collection made June 15th, 1901, was sent to Prof. 

 Bruce Finck, of Drake University, Iowa, to determine if possible the associ- 

 ated gray-green alga or lichen. He writes to Mrs. Harris, under date 

 July 6th, 1901 : "I found some young adult shoots of some moss but neither 

 protonemata, fungus or lichen. I am not sure that protonemata are not pres- 

 ent as I examined only low slide. The specimen is an alga near Oscillaria. 

 I found numerous filaments with fine sheaths and occasional hormogones." 



The specimens obtained August 31st, 1900, were on less weathered rock and 

 were not associated with such a thick felt of alga or protonemata: the plants 

 were more distinct. Annie Morrill Smith. 



PSEUDOCALIERQON Ren., A NEW SUBGENUS OF HYPNUM. 



By F. Renauld. 



Translated by JOHN M. HOLZINGER. 



Plants inhabiting swampy regions, forming loose tufts, some of the 

 species having the general aspect of certain Harpidia, others reminding 

 one of certain species of Caliergon. Stem without radicles. Leaves im- 

 bricated or distant, more rarely homotropous, obtusely acumitia/e, a 

 character which distinguishes them completely from the two related sub- 



