1921] Taylor, — Additions to the Flora of Mount Desert G7 



Dictyosphaerium pulchellum Wood. 3 Echo Lake, Aug., 1920. 



Moxostroma undulatum Farlg-wii Foslie. Seawall, tide pools, 

 very scarce, Aug., 1920 (T. 3204). 



Chaetosphaeridium Pringsheimii Klebahn. 3 On Oedogonium 

 sp., Echo Lake, Aug., 1920. 



Draparnaldia glomerata (Vauch.) Ag. In a spring, southwest 

 part of the island; exact locality lost, 1915 (T. 3363). 



Herposteiron vermiculoides (Wolle) Collins. On Oedogonium 

 sp. Echo Lake, southern end east of Canada Brook, Aug., 1920 

 (T. 3127). 



Xitella TENT7ISSIMA (Desv.) Coss. & Germ. Southern end of 

 Echo Lake on a sandy bottom, Sept., 1915, seen again, 1920 (T. 

 1531). 



Botrydium granulatum (L.) Grev. Manset, shore of Ice Pond, 

 Aug., 1920 (T. 3117). 



Under the name Lithoihamnion polymorphum L., F. S. Collins in- 

 cludes in the Mount Desert Flora forms which probably are to be 

 recognized as distinct from the Lithothnmnion polymorphum of Linn- 

 aeus. Of these were collected: 



Lithothamniox glaciale Kjellm. Seawall tide pools, Sept., 

 1920 (T. 3205). 



Lithothamnion compactum Kjellm. ( = Phymatolithon compac- 

 tion (Kjellm.) Foslie. Seawall tide pools, Sept., 1920 (T. 3206). 



Riccardia pinguis (L.) S. F. Gray. Upper Hadlock Pond, July, 

 1920, Lorenz. On twigs and humus, cedar swamp on trail between 

 Manset and Bass Harbor, Aug., 1920, Taylor (U. P. 71003, T. 3246). 



Riccardia latifroxs Lindb. Roberts Meadow, July, 1919, 

 Cranberry Heath, July, 1920, Lorenz. On twigs and humus, cedar 

 swamp on trail between Manset and Bass Harbor, Aug., 1920, Taylor 

 (T. 3243). 



Blasia pusilla L. Seal Cove Road near Southwest Harbor, on 

 the sides of a ditch, Aug., 1920 (T. 3248). 



Fossombronia foveolata Lindb. Jordan and Bubbles Ponds, 

 July, 1920, Lorenz, Muddy shore of Ice Pond, Manset, Aug., 1920. 

 Taylor (U. P. 71002, T. 3275). 



Chiloscyphus fragilis (Roth.) SchifTn. Hunter Brook, July, 

 1919, Stanley Brook, July, 1920, Lorenz. Cedar swamp on trail 

 between Manset and Bass Harbor, Aug., 1920 (U. P. 65193, T. 3273). 



Fissidens cristatus Wils. Between the Hadlock Ponds, Sept., 

 1920 (U. P. 71000, T. 3343). 



