1897 ] NORTH AMERICAN SPECIES OF AMBLYSTEGIUM 283 
AMBLYSTEGIUM RIPARIUM FLORIDANUM Ren. & Card. Plate 
XIII. fig. 2. 
SYNON.: Amblystegium riparium var. floridanum Renauld & Cardot, 
Botanical Gazette 14:98. 1889. 
Amblystegium floridanum Renauld & Cardot, Musci. Americe Septen- 
trionalis 58. 1 
YPE in herb. Cardot, Stenay, France. 
Gametophyte small: stems 1 to 2™ long, sparsely branched : 
leaves dinear to lanceolate, 50 to 330m wide by 800 to 1200» long ; 
leaf cells about as in the species in all parts. 
Sporophyte small, 1" long; capsule 1 to 1.5™™ long. 
Hab.: On decaying wood in moist or wet places. Type 
locality Florida and Louisiana. 
North America: Gulf and south Atlanlic states. 
Has the general habit and appearance of the species throughout. May 
be known by its very small size. 
AMBLYSTEGIUM RIPARIUM ABBREVIATUM Br. & Sch. 
SYNON.: Amblystegium riparium abbreviatum Bruch & Schimper, Bry. 
Eur. Ambly. 14. A/.9. f g.zand 2. 1853.—Schimper, Syn. Musc. Eur. (1st ed.) 
598. 1860 (2d ed.) 718. 1876.—De Notaris, Epil. Bry. Ital. 147. 1869.— 
Husnot, Musc. Gall. 363. 1894.—Braithwaite, Brit. Moss. Fl]. 3: 30. 1896. 
Lypnun riparium var. abbreviatum Lesquereux & James, Man. Moss. N. 
Amer. 377. 
Gametophyte with stems and branches short, the former 7 éo 
3™ long, the latter 7™ wie oa leaves as in the species except a 
little smaller in size. 
Sporophyte asin medium forms of the species. 
Type locality, Europe.— Europe and North America. 
Probably this and the preceding variety will have to be omitted when 
more abundant material can be obtained for study. Found occasionally 
with the species. 
AMBLYSTEGIUM RIPARIUM FLACcIDUM (L. & J.) R. & C. 
SyNon.: Alypnum riparium var. flaccidum Lesquereux & James Man. 
Moss. N. Amer. 477. 
Amblystegium riparium var. flaccidum Renauld & Cardot, Musc. Amer. 
Sept. 58. 1893. 
TYPE in herb. James, Harvard University. 
