Selaginella 



Selaginellaceae 



65 



o— ~38 

 Map 56 



Selaginella apoda (L.) Fern. 



6 58 



Map 58 



Isoetes Engelmanni A. Br 



ard's observation of characters which seem to me also to be sufficient 

 to regard this form as a species rather than a variety. These two 

 species have definite geographical ranges which add to this opinion. The 

 range of L. complanatum in North America extends from Newfoundland 

 through the greater part of Canada to Alaska and southward to northern 

 Michigan, northern Wisconsin (not reaching New England), and Wash- 

 ington. L. flabelliforme is much more southern, occurring from New- 

 foundland, Nova Scotia, and the lower valley of the St. Lawrence River 

 westward to Minnesota, southward to North Carolina and Kentucky. 

 Newf. to Minn., southw. to N. C. and Ky. 



7. SELAGINELLACEAE Underw. 

 1. SELAGINELLA Beauv. Selaginella 



Leaves comparatively few, of 2 sizes, 4-ranked, spreading in 2 planes, ovate, acute or 

 cuspidate; plants usually a light green, of a wet or moist habitat 1. S. apoda. 



Leaves very numerous, alike, appressed, widely overlapping, many-ranked, linear- 

 lanceolate, grooved on the back, ending in a slender, whitish awn; plants grayish 

 green, of a very dry habitat 2. S. rupestris. 



1. Selaginella apoda (L.) Fern. (Rhodora 17: 68. 1915.) (Selaginella 

 apus Spring.) Basket Selaginella. Map 56. Occasionally throughout the 

 lake area, becoming infrequent to local in the southern part of the state. 

 It is, no doubt, more frequent than our map indicates. It prefers moist, 

 grassy places and in the lake area it is usually in calcareous, sandy soil. 

 In Dubois County I found it in a low woods in a hard, white clay soil with 

 sweet gum. 



Maine and Ont. to the Rocky Mts., southw. to Fla. and Tex. 



2. Selaginella rupestris (L.) Spring. Rock Selaginella. Map 57. 

 Local. Found only on dry, exposed sandstone rocks and in dry sand in the 

 dune area. It has also been reported from Montgomery County. Under- 

 wood (Proc. Indiana Acad. Sci. 1893: 257. 1894) says the report from 



