Jennings: Notes on Pteridophytes 43 



shore, south of Rossport; in grassy spot at base of granite 

 knob which projects up out of a bog about two miles 

 west of Heron Bay Station. 



After the first experience with Botrychium Lunaria in 

 the field the clannishness of the Botrychia, as Prof. Hop- 

 kins has pointed out (4), was quickly realized and a little 

 observation led to the conclusion that, given an open, 

 rather well-drained, sandy spot with Botrychium Vir- 

 ginianum and Habenaria hyperborea present, the condi- 

 tions were excellent for the discovery of B. lunaria. 

 Later experience showed that these conditions did not 

 always prove the occurrence of J3. lunaria, but 

 B. lunaria was not found in any case without these 

 precise conditions. 



15. Botrychium ternatum var. rutaefolium (A. Br.) 

 D. C. Eaton. 



In low, grassy pasture near Marie Louise Lake, August 

 20, 1912. This station apparently constitutes a con- 

 siderable extension of range to the northwestward for 

 the plant. Gray's Manual says: "Nfd. to s. N. H. and 

 n. Mich.", while North American Flora notes: "Nova 

 Scotia and Quebec to Vermont and Wisconsin." 



16. Botrychium virginianum L. 



Common in moist, rich, mesophytic forests: Ft. Wil- 

 liam; Silver Islet Harbor; Nepigon; Rossport; Heron 

 Bay Station. 



16a. Botrychium virginianum var. gracile (Pursh) 

 D. C. Eaton. 



In primeval arbor-vitae bog, one mile north of Marie 

 Louise Lake, Thunder Bay Peninsula, August 15, 1912. 



