9 



to Britton). 

 Blstrlliutlony and habitat: 



Native; northern U. S. and southern Ganada; on 

 rooks and cliffs* 



PI. of Mon. Go. (Sup.): A.confinis Wats, given 

 for limestone region of Leroy. PI. Buf. Vic: "Aare"; 2 

 stations. G. F.: "Rocks and shale cliffs* frequent. Fall 

 Or. and all the ravines, especially abundant on the high 

 cliffs north of King's ferry". Boc. Herb.: Enfield, fall 

 Or., and $aughannock ravines. Loc. lI-iU- r^,ll 't . 5 



Oollected as follows :- 



^. Fall Cr. ravine, near upper street bridge. 

 3' Hillside at Esty*s Glen. 

 j. Above lake cliffs, about a mile south of 

 Shurger's 61en, on old log near brook. 

 Evidently a plant of open or moderately shaded 

 rocky situations. 

 Diagnosis and variation: 



A.ftla3a >ra is larger, with stem-leaves relatively 

 much broader; A» drtumnondi is quite noticeably glaucous . 

 Striking variations have not been observed^ iAoJu<^~Cta- 



■'--f.-'VC-' 



