\ VIALL fRES.S . 



J HiVrRV WALL CRESS. 



A. lorsiita. 

 •i ALPINE ROCK CHESS. 



A. p«*tra>a 



4. BRISTOL KOCK CRESS. 



.5 FRTNOED ROCK CRESS, 



A. ciliala . 



<j TOWER CRESS. 



A.tiuauta . 



PI. n 



