VI 
EXPLANATORY REMARKS. 
“ Twice divided ( bipinnatifid ')” or “ thrice divided (tripinna- 
tifid),” means that the fern has all the midribs winged, whether 
divided two or three times. Where “ highly divided ” is used, 
the fern is either four times pinnatifid, or once pinnate and three 
times pinnatifid, or twice pinnate and twice pinnatifid, &c. 
All the kinds enumerated in the Catalogue are in our 
possession as living plants. 
PRICES ON APPLICATION. 
JAS. BACKHOUSE and SON. 
York, 1st Mo., 1871. 
