IV. 
EXPLANATORY REMARKS, 
to recognize tlieir surpassing elegance and delicate Leanty. Botli in 
form and texture they are the gems of the Fern tribe. 
The descriptions given are not intended to be scientifically complete y 
but to give a good general idea of each kind. 
Where the term pinnate ” is used, the fern is divided quite down to 
the midrib. Where jyinncitificV' is used, there is a membranaceoas 
ma)-gin or icing to the midrib, or main rachis. Where a fern is described 
as “ thiice divided (pinnate ), ” it means that the mam stem or central 
rachis has no winged margin, but that the midrib of the branches and 
branchlets is winged. “Twice divided (hipinnatijid)(' or “thrice 
divided ( tripinnatijiil )," means that the fern has all the midribs wingecf 
■whether divided two or three times. Where “ liighly 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. Three kinds, now alive, are so feeble as to render their 
ultimately growing somewhat doubtful, but of all these we expect fresh 
supplies in the course of next season. One or two other species not 
named, are alive with us, and likely to grow freely, but as yet too small 
to determine certainly. 
Prices on Application. 
York, 11th Mo., 1861. 
JAS. BACKHOUSE, and SON. 
