with new fresh ones if growth conditions are sufficiently 
good. 
The semi-hardy varieties illustrated in this paper are 
all included in three genera, Dryopteris, Polystichum, and 
Cyrtomium. Among the sub-tropical forms, ten genera 
are represented. The names used are based on the 
recently adopted standardized list of cultivated plant 
names which has been adopted as official by the various 
florists’ associations and other organizations. At 
present, the trade nomenclature of common cultivated 
plants is in a sad state of confusion, but the newly 
determined list is a long step toward uniformity, though 
it will take considerable time before the information is 
assimilated throughout the body of commercial florists 
at large. 
Semi-hardy varieties 
Cyrtomium falcatum (Plate 3, figure 1). Holly fern. 
The variety illustrated is var. Rochfordianum com- 
paction, introduced by Dreer, a dwarf sport of the 
Rochford variety brought out in England. Another 
variety, Mayi, has forked and crested leaf tips anti 
pinnae. Any of these holly fern varieties are excellent 
for the house; lasting, as well as beautiful. The leaves 
grow in a circle from a scaly crown, after the fashion 
of our wild Christmas fern, but the pinnae of the holly 
fern are much broader, and in the Rochfordianum, 
beautifully ruffled and lobed, dark glossy gieen, one to 
two feet long. Native in Pacific Islands and Asia. 
Polystichum adiantiforme (P. coriaceum, a better known 
name). (Plate 3, figure 2.) Leather fern. 
Another excellent house fern, to which the illustration 
does less than justice. It is tall-growing, with a creeping, 
scaly stem; the leaves, which may reach two to three feet 
in height, are triangular, three- to four-pinnate, and 
extremely tough and lasting. It has been planted in 
Florida to some extent for use in the cut-leaf trade. 
Native in South Africa. 
G 
