118 
Choice Ferns for Amateurs. 
ADIASTIJM— continued 
expiandod. The sori, somewliat varying in length but 
usually oblong in form, are digposed in interrupted patches 
along the whole of the anterior margins of the fertile 
pinnules. 
A. populifolium. 
Synonymous with A. Seemannii. 
A. prisnophyllum. 
Synonymous with A. tetrajphyllum. 
A. pubescens. 
This greenhouse Fern^ native of New Zealand and Aus- 
tralia, though sometimes regarded as synonymous with A. 
hispidulum, is, from a decorative point of view, sufiicientlj 
distinct to be separated from it. Lowe says : " This fern 
has been correctly named puhescens : indeed it is as 
pubescent as it is possible for a Fern to be, the stem being 
quite rough with the vast number of short brown hairs with 
which it is entirely covered.'^ A. puhescens is of much 
larger dimensions than A. hispidulum, as usually seen, the 
leafits being much larger, deep green^ bluntly oblong, wedge- 
shaped at the base, with their margin slightly dented. The 
fronds are nearly all fertile, from 1ft. to l^ft. long, pro- 
duced from a tufted central crown, and are very persistent. 
The kidney-shaped and hairy sori are small, and are dis- 
posed from twelve to sixteen to a leafit, along the upper 
and outer edges only. 
A. regfinse. 
One of the most distinct, and undoubtedly the most 
decorative, of a series of seedlings or supposed hybrids of 
garden origin, comprising the better-known A. rhodopJiyl- 
lum, A. Victorice., &c. The general appearance of all these 
warrants the assumption that they are issue from A. Ghies- 
hreghtii (A. scutum of commerce); but they essentially 
differ in the colour of their young growths and in their 
habit, which latter in all cases is dwarfer and much more 
compact. 
A. Reichenbachii, 
Synonymous with A. Henslovicinum. 
A. reniforme. 
In the shape of its fronds, this very interesting and 
exceedingly distinct, greenhouse species differs from all 
other Adiantums. It has a very limited geographical 
range, for it is not known to have been gathered in a wild 
state in any other places than Madeira, Teneriffe, and 
the Azores. It is an evergreen Fern of comparatively small 
