Gleichenia—continued. 
sandy peat recommended for the first-named section. They 
require a quantity of water at the roots, though stagnant 
moisture must carefully be avoided. Plants of both 
sections are better for being at all times kept dry over- 
head. One of the most distinct species in the Mertensia 
section is G. pubescens (Fig. 416), which has a peculiar 
cobwebby underside to its handsome frond. 
One of the porcine causes of the scarcity of Gleichenias 
in general collections is attributable to their slow propa- 
gation, as, with the exception of seedlings of G. circinata 
—s spelunce and G. c. semi-vestita of commerce, and of 
G. rwpestris, which have at various times been raised at 
Messrs. J. Veitch’s establishment, the mode of increase 
has always been limited to the division of clumps, an 
operation which is very tedious, extremely hazardous, 
and seldom attended with complete success. 
We have 
Fig. 415. FROND OF GLEICHENIA DICHOTOMA, 
a never heard of seedlings of plants belonging to the 
ertensia section being raised in this country, and that, 
together with the fact that the importations direct from 
their various habitats seldom give entire satisfaction, is 
probably the reason why they are so rare. Moreover, 
the difficulties, real or imaginary, to be encountered in 
the cultivation of Gleichenias haye tended to keep them 
4 out of many collections; but, thanks to successful growers 
2, of these plants having made public the knowledge of their 
requirements, and endeayonred to simplify their culture, 
we are rapidly gaining ground. 
- 1900 SUPPLEMENT—RECENT INTRODUCTIONS, &C. 
Gleichenia—continued. 
Fig 416, PORTION OF FROND OF GLEICHENIA PUBESCENS. 
To the species and varieties described on pp. 72-3, 
Vol. IL., the following should be added: 
G. circinata glauca (glaucous). A synonym of G. c. Mendelli. 
Pic. 417. PORTION OF FROND OF GLEICHENIA CIRCINATA 
SEMI-VESTITA. 
G. c. Mendelli (Mendell’s).* fronds, under-part of the lobes, 
which are perfectly flat, of a beautiful silvery colour. Plant 
much more robust than the type. One of the most distinct 
and free-growing kinds in cultivation. It is shown at Fig. 113, 
p. 73, Vol. IL. (erroneously called semi-vestita). SYN. G. c. glauca, 
The true semi-vestita is shown in Fig. 417. 
