214 
Choice Ferns for Amateurs. 
D O O DI A — continued. 
D. lunulata. 
A synonym of ~D. media. 
D. media. 
A very pretty greenhouse species, native of Australia 
and New Zealand, and also known as D. lunulata. It has 
spear-shaped fronds Ift. to l^ft. long, l^in. to 3in. broad, 
and borne on slender, smooth stalks of a delicate pink 
colour, 4in. to Gin. long, and scaly at the base. These 
fronds, which when young are of a delicate red colour, 
are of a slenderer and more pendulous habit than those of 
any other Doodia. They are furnished with numerous 
narrow leaflets, which in the barren ones are usually 
bluntish at the point and finely toothed at the margins; 
the upper ones are dilated and connected at the base, 
while those below the middle are heart-shaped and even 
eared on the upper side. The fertile fronds, which are 
usually longer, have their leaflets much narrower, almost 
linear, except at their base, where they are pinnatifid or 
eared above and below. The texture of both kinds of 
fronds is somewhat leathery, and the short, oblong sori 
are disposed in one or two rows, with a considerable 
space between the inner one and the midrib. The whole 
plant is of a bushy habit, the fronds being produced 
from a close, compact crown. There are several varieties 
in commerce, one of the most distinct being D. m. Kun- 
thiana from the Sandwich Islands. 
DORYOPTERIS. See Pteris. 
DRYNARIA. See Polypodium. 
ELAPHOGLOSSUM. See Acrostichum. 
GLEICHENIA. 
Tlie plants comprised in this genus, popularly 
known as Umbrella and Bead Ferns, may be 
differentiated from all other Ferns by their mode of 
growth. From the centre of each frond develops a 
bud that gives birth to a pair of fronds, in all re- 
spects identical with the one from which they were 
evolved. The genus is divided into two sections — 
Eugleichenia and Mertensia. 
In the majority of cases cool treatment is the 
most suitable for these plants, and that with very 
few exceptions they fare best in a house where during 
the winter the temperature falls as low as 45deg. 
