CULTIVATION IN GREENHOUSES, 
37 
Adiantum sulphur eum. Sulphur-coloured Maiden-hair. 
Introduced along with the last-mentioned by Mr. Veitch, 
and called the Golden Maiden-hair. It grows a foot 
high, and the sulphur powder is on the under-surface. 
The Aspidium group offer a good number of species 
to the care of the greenhouse, some of them well worthy 
of notice. 
The genus Cassebeera contains some beautiful stove 
and greenhouse ferns. It is named after Herr Cassebeer, 
a German botanist, and is closely allied to Pteris. In 
this genus the spore-cases are placed on the summit of 
four veins. They are dwarf ferns. 
The genus Cheilanthes is named from two Greek 
words, signifying lip and flower , because of the shape of 
the involucre : a group of very handsome ferns, never 
enduring that their fronds should be wetted. They require 
a compost of sandy peat with charcoal intermixed, and 
suffer if allowed too much water. 
Cheilanthes micromera. Small -parted Cheilanthes . 
Fronds bipinnate, 9 inches high; pinnules short and 
narrow, the sterile ones notched on the margin ; stems 
black and scaly ; caudex creeping ; sori long and narrow. 
An elegant little fern of a deep milky-green colour. A 
native of Mexico. 
Cheilanthes Micropteris. Small-winged Cheilanthes . 
Fronds pinnate, hairy, very slender, 6 inches long; pinnae 
small, roundish, crowded; stems smooth, dark brown; 
caudex creeping. A neat, pretty little fern, also a native 
of Mexico. 
Cheilanthes geraniifolia bears a striking resemblance 
to the Geranium Rohertianum of our hedgebanks; its 
little fronds are palmate, and the stems brown and wiry. 
It is especially suitable for a Wardian case. 
