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I 
THE GENERA AND SrEC'IES OF CULTIVATED FERNS. 
and hence bloom nrust be sacrificed for a season. "When the plants are thoroughly established, 
to ensure their blooming properly they must be exposed to the full sun from the begirining of 
July until September ; in fact, they should be placed in an open part of the garden where both 
sun and air can act upon them on all sides. Thus treated, such kinds as grandiflora and miniata 
may be made to bloom regularly ; and the more thoroughly the wood is matured, the brighter is 
the colour of the flowers likely to be. — A. 
THE GEXEEA A^D SPECIES OF CULTIVATED EEENS. 
By Mr. J. IIOTJLSTON, Royal Botaxic Garden, Kew ; and Mr. T. MOORE, F.L.S., &c. 
Sub-order— Folyfodixcvm : Tribe — PTEiubEiE. (Sect. I. continued). 
BORYOPTERIS, J. Smith (Pteridis sp. of Authors). — Named from dory, a spear, and ptcris, a Fern, from the 
form of the fronds in one of the species. 
Sort linear, continuous, marginal. Indusium narrow. Venation nearly uniform, internal, reticulated, forming 
elongated oblique areolcs. Fronds from eight to twelve inches high, simple, cordate, lobed or digitate-palmate, 
— j, glabrous, and coriaceous ; stipes and costa ebeneous. — Habit is the primary dis- 
tinction that separates the few species arranged under this genus, from the Lito- 
brochias. In the coriaceous texture of the fronds, and in the smooth ebeneous 
stipes, they agree with many species of Platyloma and Cassebeera, but they are 
readily distinguished from those genera by having a reticulated venation. Fig. 
36 represents part of a frond of D. sagittifolia (med. size). 
1. D. sagiltifolia, J. Smith: Raddi. — A very elegant evergreen stove Fern, 
from Brazil. Fronds simple, sagittate, acute, rather erect, nearly a foot high, 
coriaceous, bright green ; terminal, adherent to a somewhat creeping rhizome. 
Sori linear, continuous ; indusium narrow. Fronds nearly all fertile. 
2. I>. pedmata, J. Smith : Willde- 
now. — A beautiful dwarf evergreen 
stove species, from Brazil. Fronds gla- 
brous, coriaceous, digitately-palmate, 
drooping, one foot high, segments 
linear-acuminate, pinnatifid, and bright 
green. Sori linear, continuous ; indu- 
sium plane. Stipes squamiferous near 
the base, terminal, adherent to a some- 
what creeping rhizome. 
3. XI. collina, J. H. : Raddi.— An 
elegant evergreen stove Fern, from 
Brazil. Fronds glabrous, coriaceous, 
palmate, bright green, six to ten inches high ; the sterile ones three or 
five lohed, with roundish blunt obtuse segments ; the fertile five-parted, 
with linear-lanceolate pinnatifid segments, the inferior elongate. Sori 
linear, continuous; indusium plane. Fronds terminal, adherent to a 
somewhat creeping rhizome. 
Fig. 36. 
\? ITOBROCIIIA, Prcsl (Ftoridis sp. of Authors), 
^J from /ilos, slender, and brocho, to swallow up or absorb ; 
-Named, probably, 
the sori 
being covered by a narrow indusium. 
Sori linear, continuous or interrupted, marginal. Indusium linear, 
narrow. Venation external, elevated, arcuately or angularly anastomos- 
ing, producing unequal areolcs, often only reticulated near the midrib or 
margin. Fronds from one to eight or ten feet high, pinnate or bi-tri- 
pinnate ; ultimate pinna; usually pinnatifid. — This genua contains a con- 
siderable number of species, chiefly found in the tropics, a few, however, 
being mot with in the extra-tropical regions of both hemispheres. They 
have generally large branching compound fronds of a flaccid texture, 
with a superficial anastomosing or reticulated venation, by which they 
are distinguished from Doryopteris. Fig. 37 represents a pinna of L. 
denticulate (med. size). 
1. L. grandifolia, J. Smith: Linnaeus. — A tall evergreen stove Fern, 
fro.n Jamaica. Fronds erect, pinnate, eight or ten feet high ; pinnce membranous, gl 
tig. S7 
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31 
