lüü D O R Y O P T E R I S C OL L IN A.
m
p a rted , having linear-lanceolate pinnatifid segments; the inferior
elongate.
Sori linear, continuous; indusium plane.
L en g th of frond from six to ten inches; colour b rig h t
green.
Fronds termina l, adherent to a somewhat creeping rhizoma.
F o r a plan t of this species I am in d eb ted to Messrs. Stansfield,
of Todmorden, aud for fronds to Mr. Thomas Moore, Curator
of th e Chelsea Botanic Gardens, to whom I am also much
in d eb ted for valuable information reg a rd in g the Doi'yopteris
family.
A list of Nu rse rym en supplying this species is omitted, as
it is uncertain wliich F e rn is meant.
T h e illustration is from a frond forwarded b y Mr. Moore.
G E N U 8 V I.
P T E R IS . L i n n æ u s .
T h e family of P te r is lias been very much cut up into groups
and distinct families, some of which are very near neighbours
to P te ris. Of these Air. Smith, in his Catalogue of the F erns
in the Koyal Gardens, Kew, has the following:—
1.— Cryptogramma, ¡x y c x j VLXi-Pteris looking solitary Fern .
2 .— Pellcea, eig h t species.
0.—P la ty lom a , th re e species.
4.—Doryopteris, two species.
5.—P te r is , nineteen species.
6.—Litohrochia, nine species.
7.—-Lonchitis, one species.
Kunze, in his “ In d e x F ilicum ,” has the following: —
!..—Allosorus, fifteen species, including Smith’s genus, Cryp-
togramma, P ellæ a, and P latyloma.
2 .—Lo n ch itis, two species.
3 — P te r is , fifty-two species, including Doryopteris and
Litohrochia.
P re sl, in his “ Tantamen P te rid o g rap h iæ ,” contains:—
1 .—P te r is , an extensive genus.
2 .—Monogonia, one species.
3.— Campteria, six species.
4.—Litohrochia, an extensive genus.
r>.—Amphible stra, two species.
6.— Allosorus, an extensive genus.
7.—Lonchitis, th re e species.
Aloore, in his “ G enera and Species of Cultivated I'c rn s :
1.— Cassebeera, five species.
9.— P la ty lom a , eight species.
3 .—-Doryopteris, th re e species.
4.—Litohroclda, five species.
5.—Lonchitis, one species.
6.—-Campteria, one species.
7.— P te r is , fourteen species.