CHARACTERS OF TRIBES AND GENERA, 325 
neria, and Camptosorus. The first section contains four 
species, which have free venation; in the other three 
sections the veins anastomose, and are noticed further on. 
Sp. S. vulgare, Sm. (v v.) ; S. Hemionitis, Sw. (v v.). 
S. Hemionitis is found only in the south of Europe, 
while S. vulgare is widely spread throughout the temperate 
regions of the Northern Hemisphere ; it abounds in Europe, 
and in this country is well known as the Hart's-tongue 
Fern, and of which there are numerous abnormal forms, 
no less than 160 being recorded in Mr. Stansfield's Cata- 
logue. For S. Krebsit, Kze. in Schk. Supp., t. 74, see 
Lomaria, 
185.—Drriaziom, Sw, (1800). 
Asplenium sect. Eudiplazium, Hook. Sp. Fil. 
= Vernalion fasciculate, erect or decumbent, acaulose or 
» Sub.arborescent, Fronds simple, pinnate, or bi-tripinnate, 
lito 5 feet high, smooth, rarely pubescent. Veins forked 
or pinnate ; venules free, the whole or the lower venules 
only sporangiferous on both sides, forming binate linear 
. sori, each furnished with a linear indusium, the one opening 
. interiorly, the other exteriorly. 
Type. Asplenium plantagineum, Linn. 
lust. Hook. and Bauer, Gen. Fil, t. 55 B.; Moore, 
Ind, Fil., p. 41 B. ; J. Sm., Ferns, Brit. and For., fig. 
111; Hook. Syn. Fil., t. 4, fig. 38 d. f. 
Ups, = genus differs only from Asplenium in the 
sporangia being produced on both sides of the venules, 
each furnished with its own indusium, thus forming binate 
sori: this character is constant to most of the species, 
especially those with simple or pinnate fronds, but in those 
ih more compound fronds, the binate sori are only found 
the lower exterior venule of one or more of the fascicles, — 
