314 CHARACTERS OF TRIBES AND GENERA. 
Lomaria spondiefolia and L. limoniefolia. This species is 
also remarkable in producing on its sarmentum what may 
be termed an adventitious growth, so unlike the true fronds 
that, without good evidence, it would be difficult to believe 
that they are productions of the same plant. It is about 
3 or 4 inches long, and not unlike some multifid species of 
Davallia or Cheilanthes. Wallich named it Davallia achillei- 
folia (Hook. Sp. Fil., 1, t. 56 d.), seemingly not aware that 
it grew on Stenochlena. Tab. 209 of Beddome's ** Ferns of 
British India" represents a state of this from Burmah. 
Its mode of production may be considered analogous to the 
growth observed on the stipes of some species of Alsophila, 
which Kaulfuss described under the name of Trichomanes ? 
cormophyllum. 
180.—SArPICHLENA, J. Sm. (1841). 
Blechnum sp. Kaulf.; Hook. Sp. Fil. 
Vernation sub-fasciculate, decumbent. Fronds bipinnate, 
flexuose, climbing, indefinite ; pinne 1 to 2 feet long; pinnules 
2 to 8 pairs, linear or broad-lanceolate, acuminate, 6 to 16 
inches long, 3 to 2 inches wide, smooth, shining, entire. Veins 
forked; venules combined in the sterile by a transverse 
marginal vein, and in the fertile by a transverse costal 
vein, which bears the sporangia, forming a linear, trans- 
verse, sub-costal sorus.  Indusium laterally attached on ` d 
the exterior side of the receptacle, involute, vaulted, cylin- 
drical, its base partially sporangiferous, its inner margin ` ` 
free, becoming reflexed, rigid, separating in pieces, after- 
wards increasing in size, 
Type. Blechnum volubile, Kaulj. ae c 
‘Ilst. Hook. and Bauer, Gen. Fil, t. 93; Moore Id. -— 
Fil., p. 12 A. ; J. Sm. Ferns, Brit, and For., fig. 109. ; 
