168 ON A NEW GENUS OF FERNS. 
Gymnogramma in the tribe Polypodiee. 1 therefore propose 
to associate with them another undescribed Asplenium-like 
fern from the island of Jobia, and to form of them the follow- | 
ing genus, Syngramma, which will bear the same relation to 2 
Gymnogramma, that Oxygonium does to Diplazium. Seeing, 
therefore, that it differs from Gymnogramma, only by the 
anastomosing venation, it will, on that account, come under = 
the second section of the tribe Polypodiee, and immediately — 
before Stenosemia. 
SYNGRAMMA, J. Sm. 
Veins forked; venules usually direct and parallel till near 
the margin, then anastomosing, forming one or more aa - 
ginal areoles.  Sporangia medial. Sori linear, oblique 
simple, forked or unequally reticulated, destitute of an ™ 
dusium. = 
Fronds 1 to 2 feet in length, rising from a cæspitose x 
short creeping rhizoma, smooth, simple and entire or pinnate, 
pinne entire 6—8 inches long. 
1. Syngramma vitteformis; fronds simple membra 
slightly undulate, the sterile ones oblong-lanceolate, the fer : 
tile linear-lanceolate, (much larger than the sterile), POW 
attenuated downwards, the sporangia occupying the whos. 
length of the parallel venules and the marginal anastomosins 
ones. (Tab. VII. VIII.) Callipteris vittzeformis J. Sm. M 
Hook, Journ. Bot. vol. iii, p. 409. Oxygonium vittæformés 
J. Sm. in Journ. Bot. vol. iv, p. 178. i 
Hab. Island of Samar, Cuming, n. 329. 
2. S. alismæfolia ; fronds simple oblong-elliptical and acu 
nate rounded or slightly cordate at the base, stipes "y 
tuberculate, sporangia occupying the whole length die 
parallel venules, the marginal anastomosing venules Pi 
sterile. (Tab. VII. VIII. B). Diplazium alismefoliu™ 
Presl in Herb. Nostr., (but not Presl in Reliquie Hess 
Hab. Singapore.— Lobb, 1843. Island of Sorzogon; #7 
3. S. pinnata; fronds pinnate, pinne (6-8 pair) imè 
us 
