260 
each way but not so small at base as at tip of frond; pinnae 12 to 
18 on side alternate stalked, rhomboidal in center, flabellate at tip 
of frond lower side cut straight at right angle to rachis, inner edge 
truncate, upper and outer edges slightly sinuate toothed ; veins, 
two main ones, superior once forked, inferior with 4 to 5 branches, 
lowest branch parallel with inferior edge; sori 1 to 3, generally 2 
at outer end of pinnae, lower one parallel with lower edge of pinna, 
upper one oblique, forming a V with the other, the broad end of 
V opening outward; indusium broad, whitish, distinct, opening 
toward center of pinna, 
Between A. projectum and A. viride, larger than A. projectum 
but with same rooting rachis. Pinnae more rhomboidal than in 
A. viride, less toothed and with fewer sori, which are at outer end 
of pinnae instead of inner end. 
Blue Mt. Peak, Jamaica, growing on trees. Collected by © 
Alexander Moore. 
DRYOPTERIS CONTERMINA BISYMMETROS DN. Vv. 
Stipes about 6 in. long with a few scales at base, rather stout, 
dirty brown, finely pubescent, rachis similar; frond 10-15 in. 
long, 3-6 in. broad, lanceolate, tapering from middle to both ex- 
tremities, pinnate ; end of frond long and narrow, pinnato-entire, 
rigidly chartaceous; upper surface nearly naked, rachis costae and 
costulae on under side densely villose; pinnae narrow, lanceolate, 
spreading, numerous, sessile, alternate to tip of frond, pinnatific 
nearly to midrib, segments blunt, hardly subfalcate, lowest seg- 
ments on superior edge diminished in size, middle pinnae 2 in. long, 
lower pinnae 34-1 in. long with some auricles on stipe below, 
rather remote, several of lowest pairs same shape as frond tapering 
to each end, small upper pinnae entire, connected by narrow wing ; 
veins all free and simple, 6-8 on a side; sori near the edge naked 
or indusium early evanescent. 
Fern Gully, Jamaica, collected by myself. 
This variety differs from D. contermina proper by its more 
rigid texture, its stronger and darker colored stipes and rachis, and 
especially by the shape of the pinnae which are spindle-shaped in- 
stead of having the basal segments enlarged as in D. contermina. 
Both the frond and the segments are spindle-shaped, which was 
the reason for giving it the varietal name of disymmetres. 
POLYPODIUM LEUCOLEPIS n. sp. 
Caudex rather stout, ascending, covered at summit with lan- 
_ ceolate acuminate dark brown ciliate scales; stipes of young 
