97 
Asplenium rhizophyllum, Kunze, var. Biscaynianum, N. Var. 
e Plate LXVII. 
Fronds narrowly linear-oblong in outline, a foot or more high, 
3% to 1 inch wide; pinne a dozen or more pairs, 8 or Q lines 
long, ascending obliquely, the lowest ones scarcely diminished ; 
all but the uppermost pairs cut into about 7 or 8 lobes, of which the 
lowest superior one is three-lobed, the next one or two two-lobed, 
and the others simple; all closely placed; upper pinne gradually 
smaller and less deeply lobed; sori usually one on each vein and 
elongated. This form has the large ultimate segments of the 
coarser form of the species, from which it differs in the much 
shorter pinne, and consequently in the linear rather than lanceo- 
late outline of the frond. The pinnules an inch or two below the 
apex scarcely differ from those of A. dentatwm, with which, and 
in company with the myrzophyllum form of A. rhizophylluns, it was 
associated, as is explained below by Mr. Isaac Holden, of Bridge- 
port, Conn., who discovered it at Biscayne Bay, Florida, 28th of 
February, 1887. It seems highly probable that it is modified 
from the type by the influence of its associate. 
NEw Haven, April 15th, 1887. DANIEL C. EATON. 
Notes on some Florida Ferns. 
In southern Florida, on the shore of Biscayne Bay, some four 
or five miles south of the Miami River, under a projecting arch 
of the coral limestone, is a well, hollowed in the rock to the depth 
of some five feet or so, with cut steps leading down to the fresh 
water at the bottom. This ancient excavation, believed by some 
to antedate the settlement of St. Augustine, is well known in 
that region as the ‘“‘ Punch Bowl.” By going northerly from this 
v 
point a quarter of a mile, more or less, through the jungle—hum- 
mock, or “hammock,” as it is there called—keeping near the 
slope of the rocks, in which procedure a machete is very useful, 
there is reached a small, comparatively open space in which 
stands a cocoanut tree of a few years’ growth, apparently planted — ; 
there by accident, and of remarkable beauty. A few rods beyond _ 
this tree is a curved recess in the bank of rock which, as I re- 
‘member it, is at that point some five or six feet in height. On 
