dae. 
think, put down in the books for so low a latitude. There may be - 
many other plants there not found elsewhere around us. I could 
only go occasionaily, at long intervals, and, therefore, no doubt, 
missed finding many. I shall never forget the delight with which 
I recognized the Walking-fern, I had never seen it before except 
in books, and had hoped to obtain a specimen by exchange.” 
_ According to the Manual, a single plant of this fern was found 
growing with Camptosorus and Asplenium ebeneum on limestone 
cliffs on the Schuylkill, near Philadelphia, by R. R. Scott. This 
was in 1861. Prof. Eaton informs us that Mr. Frederic Bourquin 
obtained four more plants in the same place, Oct. 4, 1867. It is to 
be noticed that Camptosorus and Aspenium ebeneum likewise grow 
in Miss Tutwiler’s locality. In the same passage of the Manual, 
Prof. Eaton mentions the Rev. M. G. Berkeley’s opinion that it is a 
hybrid between the two mentioned ferns. Whether this is so, it is 
to be hoped that Prof. Eaton will be enabled to decide by means of 
a fuller series of specimens from Alabama. Mr. Berkeley found the 
spores in the single imperfect specimen communicated to him more 
or less abortive, and draws an argument from that circumstance. As 
Camptosorus and Asplenium ebeneum are frequently found together, 
if they hybridize, it might be expected that more frequent examples 
would occur. On the other hand, the peculiarity of the A.abama 
locality, like that of Scolopendrium in Western New York, would 
‘suggest a relic of an earlier geological age. 
$26. Viola Cucculata, Ait—We picked up in the woods on 
Bergen Point, a day or two since, a monstrous form of this most 
common violet. Of the two specimens gathered, one had four 
petals, and the other five, but each had two spurs. The front petal 
of the one with five was without a spur, but in both cases it was 
the base of the petals next to the anterior one, or where it should 
have been, that was spurred, each spur containing the crested 
filaments of two stamens. As the two specimens gathered were 
some distance apart, we concluded that the monstrosity was not 
rare. The shades of evening put an end to our search for more. 
We recommend others, however, to keep the subject in mind at this 
season when violets abound. It seems worthy of study. We 
may say, while on the subject, that the pollen tubesin the Violacex 
may easily be found in the neck of the style. 
5 27. New or Little-known Ferns from the United States.—No- 2. 
5. Nothoizna Cretacea, Liebmann.—‘ Rootstock oblique, short, 
ceespitose, covered with rigid lanceolate scales having a lacerate 
membranous margin; fronds coriaceous, covered above sparingly, 
beneath most densely, with a subsulphureous waxy powder ; sta k 
1-2 inches long, ebeneous, shining ; lamina 2-3 inches long, quin- 
quangular-cordate, twice—at the base thrice—pinnatifid ; primary. 
Segments Opposite, spreading, lowest ones short stalked, unequal’y 
deltoid-ovate, upper ones sessile, oblong, obtuse, pinnately parted ; 
secondary segments oblong, obtuse, lower ones pinnately parted, — 
those on the inferior side enlarged, ovate-lanceolate ; ultimate divi 
sions oblong, obtuse, slightly crenulate; veins immersed ; sori of a 
