352 
The text is almost wholly free from typographical errors, that 
which gives the dimensions of Schizzea in feet instead of inches be- 
ing the only one noticed, and serving to call to mind a similar error 
in Gray’s Manual where the dimensions of Solidago altissima is given 
in inches instead of feet, a typographical error so plain that one would 
~ suppose any intelligent botanist would so understand it without any 
ate 
explanation, yet a recent writer has seriously assumed that Prof. 
Gray was in error in representing that plant as only growing seven 
inches high! 
Altogether the present work is a most creditable addition to our 
fern literature, and should be in the hands of all Pteridofgists and 
Pteridophils. GBD. 
§ 355. Trapa natans.—I found this plant growing in Fresh Pond, 
Cambridge, Mass., several years ago, and, though it puzzled me at 
first, I soon traced it to the Botanical Garden and to Mr. Louis 
Guerineau, then gardner, who had thrown the seeds into this and 
other ponds. Later I carried seeds of it, and plants of AZarsilia 
guadrifolia which had also been placed in the pond by Mr. Gueri- 
neau, to my friend Minor Pratt, of Concord, Mass., and very well 
remember our placing both seeds and plants in a pond near Sudbury 
River.. Afterwards I think Mr. Pratt distributed more of them, and 
I suspect that the plant of Zrapa natans, mentioned in the July 
Bulletin as having been taken from a pond in Concord, originated 
from seeds thus distributed either by Mr. Pratt or myself. 
I have several times had plants of Zrapa natans that were col- 
lected in the vicinity of Boston, during the present year, brought to 
me for identification, and I have never entertained a doubt as to the 
manner of its introduction into waters outside of the Cambridge 
Botanic Garden. But that so fine a plant as this, with its handsome 
leafy rosettes, and edible nuts, which would, if common, beas attractive 
to boys as hickory nuts now are, can ever become a “nuisance” I 
can scarcely believe. Geo. E. DAVENPORT. 
Boston, Oct., 1879. 
§ 356. Utricularia resupinata, Greene.—The limits of this species 
in Gray’s Manual confine it to “sandy margins of ponds, East 
Maine to Rhode Island.” ‘That Mr. Miller should find it in similar 
situations in Suffolk Co., is not strange; but now Mrs. Charles 
Barnes, of the Syracuse Botanical Club, has found it in the North 
Woods, Fenton’s, No. 4, Lewis Co., New York, Aug., 1879, on ‘the 
marshy shores of a lake, as we are informed. Mrs. Barnes has 
already made “ Fenton’s, No. 4” noted for Bytrychium simplex, vid. 
Davenport’s monograph. : 
_ $357. Gray’s Botanical Text Book. Structural Botany.—A second 
issue from the stereotype plates of this work, bearing the date of 
1880, appeared in October. In it such typographical: corrections 
have been made as had been indicated to the author, and two or 
three small alterations. The author solicits further corrections, typo- 
graphical and other. 
Terms—One Dollar per annum beginning with the January number. For the Botanical 
Director. 40 cents ; three i gee Sor one dollar, or twelve for three ddliars. Vols. I-V., 
with index, and photograph of Dr. Torrey, $3.75. Copies of Constitution and By-Laws’ 
of the Club, 25 cents. Address, WM. H. LEGGETT, 54, Zast 81st Street, New York. Money 
Orders on Station K, NV. ¥. Ali subscriptions or orders filled only on receipt of the money 
The sare os ne pbosergni of ie — Lg the Herbarium, Columbia College 
at 7:30 P. M. ‘anists are invited to attend. Dr. THurBER. the Presiden : 
may be found at 245 Broadway. i “— : f “ ~ id 
