17 
My experience in the search of fresh-water alg.^ daring the past 
ten years demonstrates that in New Jersey alone, hardly more than a 
third of the territory has been explored, and even that which has 
been gleaned over and over again usually presents something new and 
interesting wherewith to gratify the student every recurring season. 
The plate which accompanies this is a copy of one of 53 (all colored) 
that I have prepared for a monograph on the Desmids of the United 
States which is now about to go through the press, and to be shortly 
issued to the public. It is the only work of the kind that has been 
published in this country, and will contain all that is known up to 
this period concerning our desmids, the number of which, from 
Wood's t6o described species, I have increased to nearly 
500, and illustrated with more than 1,100 drawings sketched 
by myself, with very few exceptions, from living plants as they pre- 
sented themselves to me in the field of the microscope. The price 
of the work (five dollars) will be about a third, only, of that of sim- 
ilar \yorks published abroad; but, as I am desirous of exciting interest 
in this fascinating study, it is to be offered at a price that will reim- 
burse me for the actual cost incurred, without reference to the time 
and labor that I have bestowed upon it. 
ExPLANATrON OF Plate XLlv.^Tn addition to the species designated in the 
foregoing article, the following desmids are illustrated in the Plate. They are not 
new species but are mostly new to our flora: Figs, i and 2. Siaui'asintm atiafinum. 
Cooke. Figs. 10 and 12. St, m ega cant hum , Lund. Figs. 20 and 2f. St. 
Dickiei, Ralfs. Figs. 24 to 26. St, montindoswn, Bieb. Figs. 27 and 28. St, 
st)ioIatum, Na^g. Figs. 32 lo 35. St, pachyrhynchiumy Nord. 
New Speciesof North American Fungi, 
By J. B. Ellis and B. M. Everhart. 
Rhizoctonia moniliformis. — Yellowish-white inside and out, 
cylindrical, .33-5*'"'' in diameter and constricted at intervals, form- 
ing a loose net-work extending for several inches along the surface 
of the wood, the different parts either directly connate or attenuated 
at one or both ends into white, creeping fibres. Substance carnose 
''^nd firm, but not as tough as in the next species. 
NyssaXog, November 1883. 
Rhizoctonia aurantiaca. — Suborbicular, flattened, i*""^ in di- 
ameter, or, by confluence, 2''"'- or more» loosely attached by a few pale 
creeping fibres, dull liver- color outside, orange-red within, in which 
respect, as well as in its more regular shape, it differs from Rfi, tricolor. 
Ell., which is black outside and red within. 
Found under the bark of a rotten maple- limb at Newfield, N, J., 
at the same time as the preceding species. 
ZvGODKSMUS MURICATU3.— Purplish rose-color, becoming light 
buff, forming orbicular patches of a loose cottony texture, 2-4 
across, or, by confluence, more ; Iiyphte 5-7/^ in diameter, strongly 
muricate roughened, much branched, with a strong zygodesmoid 
joint just above each branch, the extremities of the branches divided 
into numerous oblong cylindrical basidia with four strongly devel- 
oped spicules at their obtuse apices, bearing the subglobose, strongly 
echmulate, 5-6/^ conidia. 
