196 BOTANICAL GAZETTE [ MARCH 
ALG EXSICCATA. 
Parts 26-29 (nos. 1201-1400) of “Alge aque dulcis exsiccate 
precipue scandinavice, quas adjectis algis marinis chlorophyllaceis et 
phycochromaceis distribuerunt Veit Wittrock, Otto Nordstedt, G. 
Lagerheim,” are now published. The following botanists have given 
most valuable aid by sending alge from different parts of the world 
and by the determination of critical species: J. Anechavaleta, S. Berg- 
gren, K. Bohlin, F. Bérgesen, O: Borge, E. Bornet, A. le Dantec, F. 
Elfving, Ch. Flahault, M. Foslie, M. Gomont, P. Hariot, K. E. Hirn, 
F. Hy, G?Istvanffi, F.R. Kjellman, L. Kolderup-Rosenvinge, C. A. M. 
Lindman, A. Lofgren, G. Malme, C. Ostenfeld-Hansen, W. Sehanistte; 
B. Schréder, W. A.'Setchell, and N. Wille. © — 
_ These four parts contain alge from Sweden, Norway, Spitzbergen, 
Finland, Denmark, Germany, Hungary, Austria, Switzerland, France, 
United States of Anverica, West Indies, Columbia, Ecuador, Brazil, 
Paraguay, Uruguay, Japan, Asia Minor, and New Zealand. 
' The following genera, species, and varieties are new to science: 
Chetobolus lapidicola Lagerheim, Cladophora basiramosa Schmidle, 
Celastrum proboscideum Bohlin, Cosmarium spherosporum Nordst. var. 
strigosum Nordstedt, Loefgrenia anomala Gomont, Gidogonium Lands- 
boroughi (Hass.) Kiitz. var. robustum Wittrock, @. Lindmanianum Witt- 
rock, @. elandicum Wittr. var. subpyriforme Wittrock, @. Wittrockia- 
num Hirn, Spirogyra Malmeana Hirn, S. tuberculata ee ang 
T) aieoneiand sanguinea Lagerheim. 
The diagnoses of the new American species are as follows: 
i Bohlin, nov. spec.—C. coenobiis vel tetraé- 
dricis e 4 cellulis, vel cubicis e es oe — — 10-21 pf; 
cellulis e vertice visi ,extrorsum 
in processus ‘singulos usin productis, scobwae levi, 4-11 p longis . 
65-13 Bw latis ; interstitiis coenobiorum tetraédricorum trigonis, a 
corum tetragonis. 
Aequatorie i in scrobiculo rupis ad Agua clara provinciz del Guayas: 
1894; legit G. Lagerheim. 
LEFGRENIA Gomont, nov. gen.—Planta myxophycea, filamentosa. 
Trichomata evaginata, basi affixa, pilifera, in parte inferiori passim 
ramosa, ramificatione vera. cusses wae: nullz.. a et _ : 
usque adhuc ignota. 
