7° BOTANICAL GAZETTE | JULY 
number of novelties which M. Langlassé brought back is rather remark- 
able and indicates the richness of the country in new forms. In the Legu- 
minosae, represented by 237 numbers, M. Micheli finds 26 new species 
and a new genus, Goldmania, the latter described by Mr. J. N. Rose, of 
the U.S. National Museum, while many other of the species listed have only 
recently been published from collections of American botanists. The novel- 
ties are illustrated by twenty-eight elegant lithograph plates.— C. R. B 
A CRITICAL ACCOUNT of the algae of northwestern America by Setchell 
and Gardner® has appeared as one of the admirable publications of the 
University of California, In this paper of 250 pages, with 1o plates, are 
listed all the known species of algae, excluding the diatoms and desmids, 
found north of Cape Flattery to the region of Kotzebue Sound in the Arctic 
coast of Alaska. The authors have had access to a large number of collec- 
tions, many of them gathered by government parties and other expeditions, 
and have themselves visited much of the region. They have handled, 
therefore, probably the largest amount of material ever brought together 
from this region. 
The species are enumerated under the most generally accepted ¢lassifica- 
tion, with explicit references to all the specimens examined, and with critical 
notes on their conditions and peculiarities of structure, habit, and distribution. 
A large number of new species and forms are described and figured. 
Although attention is called to them by printing the names in heavy type, the 
taxcnomic compiler must laboriously pick them out from the main body of 
the account. A list of these new species properly indexed would have 
obviated this difficulty. 
The authors have refused to change names or upset well-established 
nomenclature by the application of arbitrary rules, “holding that a name 
which has been recognized for a quarter of a century, or thereabouts, is to be 
considered fixed and not to be unsettled simply because another may have 
been proposed earlier, but hitherto neglected for good or even for no real 
reasons.” — B. M. Davis. 
NOTES FOR STUDENTS. 
Kny?® finds in three plants (Lupinus albus, Lepidium sativum, Vicia 
sativa) that diffuse daylight retards the growth in length of soil roots, while 
darkness is advantageous to it.— C, R. B. 
ZEILLER describes” the occurrence of species of Zamites, Sphenopteris, 
and Pagiophyllum, from the Upper Jurassic of the province of Catalonia in 
8 SETCHELL, W. A., and Gardner, N. L., Algae of northwestern America. Univ. 
Calif. Pub. Bot. 1: 165-418. pls. 17-27. 1903. 
9 Kny, L., Ueber den Einfluss des Lichtes auf das Wachsthum der Bodenwurzeln. 
Jahrb. Wiss. Bot. 38 : 421-446. 1902. 
*ZEILLER, RENE, Sobra algunas impresiones vegetales del Kimeridgense de 
Santa Maria de Meya. Memor. Real Acad. cienc. y artes Barcelona 
