The American Naturalist. 
BOTANY. 
A New Genus of Alg^.— George Murray has recently described 
a curious algae collected by Professor Moseley, the naturalist of the 
" Challenger expedition," on the coast of Japan. It has hitherto been 
considered to be a species of Cladophoro, and was described by Dickie 
under the name of C. coacta. {Jour. Linn. Soc, Botany, Vol. XV., p. 
451). It now turns out to belong to a new genus, to which the name 
of Boodlea has been given. It is a net-like plant, consisting of a mass 
of cylindical cells, joining each other with a great deal of irregularity, 
so as to form a network when viewed in any section. The four ends of 
the branches are provided with curious " tenacula," and it is by these 
that they are joined into the complex network above mentioned. 
The systematic position of Boodlea is considered by Murray to be 
between the jointed genus algae (Cladophorae, and the like) and the 
Siphonise. 
The Collecting and Study of Willows.— Under this title Dr. 
F. Buchanan White writes as follows in the March Journal of Botany. 
" In collecting willows it is of the utmost importance to guard 
against admixture of specimens. The bushes should not only be 
marked, but a note of their situation taken, A good method of mark- 
ing is to cut. Roman numerals on the the bark, but, since this is trou- 
blesome with the higher numbers, the same numbers can be repeated 
when the localities are distinct. To avoid confusion in the vasculum, 
the collector should provide himself with slips of paper (3 or 4 inches 
long), with a slit cut in each. On these the number of the bush and 
indications of its situation are written, and then the specimens thrust 
through the slit and placed in the vasculum. On reaching home, the 
number and other particulars of each bush must be entered in the note- 
book, and the permanent or note-book number (Arabic figures) placed 
opposite it. Then by means of small pieces of paper attach to each 
specimen its permanent number. In this way all risk of mixing speci- 
mens is reduced to a minimum. The permanent numbers of course 
must not — unlike the tree-marks — be used for more than one bush. 
Having attached to each example its number, any particulars which 
can be seen more readily in the fresh than in the dried plant may be 
entered in the note-book. These should include the color of the 
leaves, twigs, stigmas, and anthers ; the nature of the filaments — 
