366 General Notes. [ June, 
Sets or Atca.— We have received the first fasciculus of Algæ 
Exsiceate Americe Borealis, published by W. G. Farlow, C. L. Ander- 
son, and D. C. Eaton. The present number comprises fifty species, 
principally from Key West and California, and is to be followed by other 
fasciculi, including the greater part of the marine species of the United 
States and some of the more interesting fresh-water alge. The fasciculi 
will be of two different sizes: one of the size of Sullivant’s Musci Cu- 
benses, containing Floridez and Chlorosporex, and the other of the size 
of ordinary herbarium sheets containing the larger Fuci, Laminaria, etc. 
The price of the smaller sized fasciculus is $8.00, and of the larger, 
$12.00. In order to be able to include some of the rarer species in the 
series only a limited number of sets have been prepared, of which a few 
are offered for sale, and may be obtained by addressing Prof. W. G. Far- 
low, 6 Park Square, Boston. 
SAXIFRAGA VirGINIENSIS, flore pleno. — A prettier plant in its way 
than this double-flowered wild Saxifrage we have never seen. It was 
discovered by Mr. Joseph S. Adam, in Canaan, Connecticut, and is a 
perfectly spontaneous production, first noticed as a single plant, but is 
now multiplied into two or three, one of which is given to the Cam- 
bridge Botanic Garden. It is a tall specimen for the species; the stalk 
bearing seventy or eighty flowers; and each one bears as many petals, 
in a full rosette, a quarter inch in diameter, pure white. The inflores- 
cence has the look of double-flowered Spiræa filipendula, or of a variety 
of Cardamine pratensis, which used to be in the gardens. The calyx is 
unchanged, an imperfect pistil is occasionally found in the centre ; but 
the rest of the flower consists of petals only, in many ranks. We trust 
it may be preserved in cultivation. — A. Gray. 
BoranicaL Papers in Recent Perioprcays. — Flora, ‘No. 5. 
Batalin. Mechanism of the Movements of Insect-Eating Plants (con- 
tinued in numbers 7 and 9, but not yet finished). Dr. E. Duby, New 
Mosses. Dr. J. Müller, Lichens from Texas. No. 6. Dr. Scriba, A 
_ Notice of the Life of Dr. F. W. Schultz. F. Buchenau, The Cross- 
Section of the Capsule in the German Junci (with a plate giving the 
transverse sections of 18 species). No.7. Dr. E. Stahl, An Explana- 
tion of Hymenialgonidia. No. 8. H. G. Holle, On the Activity of 
Assimilation in Strelitzia regine. (Not finished in 8 or 9.) 
Botanische Zeitung. No. 11. Notice of Agardhi’s Species, Genera, 
et Ordines Algarum. No.12. R. Caspary. Remarks in regard to the 
Protective Sheath of Vascular Bundles. (Noticing objections to his 
usé of the word protective-sheath (Schutzscheide.) No. 13. R. Cas- 
pary, On Nymphea Zanzibariensis, n. sp. No. 44 Dr. Nowakowski, 
On Conjugation in some Entomophthore. No.15. Otto Kuntze, Pre- 
; liminary Report in regard to Cinchona. (Continued in No. 16.) 
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