236 BOTANICAL GAZETTE [SEPTEMBER 
Cytology of Entomophthoraceae.—One species of Empusa and four of 
Entomophthora have been studied by Riddle.s> In Entomophthora the division Is 
more or less typically mitotic. During prophase the chromosomes are formed by 
s 
chlamydospore. Cytological conditions indicate that Entomophthora is a more 
highly developed genus than Empusa.—CuHartes J. CHAMBERLAIN. 
Lime and sphagna.—As a result of cultures PAvt, in a preliminary paper,” 
confirms the older and still prevalent idea that the sphagna are very sensitive 
to the presence of CaCO, in the water in which they grow, and controverts the 
pronouncements of WEBER and of GRAEBNER. Sphagnum rubellum se 
sensitive, bearing less than 77™s CaCO, per liter (i. e., 0.0077%); while S. 
recurvum, least sensitive, bears less than 3128, S. rubellum changes its beautiful 
red to a blue, indicating an alkaline reaction, the more clearly the higher the 
lime content of the solution —C. R. B. 
Julianiaceae.—Under this name Hemsiry4™ has established a new family 
of Mexican plants, known at present to contain two genera (Juliania and Ortho- 
pterygium) and five species. Its closest relationships are said to be with the Ans- 
cardiaceae and Cupuliferae; but the final judgment of the author places it m 
linear arrangement between Juglandaceae and Cupuliferae. “The ener 
separation of the sexes and the very great diversity of the floral structure of ms 
sexes, associated with pinnate leaves, offers a combination of characters Pr 
ably without a parallel.”—J. M. C. 
Fossombronia.—Humparey has described? in detail the germination of ra 
spores and the development of the sex organs of a Californian species, F. feed ; 
the first investigation of any member of the genus since LEITGEB’S, aides e 
years ago. No striking anomalies appear. No centrosome was observ re 
any stage of nuclear division; blepharoplasts seem to appear de nove, ee 
Nebenkérper likewise, forming the middle piece of the sperm. The 
are of the pyramidal form described by IkENo in Marchantia, with n0 
between the pair.—cC. R. B. z 
39 RippE, Lincoin W., Contributions to the cytology of the Entomophthoraces*; 
preliminary communication. Rhodora 8:67-68. 1906 h. Bot 
4° Paut, H., Zur Kalkfeindlichkeitsfrage der Torfmoose. Ber. Deutsc™ 
Gesells. .24:148-154. 1906. P ‘. 
4* HemsLey, W. Bortinc, On the Julianiaceae, a new natural order of pla” 
Abstract. Read before Royal Society, London, June 28, 1906. 
42 Humpurey, H. B., The development of Fossombronia longiseta 
of Botany 20:83-108. pls. 5-6. 1906. 
Aust. Annals 
