Botany and Zoology. 245 
ler of Geneva. Palicourea and Cephaelis are reduced to Psycho- 
tria, of which there are 250 Brazilian species, although Mapouria, 
with 68 species, is kept distinct and made to include Geophila. . 
A, G. 
3. Diagnoses Plantarum novarum Asiaticarum: TV. scripsit 
. J. Maximowicz. Mel. Biol. Bull. Acad. Sci. St. Petersb. 1881. 
—It is pleasant to see more of the systematic work of Maximowicz, 
especially when it relates to Japan, as does some of it in the pres- 
ent fasciculus. Hypericum pyramidatum is identified with H. 
Ascyron and with the Japanese species; H. Japonicum of Japan, 
with HZ. mutilum ; but it is remarked that the species in question 
can hardly be that of Linnzeus, on account of a phrase in Mantissa, 
ul, 456. We certify that 7 is the Linnean plant, and also the 
ronovian. And by tracing back the unfortunate addition in the 
Mantissa, made nearly twenty years later: “Folia tam arete cauli 
A. G. 
4. On the Power possessed by Leaves of placing themselves at 
pight-Angles to the direction of Incident Light; by Francts 
A 
“The Power of Movement in Plants,” Mr. Francis Darwin, in this 
atihd 3 plant’s axis is attributed to geotropism and heliotropism, 
rank attributes the position taken by leaves (with one face to the 
sky and the other to the ground) to transverse geotropism and 
