305 
Note sur une Cyperacee entophile. G. de Lagerheim (Journ. de 
Bot. vii. 181). Dichromena ciliata, Vahl, is the species noted. 
Notes on the Flora of Texas. 1. H. Pammel (Proc. Iowa Acad. 
» Sei. 1892, 62-76). Enumeration of 291 species, with locali- 
ities. 
Notes on the Pollination of Cucurbits. L. H. Pammel (Proc. Iowa 
Acad. Sci. 1892, 79). 
Notes on West American Umbellifere—IIT. Jolin M. Coulter and 
J. N. Rose (Bot. Gaz. xviii. 54-56). 
An account of some of Capt. J. Donnell-Smith’s Guatemala 
plants; Avracacia Luxeana is a new species and Eniantiophylla a 
new genus of one species, &. Heydeana 
Notes on North American Conifere—II. J. G. Lemmon (Erythea, 
i. 134). Notes on Pinus Engelmanni, Carr. and its synonymy. 
Novitates Occidentales—III, Ydward L. Greene (Erythea, i. 125). 
Lsopyrum occidentale, var. coloratum, Ranunculus Californicus, 
var. crasstfolius, Lupinus eminens, L. tricolor, L. propinguus, 
Helianthella castanea and Phacelia imbricata are the new spe- 
cies described. 
_ Gdema of the Tomato. G. F. Atkinson (Cornell Univ. Ag. Exp. 
Sta. Bull. 53). 
This is a swelling of portions of the tomato plant, due to ex- 
cess of water and is a favored by: 1. Insufficient light. 2. 
Excess of soil water. 3. Soil temperature too near that of the 
air. The long nights, short days and cloudy weather of winter 
induce the cedema, especially if the soil is kept wet and of nearly 
the same temperature as the air above. Artificial cedema was 
produced in cut stems when water was forced into them through 
a hydrant hose. This process, and the microscopic structure of 
the abnormal cushions of cedematic plants are well illustrated in — 
eight full page plates. The lack of light, excess of moisture and 
deficient soil temperature develop a weakened condition in the 
plant that may predispose it to attacks from fungi. The unnatu- 
ral enlargement of the cells is a manifest weakness, or in the words © 
of the investigator, « yale can babel themselves to death.” 
B. D. 
