30 
heliotype portrait accompanies the article, and some of the letters 
and congratulations received by the Doctor on his seventy-fifth 
birthday are appended. 
Bidens. —Barbed Awns of Achenia of. J. L. Zabriskie. (Jour. 
ING Ya: Mic S0e.s1.,°pp." 198; 199:) 
Entomophthora.—A new larval. J.C. Arthur. (Bot. Gazette, 
xi, pp. 14-17.) 
This hitherto undescribed fungus is parasitic in the larve of 
the clover-leaf weevil (Phytonomus punctatus, Fabr.) and has 
been noticed in Western New York and the adjacent portions of 
Canada. Prof. Arthur gives it the name &. Phytonomi, and 
describes and figures the spores, hyphae, mycelium, etc. 
Erigeron Muirii, Gray, n. sp. 
A woodcut figure may be found in the Report of the Cruise 
of the U. S. Revenue Steamer “Thomas Corwin,” in the Arctic 
Ocean, 1881, Washington, 1885, p. 146. There is also a helio- 
type plate of the lichens Cladonia uncialis, C. gracilis, C. ran- 
giferina, and C. cornucopoides. 
Dispersion of some Tree Seeds. W. J. Beal. (Bot. Gazette, xi., 
po. 17; 15.) 
Mildews of the Grapevine. C. V. Riley. (Rural New Yorker, 
e CRIV: | pp 72; 73,2 Hes.) 
Lobelia syphilitica.—Cross-fertilizing apparatus of. J. L. Za- 
briskie. (Jour. N. Y. Mic. Soc., i., pp. 201, 202.) 
Pollen Spores of Tradescantia Virginica, L. John M. Coulter 
and J. N. Rose. (Bot. Gazette, xi., pp. 10-14, one plate.) 
These pollen grains were found exceptionally favorable for — 
study; the presence of two nuclei was readily demonstrated, the 
growth of the pollen-tube watched, and the descent of the nuclei 
therein observed. The grains were cultivated in a moist cham- 
ber, in a hanging drop of a solution of cane sugar. In less than | 
half an hour the pollen-tube begins its development, and may be | 
seen forcing its way through the extine of the grain. The gen- 
erative nucleus is a large worm-like spindle, and enters the tube 
some time in advance of the vegetative nucleus. 
Superposed Buds. A. F. Foerste. (Bull. Scientif. Lab. Denison 
University, i., pp. 25-36, one plate.) 
An interesting and well-illustrated paper on the morphology 
