fusca; Coniothyrium minutulum, Leptothyrium chro 
948 Pregress of Botany in the United States in 1880, [December, 
its large flowers are exceedingly variable as to length of corolla 
and style. 
Thomas Meehan’s “ Dimorphic Flowers in Houstonia” and 
“ Cleistogamy in Oxalis acetosella,” and I. C. Martindale’s “ Sex- 
ual Variation in Castanea Americana,’ published in the Proceed- 
ings of the Academy of Natural Sciences of Philadelphia, should 
be noted here as interesting contributions to this department oF 
botany. The “ Notes on the Flowering of Sazifraga sarmentosa, 
by Professor J. E. Todd, in the August Narura cist, are some- 
what more extended than the preceding, and accompanied by 
several wood-cuts. 
“ Nectar and its Uses,” published by Wm. Trelease in the Re- 
port upon Cotton Insects, issued by the Department of Agricul- 
ture, is a carefully prepared essay, bringing together what !s 
known as to the production and uses of the nectar of plants. om 
plate and an excellent list of the books and papers treating of | 
nectar, add to the usefulness of the essay. 
Professor W. J. Beal published in the March number of the 
NATURALIST, some notes on the “ Agency of Insects in Fertilizae 
tion.” These notes were made by students under the guidance 
of the professor, and many of them are admirable. 
Wm. Barbeck, in the Proceedings of the Academy of Natural 
Sciences of Philadelphia, published a paper on “ The Devers 
ment of Lemna,” in which he concludes that in Lemie i 
have an interesting instance of parthenogenesis, there being Bh 
(produced in autumn by a sexual process) from which, during t f 
course of the summer, generation after generation is propagate 
without any further fertilization.” . 
Here should be mentioned Dr. Gray’s note on the . Automat’ 
Movement of the Frond of Asplenium trichomanes,” published . 
the Botanical Gazette for March, and W. K. Higley’s notes = 
“ Carnivorous Plants” (Drosera rotundifolia) in the Deveiare 
number of the same journal. ar 
B. Systematic Botany.—a. Fungi. In the March number ve 
the Botanical Gazette, C. H. Peck described nineteen new SAPS! 
of fungi, mostly from the Eastern United erecal pa we S$.’ 
= ee : . is closely ret 
interesting Stemonitis (S$. Morgani) which is c y sa erm oe 
Phoma albistrata, Phoma colorata, Septoria consocia, no / some? ae ba 
ulare, Discella variabilis, Sporidesmium minutissimum, LOO 
