1890.] Botany. 1199 
North American Species of Tylostoma.—Mr. A. P. Morgan, 
in continuing his papers on the North American Fungi, has made a 
revision of the species of the genus Tylostoma, one of the stalked 
puff-balls. He recognizes five species, two of which are new. The 
species fall under two sections, viz.: (1) Cyclostoma, with circular, 
entire mouth, containing 7. mammosum Mich. an . verrucosum 
Morgan ; and (2) Schizostoma, with irregular, lacerate mouth, contain- 
ing T. fimbriatum Fr., T. campestre Morgan, and T. meyenianum Kl. 
All the species are illustrated by good figures. 
Watson’s Contributions to American Botany.—Contribu- 
tion XVII., issued September 25, consists of miscellaneous notes upon 
North American plants, and descriptions of new species from Northern 
Mexico. In the first asynopsis of the known species of Streptanthus 
is given, twenty-two species being recognized, three of which are de- 
scribed for the first time, 
r. Watson reviews the question of the synonymy of Andropogon 
furcatus Muhl., and says that Lamarck's species, A. provinciadis, ** was 
based upon what was said to be a grass of Provence, in Southern 
France.’ This was in 1783. Gerard, in 1761 figured and described 
the same grass. Both Gerard and Lamarck cite synonyms belonging 
in part to A. ischemum. Both descriptions and figures agree best with 
the A. furcatus of Muhlenberg, which appears to have been grown in 
some of the gardens of Europe at or before Lamarck’s time. “It is 
highly probable, therefore, that the original 4. provincialis, aside from 
its synonymy, and A. furcatus are the same species." However, Dr. 
Watson urges that Muhlenberg’s name should be retained ; the other, 
he says, ‘‘ is a false name, and it cannot be justifiable to make a change 
for the sake of reviving and perpetuating an error.’’ 
A new genus of Rutacex (Sargentia) is characterized, and one 
species (S. greggii ) described, from material collected by Mr. Pringle 
in Northern Mexico. Two other new genera are characterized, viz., 
Rhodosciadium (Umbelliferz), and Jaliscoa (Composite, Eupatoria- 
cez).—CHARLES E. BESSEY. 
New North American Fungi.—Under this title J. B. Ellis and 
B. M. Everhart describe a large number of fungi, in the Proceedings of 
the Academy of Natural Sciences of Philadelphia. Nearly all are 
Ascomycetes, the genera Valsa, Diatrype, Sphzrella, Leptosphzeria, 
Cucurbitaria, Nectria, Plowrightia, and others being represented. 
Two new species of the last-named genus are described, viz., P. staphy- 
Zina, on Staphylea, from London, Canada, and P. symphoricarpi, on 
Symphoricarpus occidentalis, from Montana. 
