16 



SHORTER NOTES 



An Interesting New Station for Geranium sihiricum. — 

 The Siberian crane's bill, Geranium sihiricum L., has until re- 

 cently been established only on Manhattan Island, New York. 

 According to the latest edition of Britton and Brown's " Illustrated 

 Flora of the Northern States and Canada," it has been reported 

 as occurring abundantly along roadsides in the northern part of 

 New York City, no other stations being reported for this species 

 of geranium. 



During the past five years, the writer has noticed this pretty 

 little plant becoming firmly established on the campus and ground 

 of the Pennsylvania State College and in the waste places of the 

 town, until it has become one of the commonest plants in the 

 immediate vicinity. Specimens have been sent to Dr. N. L. 

 Britton, who has verified the identification. Just how the plant 

 was introduced into State College is unknown to the writer. 



Geranium sihiricum is adventive from Asia. 



Albert A. Hansen. 



The Pennsylvania State College 



REVIEWS 



Trelease on Phoradendron* 



The monograph of the genus Phoradendron by Professor 

 Trelease should catch the interest not merely of professional 

 botanists but of amateurs in botany as well for several note- 

 worthy reasons. In the first place the author has long been 

 identified with the development of American botany and es- 

 pecially with the monographing of certain of the more unique 

 American plant groups so that we have come to look with ex- 

 pectancy for his monographs. Then, too, the group here mono- 

 graphed in part — the mistletoes — has a rather unusual interest 



* Trelease, W. The genus Phoradendron. Pp. 1-224 + plates 1-245 and a 

 map. Published by the University of Illinois, Urbana, 111. 1916. Price $2.50, 

 unbound $2.00. 



