i')02] Pease, — Two New Stations for Arceuthobium 249 



An American Occurrence of the European Centaurea dif- 

 fusa. — As I was riding about a half mile west of the little village of 

 Norfolk, Massachusetts, on July 7th. 1902, in search of Polygala 

 polygama and the hoary pea, which grow beside the road in that local- 

 ity I noticed two peculiar plants. They grew close together near the 

 wheel track on a dry hillside, and were, I think, over a foot tall. I 

 picked two small specimens, but revisited the plants some weeks later 

 and secured larger specimens. On one of these, when kept in water, 

 a white flower came out. A pressed specimen in tiower bud was 

 sent to the Gray Herbarium, where it was identified as Centaurea 

 diffusa, Lam., a native of the Old World, ranging from Austro- 

 Hungary to Asia Minor. How did these plants reach here ? — R. L. 

 Mann, Walpole, Massachusetts. 



Two new Stations for Arceuthobium. — On October 18 of this 

 year, while passing through a spruce swamp in the northeastern part 

 of Wilmington, Massachusetts. 1 noticed several spruces covered with 

 'witches' brooms.' I at once thought of Arceuthobium pusiHum, Peck, 

 and an examination of some of the trees disclosed abundant plants 

 of this interesting parasite. One week later (October 25) on 

 spruces around a little pond in the southeastern part of Andover, 

 about four miles from the Wilmington locality, I found other spruces 

 with ' witches brooms ' and Arceuthobium. Except for the station 

 reported by Mr. Jack in Rhodora, ii. 6, and now, as I understand, 

 destroyed by the new Metropolitan Reservoir, this species seems not 

 to have been hitherto reported from Massachusetts. — Arthur 

 Stanley Pkase, Andover, Massachusetts. 



Newly Introduced Species of Crepis and Leontodon. — 

 As compared with the wide distribution and large number of species 

 of Crepis and Leontodon growing throughout Europe but few species 

 are reported to have found their way to North America. Eour spe- 

 cies of Crepis and three of Leontodon comprise the list and of the 

 seven L. autumna/is, L. is the only one at all common. In June last 

 the following species of these genera were found growing at South- 

 ington, Connecticut, in a small plot of grass land of not over an acre 

 in extent. It is natural to suppose that these plants were introduced 



