51 



near Denver, (\)l()ra(l(), in 1914. It is of more than usual in- 

 terest, because the type of Gcntiana iCcnliana liUea L.) has 

 yellow flowers, and tlie same is true of the Asiatic 6'. oihophora 

 French, and of certain species of Cenlaureum. The yellow is 

 evidently due to a soluble flavone. I examined a fragment of 

 one of the petals under the microscope and it gave the char- 

 acteristic light yellow reaction with potassium hydroxide. The 

 variety or form of E. russellianum with white flowers (/, alhi- 

 florum) has long been known. The Denver plant belongs to the 

 segregate called E. andrewsii A. Nels., but it seems to be the 

 same as E. russellianum, as Rydberg indicates, although he 

 wrongly credits the latter name to Linnaeus. 



T. D. A. Cockerel^. 



Myrica Carolinensis, Ne;\v to Chester Couxty, 

 Pennsylvania 



While studying the flora of a portion of Chester County, 

 Pennsylvania, in an ecological investigation reported elsewhere, 

 the writer discovered a fine specimen of bay berry {Myrica 

 carolinensis Mill) growing on the South Valley Hill near Paoli. 

 The plant is staminate, almost two meters in height, and of 

 healthy growth. No other bush of the same kind is near. The 

 plant is growing at the edge of woods on the cleared brow of a 

 shoulder of the hill, somewhat protected from the full sweep 

 of winds by part of the shoulder. The soil is dry and sterile 

 (Manor stony loam) of mediacid reaction (pH 6.2 to 6.4). 



Myrica is not recorded by Darlington* in Flora Cestrica; 

 Porterf records the species M. carolinensis from the adjoining 

 county of Lancaster. 



A branch from the plant has been placed in the herbarium of 

 the Academy of Natural Sciences in Philadelphia. 



Arthur P. Kelley. 



* Darlington, W., 1837, Flora Cestrica. 



t Porter, T. C, 1903, Flora of Pennsylvania. 



