THE PLANT WORLD. 133 



Poverty weed, for Solidago Janceolata L. , probably because of 

 its frequent presence in poor or neglected ground. 



Nose-bleed, for Trillium erectum L. ; doubtless suggested by 

 the red fruit. Similarly in New York State, 1 am told by Mr. \V. N. 

 Clute, the plant goes by the name of Bloody -noses. 



Pi-UNKUM, for Ibjdroeotyle umhellata L, This is said to have 

 been the Indian name for the Squaw- weed [Senecio sp.,) and its applica- 

 tion to llijdrocoiyle may be a case of transference because of some simi- 

 larity of leaf. 



Dogberry, for Yiburunum lantaiioides Mich. 



Camp-root, for Gexun strictum Ait. 



Simons' Weed, for Galeojms Tetrahit L. An interesting instance 

 of a common plant name adopted from the name of a person associated 

 with the plant's appearance in a neighborhood. This plant, in the 

 locality where the name above recorded is now in use, was first noticed 

 on the land of a person named Simons. As it spread, it became some- 

 thing of a nuisance, so a name became a necessary, and Simons' Weed 

 it naturally became. Similarly, I have heard that Chrysanthemnm 

 Leucanthenum 1j., the common ox-eye-daisy, was once locally known 

 in southeastern Pennsylvania and Delaware as Richardson's Pink, from 

 one Richardson, who brought the seed from Europe under the delusion 

 that the plant would improve the pastures. 



Philadelphia, 



THE TWIN-FLOWER (LINNAEA BOREALIS) IN 



PENNSYLVANIA. 



By Thos. C. Porter. 



ON this beautiful little trailing plant with its erect peduncles bear- 

 ing at their summits a few dainty, nodding, bell-shaped flowers, 

 Gronovius founded a genus, in honor of the illustrious father 

 of modern natural history. And the memorial is a fitting one, because, 

 unique in its order, it is represented by a single species, and that an 

 inhal)itant of the high north, where Linnaeus himself, no doubt, 

 gathered it during one or more of his journeys through Dalecarlia and 

 the hyperborean country of the Lapps. 



Not confined to Europe, it is spread also over the northern part of 

 our own continent, from the Atlantic to the Rockies, and in the east 



