TORREYA 



November, igio 

 Vol. 10 ' No. II 



NORTHWARD EXTENSION OF THE RANGE OF A 

 RECENTLY DESCRIBED GENUS OF 



LlbKAkV 

 NEW YORK 

 UMBELLIFERAE BOTANICAL 



By Roland M. Harpkr GARDEN. 



One day in the fall of 1907 I was talking with Dr. Forrest 

 Shreve about the peculiar distribution of certain coastal plain 

 plants, and reference was made to Oxypolis filiformis (Walt.) 

 Britton,* which ranges from North Carolina to Florida and Mis- 

 sissippi in the pine-barrens, with an outlying variety (Canbyi 

 C. & R., Contr. U. S. Nat. Herb. 7: 193. 1900) in southern 

 Delaware. Dr. Shreve then remarked that he had found this 

 species the year before on the Potomac River near Hancock, 

 Maryland; but I assured him that the occurrence of such a 

 pine-barren plant among the mountains so far north was highly 

 improbable, t and that his specimens were more likely Harperella 

 nodosa Rose, a plant of very similar appearance, but easily dis- 

 tinguished by its involucres, fruit, time of flowering, and various 

 other characters. This it is true was then known only from two 

 counties in the coastal plain of Georgia and two in the coal 

 region of Alabama, J but the Alabama localities were along 

 streams in the Cumberland Plateau, which is a direct continuation 

 of the mountains of western Maryland, and a great many species 

 of plants are common to the mountains of these two states. 



Not wishing to leave this interesting matter unsettled, I asked 



*Formerly referred to the genera Oenanthe, Slum, Tiedemannia, and Peucedanum, 

 in most cases with the specific name teretifolia (urn). 



tSee Bull. Torrey Club 36: 584 (first paragraph). 1909. 



JSee Torreya 6: 112-114. 1906. The genus (originally described in Proc. 

 U. S. Nat. Mus. 29: 441. 1905) was then known as Harperia, but this was found 

 to be a homonym, and Dr. Rose soon changed it to Harperella (Proc. Biol. Soc. 

 Wash. 19: 96. 1906). 



[No. 10, Vol. 10, of Torreya, comprising pages 217-236, was issued October 

 27, 1910.] 



237 



