194 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
As this form contradicts one of the chief characters of Oxypolis, it may represent a 
different generic type, but its very close resemblance to 0. jiliformis in dther regards, 
and its extremely local occurrence constrain us to regard it rather asa well-established 
local variety. 
2. Oxypolis ternata (Nutt.) Heller, Cat. No Am. PLo5. 1898. 
Peucedanwm ternatum Nutt. Gen. 1: 182. 1818. 
Archemora ternata Nutt. in Torr. & Gray, Fl. 1: 631. 1840, 
Neurophyllum longifolium Torr. & Gray, Fl. 1: 618. 1840. 
Tiedemannia ternata C. & R. Bot. Gaz. 12: 74. 1887. 
Stem slender, 6 to 9 dm. high; leaves few, with very long petioles, 
ternately divided into 
more or less elongated 
entire linear or filiform 
leaflets, or sometimes 
reduced to two leaflets 
oreven one: umbel 6 to 
W-raved, with involucre 
of few small bracts, and 
involucels of several se- 
taceous bractlets: rays 
2.5 to fem. long; pedi- 
F1G. 58.—Oxypolis rigidior: a, <8: b, < 12. cels 6 to 10 mm. long; 
fruit ovate to obovate, 4 
mm. long; oil tubes smaller than in O. #7/form/s, 4 on the commissural 
side, 
Type locality, ** on the bushy margins of swamps, in the pine forests 
of North and South Carolina.” 
Pine barren swamps, from North Carolina to Florida. 
Specimens examined : 
Fiortpa: Low pine barrens, Apalachicola, Chapman, same station, Curtiss 1010, 
November, 1880. 
3. Oxypolis rigidior (Iu.) Raf. in Seringe, Bull. Bot. 218. 1830. 
Fic. 58, 
Srom rigidius L. Sp. Plo 1: 251. 1753. 
Archemora rigida DC. Prodr. 4: 188. 1880, 
Peucedanum rigidum Wood, Bot. & Flor. 136. 1870. 
Tiedemannia rigida C. & R. Bot. Gaz. 12: 74. ISS7. 
Stem 6 to 15 dm. high; leaves pinnate, 3 to 9-foliolate: leaflets from 
ovate or lanceolate-oblone to linear-lanceolate, entire or remotely 
toothed; umbel 15 to 25-rayed, with involucre or few small bracts, and 
involucels of several setaceous bractlets; rays 3 to 10 em. long; pedicels 
6 to 18 mm. long; fruit oblong, 5 to 7mm. long; oil tubes 4 to 6 on 
the commissural side. 
Type locality, “ Virginia; collected by Clayton, 
Swamps from New York to Florida, and west to Minnesota and 
Louisiana. 
