MEXICAN AND CENTRAL AMERICAN UMBELLIFER^E I47 



foliage, narrowly oblong fruit which is 8 mm. long and with a more 

 evident minutely reticulate surface, sharper ribs, and more conical 

 stylopodium. 



Chihuahua: Sierra Madre, 6=^ miles east of Batopilas, altitude 2100 

 meters, Goldman iSo, October i and 2, 1898; near Batopilas, 

 altitude 1650-1950 meters, Goldman 209, October 4and 5, 1898. 



Ligusticum nelsoni C. & R., sp. no v. 



Rather stout, 6-1 3 dm. high, glabrous throughout ; leaves large, 

 biternate then pinnate ; the segments laciniately lobed, the lobes 

 sharply cut or entire; umbel of numerous rays, with no involucels 

 and mostly no involucre; fruiting rays about 5 cm. long; pedicels 

 unequal, 6 to 10 mm. long; flowers white; fruit oblong, 4 mm. long, 

 stylopodium low conical. 



Chihuahua : Sierra Madre, S. W. Chihuahua, Nelso7i 4S09, August 

 20, 1898; Mt. Mohinora, Nelson 4873, September i, 1898. 



Nearest L. porteri C. & R., but it differs from the type specimens 

 of that species chiefly in its much more sharply cut leaves, as well as 

 in its distinct range. 



29. COAXANA C. & R. Contr. Nat. Herb. 3: 297. 1895. 

 A monotypic mountain genus, collected by Nelson near the summit 

 of Mt. Zempoaltepec, in the state of Oaxaca, at an altitude of 3000 to 

 3300 meters. The single species is C. purpurea C. & R. 



30. CONIOSELINUM Fisch. in Hoff. Gen. Umb. 180. 1814. 



A genus of about seven species, chiefly found in Western Asia and 

 the United States. The following new species is the only Mexican 

 representative. 



Conioselinum mexicanum C. & R., sp. nov. 



Slender, 6 to 9 dm. high, somewhat leafy, glabrous except the pu- 

 berulent inflorescence ; leaves bipinnate ; ultimate segments ovate, lobed 

 or entire; umbel of 7 to 10 nearly equal rays, with no involucre, and 

 involucels wanting or of filiform bractlets ; rays in fruit 2.5 cm. long, 

 pedicels 6 mm. long; flowers white ; fruit nearly orbicular, 3 mm. 

 long, with prominent lateral wings. 



Chihuahua: Sierra Madre, 65 miles east of Batopilas, altitude 2100 

 meters, Goldman 191, October i and 2, 1898. 



31. ANGELICA L. Sp. PI. i: 250. 1753. 



A genus chiefly distributed in the cooler regions of the northern 



hemisphere, and rcpresentetl in ISIexico by four species. Hemsley 



enumerates four species, but one of them bearing a name (^A. mexi- 



cana Vatke) and proving to be a Prionosciadium. His three un- 



