MEXICAN AND CENTRAL AMERICAN UMBELLIFER^ 1 27 



Neogoezia planipetala Hemsl. Kew Bull. 1894: 335. 1894. 



Tepic : summit of Sierra Madre near Santa Teresa, Rose 2107, 

 3745' August 8-13, 1897. 



Durango : in tlie high mountains, Rose, August 16, 1897. 



Zacatecas: in the high mountains, Rose, August iS, 1897. 



These specimens have been referred by Mr. Hemsley to JV. plani- 

 petala, a species collected but once and then not in fruit. The plants 

 collected by Dr. Rose differ strikingly from JV. planipetala in size 

 and shape of the bracts as described and figured. They represent a 

 species common on both ranges of the Sierra Madre in the states 

 cited above, at an elevation of 1500-2400 meters, and on the slopes 

 and summits of the mountains. The flowering scapes are about 5 dm. 

 high ; leaves 10 to 20 cm. long, with somewhat bipinnatifid segments ; 

 involucral bracts 12 to 20 mm. long, 3 to 7-toothed or laciniate near 

 the tip (perhaps sometimes entire) ; pedicels slender, 8 to 12 mm. 

 long; flowers white, with prominent sepals; fruit 4 mm. long. 



The type locality of JV. planipetala is given as ' Bolanos,' in Ja- 

 lisco. Of course Hartweg did not get it exactly at Bolanos, as this 

 village is in a hot tropical valley, at an altitude of but 840 meters. It 

 may have come from the mountains to the west, although Dr. Rose 

 found no specimens of this genus in these mountains, his specimens 

 coming from mountains one hundred miles to the north. 



12. APIASTRUM Nuttall in Torr. & Gr. FI. i : 643. 1840. 



A North American genus of two species, the following being found 

 in Lower California and its neighboring islands. 



Apiastrum angustifolium Nutt. 1. c. 



Cedros Island: Pal?}ier 679, in 1889; Anthony 310, in 1897. 

 Lower California: San Qiiintin, Pahner 6/i^2)i '^^ 1889. 



13. NEONELSONIA C. & R. Contr. Nat. Herb. 3: 306. 1895. 



A genus of two species, the type species being Guatemalan; the 

 other, heretofore referred to Arracacia, as seen below, is South 

 American. The genus, therefore, stands as follows : 



I. Neonelsonia acuminata (Benth.) in Engler & Prantl, Nat. Pflanz- 

 fam. 3^: 167. 1898. 



Arracacia aciiminata Benth. PI. Hartw. 187. 1845. 

 South America : Qiiitensian Andes near Pichincha, altitude 3600- 



3780 meters, J. P. Couthony,\r\ 1855 (in herb. Gray); New 



Granada, Purdie (in Ball collection). 



Proc. Wash. Acad. Sci., December, 1899. 



