142 COULTER AND ROSE 



Orizaba : Bourgeau 2837, in 1865-66 ; Seaton 97 (type), July 30, 

 1 891 ; also according to Mr. Hemsley in litt. from Orizaba {^Bat- 

 ter i 869). 



Chiapas: from pine forests of Pueblo Nueva, Litiden 586. From 

 its range it should be A. chiapensis. 



This is Arracacia aczanifzata Hemsley Biol. Cent. -Am. I : 564 as 

 to Mexican plant, not of Bentham, which is a JVeonelsotiia. 



14. Arracacia luxeana C. & R., Bot. Gaz. 18 : 55. 1893. 

 Type in Nat. Herb. 



15. Arracacia longipedunculata C. & R., sp. nov. Plate X. 



Stems 6 to 9 dm. high, somewhat branching, glabrous ; radical and 

 lower stem leaves long petioled (20 cm. long), 2 to 3 times ternate ; 

 leaflets ovate, acute, coarsely toothed and apiculate, 5 to 6.2 cm. long, 

 the central one cuneate at base, the lateral ones mostly rounded; upper 

 stem leaves much smaller, opposite, once ternate and leaflets linear ; 

 inflorescence a single terminal umbel ; peduncle 5 to 7.5 cm. long ; in- 

 volucre none ; involucel of i to 3 filiform bractlets ; rays spreading, 

 5 cm. or less long, somewhat unequal ; pedicels 4 to 6 mm. long ; 

 fruit oblong, 5 mm. long, rounded at base, slightly beaked at apex ; 

 stylopodium low conical ; ribs filiform ; oil-tubes 3 in the intervals. 



Morelos : in canyons above Cuernavaca, Pringle 6333, June 19, 

 1896. 



16. Arracacia montana C. & R., sp. nov. 



Stems 6 to 10 dm. high, glabrous throughout; leaves large, 3 to 4 

 times ternate ; ultimate segments somewhat lanceolate, paler beneath 

 and slightly scabrous, serrate and apiculate; inflorescence large and 

 naked, with verticillate branches ; involuci-e and involucels wanting; 

 rays nearly equal, numerous, 20 to 25 mm. long; pedicels 2 to 3 mm. 

 long; fruit 6 mm. long; oil-tubes usually solitary in the intervals. 



Zacatecas : between Colotlan and Plateado, Rose 2S07, September 

 4, 1897; Sierra de los Morones, Rose ^^620^ September i, 1897. 



Jalisco: near Escabado, Rose 2624, August 26, 1897; on the road 

 between Mesquitec and Monte Escabado, Rose 3584, August 



1897- 



The specimens show considerable variation but apparently all be- 

 long to the same species. 



17. Arracacia moschata (H.B.K.) DC. Prod. 4: 244. 1830. 



Conium moschatum H.B.K. Nov. Gen. et Spec. 5: 14. pi. 420. 1821, 

 This species is a native of South America, and is the only one of 

 the genus not in our collection. 



18. Arracacia multifida Wats. Proc. Am. Acad. 26: 136. 1891. 

 Only known from collections of Mr. Pringle. Type in Herb. Gray. 



