[Vol. 10 



82 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



2900 m., September 26, 1911, C. H. T. Townsend A207 (Field 

 Mus. Nat. Hist. Herb.). 



Senecio formosus IIBK. Nov. Gen. & Sp. 4:177. 1820; DC. 



Prodr. 6:428. 1837; Wedd. Chlor. And. 1:125. 1855-57, excl. y- 

 subtruncatus. 



IS. Tabacon Turcz. in Bull. Soc. Nat. Mosc. 24 2 :91. 1851. 



Colombia: Moritz 1400 (Gray Herb.); Paramo de Buena Vis- 

 ta, Huila group, Central ( ordillera, State of Cauca, alt. 3000- 

 3000 m., January, 1906, Jahn 1117 (U. S. Nat. Herb.); moist 

 bushy valley, Paramo de Choachi, near Bogota, Department of 

 Cundinainarca, alt. 3000-3100 m., September 27, 1917, Pennell 



2237 (N. Y. Bot. Gard. Herb.) ; in swale, "Rosalito", near Paramo 

 de Ruiz, Department of Tolima, alt 2800-3100 m., December 



15-17, 1917, Pennell 2943 (N. Y. Bot. Gard. Herb, and Mo. Bot. 



Gard. Herb.) ; Laguna de Buitrago, alt. 3000 m., December, 1919, 



Bro. Ariste-Joseph A 503, A 504, A 505 (U. S. Nat. Herb.) ; 



Laguna Coche, May 3, 1870, Andre 3092 (N. Y. Bot. Gard. 



Herb.). 



Venezuela: Paramo de la Cristalina, State of Trujillo, alt. 

 2900 m., December 20, 1910, Jahn 13 (U. S. Nat. Herb.). 



When Senecio formosus HBK. was published originally it was 

 doubtfully attributed to "Nova Hispania," or Mexico. Weddell 

 pointed out that the species is a South American one, and that 

 its erroneous assignment to Mexico was probably due to a con- 

 fusion of labels accompanying the original material. Weddell's 

 treatment of the species, however, would indicate that he re- 

 garded it as a polymorphic species, since he included S. Tabacon 

 Turcz. as a synonym and then characterized three varieties, 

 namely, an gustij olius , latijolius, and subruncinatus . To the writer 

 the last-named variety seems to merit specific rank and is so 

 treated in this paper. The specimens here cited as representing 

 S. formosus show considerable variation in leaf-outline and in 

 the degree of pubescence on the achenes. In Pennell's No. 2943 



the achenes are but slightly hirtellous, while in all the others 

 the hirtellous character is very distinct. The species is well 

 marked by the gland ular-villous hairs on stem, leaves, and in- 

 volucre, and by the purple rays and numerous disk-flowers. 



Senecio genuflexus Greenm., sp. nov. 



Frutex scandens; caulibus vel ramis gracilibus glabris plus 

 minusve flexuosis vel geniculars; foliis alternis petiolatis oblon- 

 go-lanceolatis vel ovato-lanceolatis 2.5-6 cm. longis 1-2.5 cm. 

 latis acutis vel acuminatis submucronatisque integris vel subin- 



