[Vol. 10 



76 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



and Mo. Bot. Gard. Herb.) ; vicinity of Choapa, and vicinity of 

 Illapcl, October 6. 1914, Mr. & Mrs. J. N. Rose 19193, 19362, 

 19237 (U. S. Nat. Herb.) ; San Felipe, September 25, 1919, Hoi- 

 way & Hoi way 67 (Gray Herb.). 



Senecio alternifolius Greenm., comb. nov. 



Gynoxis alternijolia Schz. Bip. in Bull. Soc. Bot. Fr. 12:80. 

 1865, name only; in Linnaea 34:531. 180(5, name only; Rusby in 

 Mem. Torr. Bot. Club 6:07. 1896, description. 



Bolivia: vicinity of Sorata, alt. 3000-3200 m., May, 1859, 

 Mandon 131 (Gray Herb.); vicinity of Mapiri, alt. 2435 m., 

 September, 1892, Bang 1574 (Mo. Bot. Gard. Herb.); Unduavi, 

 September, 1894, Bang 2477 (Mo. Bot. Gard. Herb, and Gray 

 Herb.), distributed as "Eupatorium trichotomum Sch. Bip/'; 

 Unduavi, Noryungas, alt. 3300 m., November, 1010, Buchtien 

 3078 (N. Y. Bot. Gard. Herb.). 



The two morphological characters, namely, opposite leaves 

 and conical tipped style-branches, ordinarily relied upon to dis- 

 tinguish Gynoxis from Senecio, are at best very unsatisfactory. 

 The latter character does not hold, since the same type of style- 

 branch occurs in a number of species which are accepted unqual- 

 ifiedly as true Senecios. The one character separating these two 

 genera is the leaf arrangement. In only one case, among the 

 several collections cited above, namely, Bang's No. 1574, do the 

 leaves approach an opposite position on the stem, and even here 

 they arc only subopposite. In all other regards the species in 

 question is a typical Senecio, hence it is transferred to that genus. 



Senecio andicola Turcz. Bull. Soc. Nat. Mosc. 24 2 :91. 1851. 



S. vernicosus Schz. Bip. var. major Wedd. Chlor. And. 1:94. 



1855-1857. 



S. ledifolius Schz. Bip. ace. to Wedd. I. c. 



Colombia: moist open places, Paramo de Ruiz, Department 

 of Tolima, alt. 3100-3700 m., December 16-17, 1917, Pennell 

 3076 (N. Y. Bot. Gard. Herb., U. S. Nat. Herb., and Mo. Bot. 

 Gard. Herb.). 



A study of additional material may show that this species 

 should be merged with S. ledifolius (HBK.) DC, but at present 

 it seems desirable to regard it as specifically distinct, on account 

 of the larger leaves and broader calyculate bracteoles of the in- 

 volucre. 



Senecio apiculahis Schz. Bip. ex Wedd. Chlor. And. 1:128. 

 1855-57. 



