WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 743 



Leaves thick and rather fleshy, not 

 yellowish. (See continuation.) 

 (Continuation.) 

 Plants comparatively stout, mostly more than 30 cm. high; 



heads 1 cm. broad 34. S. neomexicanus. 



Plants slender, lower; heads less than 1 cm. broad. 

 Basal leaves obovate or broadly oblanceolate. 



Bracts 5 to 6 mm. lugh; plants conspicuously tomen- 



tose •- 35 . S. peniodontus. 



Bracts 8 to 9 mm. liigh; plants almost entirely glabrous. 36. S. cymbalarioides. 

 Basal leaves naiTOwly oblanceolate or oblong. 



Upper cauline leaves pinnatifid or sharply serrate 37. S. mutabilis. 



Upper cauline leaves entire. 



Basal leaves with numerous coarse, usually sharp 



teeth 38. S. oblanceolatus. 



Basal leaves entire, or with a few obscure obtuse 

 teeth. 

 Stems tall, more than 30 cm., bearing numer- 

 ous mostly petiolate leaves 39. ^S. q/nthioides. 



Stems less than 20 cm. high, all the leaves 

 much reduced, sessile. 

 Leaves mostly entire, sometimes with 2 

 or 3 inconspicuous teeth; heads 9 

 mm. high or less; acheues glabrous. 40. S. metcalfei. 

 Leaves with several teeth at the apex; 

 heads about 12 mm. high; achenes 

 pubescent on the angles 41. S. remifolius. 



1. Senecio vulgaris L. Sp. PI. 867. 1753. Common groundsel. 

 Type locality: European. 



New Mexico: Santa Fe. 



Introduced from Europe; a weed in gardens. 



2. Senecio pudicus Greene, Pittonia 4: 118. 1900. 



Senecio cei-nuus A. Gray, Amer. Joum. Sci. 33: 239. 1862, not L. f. 1781. 



Type locality: Dry hillsides, and in the crevices of rocks, upper part of Clear 

 Creek, Colorado. 



Range: Mountains of Colorado and New Mexico. 



New Mexico: Fierro (Holzinger). Transition Zone. 



Our one specimen comes from a region so far removed from the ordinary range of 

 the species that one would scarcely expect it to be the same. It differs fi'om the 

 form common in Colorado only in having slightly smaller heads. The plant is not 

 known from any of the intervening mountain ranges of New Mexico, this locality 

 being in the southwestern part of the State. 



3. Senecio sacramentanus Woot. & Standi. Contr. U. S. Nat. Herb. 16: 194. 1913. 

 Type locality: Vicinity of Cloudcroft, near .the summit of the Sacramento Moun- 

 tains, New Mexico. Type collected by Wooton, August 15, 1901. 



Range: Sacramento Mountains of New Mexico, in the Transition Zone. 



4. Senecio scopulinus Greene, Pittonia 4: 117. 1900. 



Senecio bigelovii hallii A. Gray, Proc. Acad. Phila. 1863: 67. 1864. 

 Type locality: "Common in the mountains of middle and southern Colorado." 

 Range: Wyoming to New Mexico. 



New Mexico: Baldy; Costilla Valley; Chama; Middle Fork of the Gila. Moun- 

 tains, in the Transition Zone. 



