WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 433 



Lobes of the leaves more numerous, 4 to many on each 

 side, the leaves never entire; plants not ceepi- 

 tose. 

 Plants stout, widely spreading; flowers of medium 



size for the genus, numerous 4 . N. mullifiora. 



Plants tall and slender, not spreading; flowers 



email for the genus, few 5. N. procera. 



Leaves sinuate-dentate, not pinna tifid. 



Flowers very large, petals about G cm. long; filaments not di- 

 lated 6. N. decapetala. 



Flowers small, petals 2 to 3 cm. long; outer filaments usually 

 dilated. 

 Cauline leaves all sessile, not ciineate at the base. 



Petals 2 cm. long; flowers crowded at the top of the 

 stem; leaves large, 5 to 10 cm. long, long-acumi- 

 nate 7. N. rusbyi. 



Petals about 3 cm. long; flowers mostly solitary; cauline 



leaves short and small, acute 8. N. strictissima 



Caidine leaves, at least the lower ones, cuneate at the base 

 or tapering into a petiole. 



Flowers bright yellow 9. N. spedosa. 



Flowers pale yellow. 



Involucral bracts narrow, entire 10. N. nuda. 



Involucral bracts laciniately lobed, one sepal oc- 

 casionally so 11. N. stricta. 



1. Nuttallia gypsea Woot. & Standi. Contr. U. S. Nat. Herb. 16: 149., 1913. 

 Type locality: On pure gypsum, near Lakewood, New Mexico. Type collected 



by Wooton, August 6, 1909. 

 Range: Southeastern New Mexico. 

 New Mexico: Near Lakewood; 35 miles south of Torrance; Roswell. Gypsum soil. 



2. NuttaUia laciniata (Rydb.) Woot. & Standi. Contr. U. S. Nat. Herb. 16: 150. 



1913. 



Touterea laciniata Rydb. Bull. Torrey Club 31: 565. 1904. 



Type locality: Pagosa Springs, Colorado. 



Range: Southwestern Colorado, western New Mexico, and probably Utah and Ari- 

 zona. 



New Mexico: Gallup; McCarthy Station; above Chamita; Zuni. Upper Sonoran 

 and Transition zones. 



3. NuttaUia perennis (Wooton) Cockerell, Trans. Amer. Ent. Soc. 32: 300. 1906. 

 Mentzelia perennis Wooton, Bull. Torrey Club 25: 260. 1898. 



Hesperaster perennis Cockerell, Torre ya 1: 143. 1901. 



Touterea perennis Rydb. Bull. Torrey Club 30: 277. 1903. 



Type locality: In gypseous soil at Round Mountain, half way between Tularosa 

 and the IMescalero Agency, White Mountains, New Mexico. Type collected by 

 Wooton (no. 184). 



Range: Known only from the type locality, in the Upper Sonoran Zone. 



4. NuttaUia multiflora (Nutt.) Greene, Leaflets 1: 210. 1906. 

 Bartonia multiflora Nutt. Joum. Acad. Phila. II. 1: 180. 1848. 

 Mentzelia multiflora A. Gray, Mem. Amer. Acad. n. ser. 4: 48. 1849. 

 Touterea multiflora Rydb. Bull. Torrey Club 30: 277. 1903. 



Type locality: Sandy hills along the borders of the Rio del Norte, Santa Fe, 

 New Mexico. Type collected by Gambel. 

 52576°— 15 28 



