282 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Basal leaves, as well as the whole plant, grayish. (Plants 

 taller). 



Pods widely spreading; plants very stout 7. C. aspera. 



Pods erect or ascending; plants slender. 



Claws of the petals one-half longer than the sepals. 5. C. elata. 

 Claws of the petals little or not at all longer than 



the sepals 4. C. asperrima. 



1. Cheirinia bakeri (Greene) Rydb. Bull. Torrey Club 39: 324. 1912. 

 Cheiranthus aridus Greene, Pittonia 4: 198. 1900, not A. Nels. 1899. 

 Cheiranthus bakeri Greene, Pittonia 4: 235. 1900. 



Erysimum bakeri Rydb. Bull. Torrey Club 33: 141. 1906. 



Type locality: Dry hills among nut pines and cedars at Aztec. New Mexico. 

 Type collected by Baker (no. 350). 



Range: Southwestern Colorado to western New Mexico and adjacent Utah and 

 Arizona. 



New Mexico: Aztec; Carrizo Mountains; Florida Mountains; mountains west of 

 San Antonio. Dry hills, in the Upper Sonoran Zone. 



A low (20 to 40 cm.) plant with sinuate-dentate leaves, occuring in the northwestern 

 part of the State. The type of Cheiranthus aridus was collected at Aztec by Baker. 



2. Cheirinia desertorum Woot. & Standi. Contr. U. S. Nat. Herb. 16: 125. 1913. 

 Type locality: Near Hachita, New Mexico. Type collected by Woo ton, June 16, 



1906. 

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



3. Cheirinia inconspicua (S. Wats.) Rydb. Bull. Torrey Club 39: 323. 1912. 

 Erysimum parviflorum Nutt.; Torr. & Gray, Fl. N. Amer. 1: 95. 1838, not Pers. 



1807. 

 Erysimuvi asperum inconspicuum S. Wats, in King, Geol. Expl. 40th Par. 5: 24. 1871. 

 Type locality: Diamond Valley, Nevada. 

 Range: New Mexico and Kansas and northward. 



New Mexico: Dulce; White Mountains; Cloudcroft. Upper Sonoran and Transi- 

 tion zones. 



4. Cheirinia asperrima (Greene) Rydb. Bull. Torrey Club 39: 324. 1912. 

 Cheiranthus asperrimus Greene, Pittonia 3: 133. 1896. 



Erysimum asperrimum Rydb. Bull. Torrey Club 33: 141. 1906. 



Type locality: None given, but plains of Wyoming indicated. 



Range: South Dakota to Arizona and New Mexico. 



New Mexico: Santa Fe; Las Vegas; Raton; Farmington; Ramah; Nara Visa; 

 Sandia Mountains; Magdalena Mountains; Mogollon Mountains; Black Range; Organ 

 Mountains; White and Sacramento mountains; Capitan Mountains. Hills, in the 

 Upper Sonoran and Transition zones. 



This and the next are the common plants of the middle elevations in the mountains 

 of the State. It is the plant which has ordinarily passed as Erysimum asperum, 

 but it is much slenderer than that species, the leaves are mostly entire, and the pods 

 are usually less stout and are erect or ascending, never strongly divaricate. 



5. Cheirinia elata (Nutt.) Rydb. Bull. Torrey Club 39: 323. 1912. 

 Erysimum elatum Nutt.; Torr. & Gray, Fl. N. Amer. 1: 95. 1838. 

 Cheiranthus elatus Greene, Pittonia 3: 135. 1896. 



Type locality: "Grassy situations by the banks of the Wahlamet." 

 Range: North Dakota, Montana, and Washington, southward to the the mountains 

 of Colorado and New Mexico, westward to California. 



New Mexico: Santa Fe and Las Vegas mountains; Sandia Mountains; Organ Moun- 

 tains; Jarilla Mountains; White Mountains. On hills, in the Transition Zone. 



