FLOWERING PLANTS AND FERNS OF ARIZONA 437 



Occurs usually at lower altitudes and in deeper sand than L 

 sparsiflorus, the two forms seldom commingling' and, when they do, 

 rarely intergrading, in Arizona at any rate. Watson's description of 

 L. condnnus var. arizonicus seems clearly applicable to the form pub- 

 lished subsequently as L. sparsiflorus var. barbatulus Thornber, but 

 Watson's description of L. arizonicus as a species (with citation of 

 L. concinnus var. arizonicus S. Wats, as a synonym), seems to include 

 both L. sparsiflorus and the form here under consideration. 



4. Lupinus concinnus Agardh, Syn. Gen. Lupin. 6: pi. 1. 1835. 

 Mohave County to Graham, Gila, Cochise, Santa Cruz, Pima, and 



(doubtless) Yuma Counties, 5,000 feet or ( usually; lower. March 

 to May. Xew Mexico to southern Nevada. Arizona, California, and 

 northern Mexico. 



Very abundant in the sandy desert areas, in spring. The commoner 

 Arizona form is the relatively small-flowered var. orcuttii (S. Wats.) 

 C. P. Smith (L. orcuttii S. Wats., L. micensis M. E. Jones), but 

 Smith has identified numerous Arizona specimens as of the typical 

 form of the species (see footnote 66, p. 434, Smith, p. 122). 



5. Lupinus brevicaulis S. Wats, in King, Geol. Expl. 40th Par. 5: 



53. 1871. 



Lupinus dispersus Heller, Muhlenbergia 5: 141. 1909. 



Apache County to Mohave County, south to Cochise, Santa Cruz, 

 and Pima Counties, 3.000 to 7,000 feet, dry slopes and mesas, April to 

 July. Colorado to Oregon, Xew Mexico, Arizona, and California. 



6. Lupinus kingii S. Wats., Amer. Acad. Arts and Sci. Proc. 8: 534. 



1873. 



Lupinus capitatus Greene, Pittonia 1: 171. 1888. 



Apache. Xavajo, Coconino, and Yavapai Counties, 6,000 to 8.000 

 feet, usually in open pine forests, June to August. Utah, Colorado, 

 Xew Mexico, and Arizona. 



7. Lupinus pusillus Pursh, Fl. Amer. Sept. 468. 1814. 



Apache County to northeastern Mohave County, 4,700 to 7,000 

 feet, sandy plains, May and June. Saskatchewan to Washington, 

 south to Kansas, Xew Mexico, and northern Arizona. 



The Arizona specimens belong mostly to the relatively small- 

 flowered var. intermontanus (Heller) C. P. Smith (L. intermontanus 

 Heller), which intergrades completely with the typical form. 



8. Lupinus rubens Pydb., Torrey Bot. Club Bui. 34: 45. 1907. 

 X"avajo County to Mohave County, 2,000 to 5,000 feet, April to 



June. Southern Utah and northern Arizona to southeastern California. 

 Probably not more than a variety of L. pusillus. Some of the few 

 Arizona specimens referred to L. rubens are nearly intermediate. 



3. Lupinus odoratus Heller, Muhlenbergia 2: 71. 1905. 



Near Peach Springs, Hackberry, Kingman, and Chloride (Mohave 

 County), 3.000 to 4,500 feet, April and May. Western Arizona, 

 Xevada, and southeastern California. 



The Arizona specimens are not typical and probably belong to var. 

 pilosellus C. P. Smith. The handsome flowers are fragrant. 



