FLOWERING PLANTS AND FERNS OF ARIZONA 461 



27. Dalea pogonathera A. Gray, Amer. Acad. Arts and Sci. Mem. 



ser. 2, 4: 31. 1849. 



Parosela pogonathera Vail, N. Y. Acad. Sci. Trans. 14: 34. 1894. 



Cochise, Santa Cruz, and Pima Counties, 2,300 to 6,000 feet, grass- 

 land and hills, March to September. Texas to southern Arizona and 

 Mexico. 



28. Dalea lumholtzii Robins, and Fern., Amer. Acad. Arts and Sci. 



Proc. 30: 115. 1894. 



Parosela arizonica Vail, Torrey Bot. Club Bui. 24: 14. 1897. 

 Parosela lumholtzii Vail, ibid. 26: 117. 1899. 



Santa Catalina and Baboquivari Mountains (Pima County), 

 Pajarito Mountains (Santa Cruz County), 3,600 to 7,000 feet, Septem- 

 ber and October. Southern Arizona and Sonora. 



The foliage has fragrance similar to that of lemon verbena (Lippia 

 triphylla). 



29. Dalea formosa Torr., Ann. Lye. N. Y. 2: 177. 1828. 



Parosela formosa Vail, Torrey Bot, Club Bui. 24: 16. 1897. 



Navajo and Yavapai Counties to Cochise and Pima Counties, 

 2,000 to 6,500 feet, hills and mountains, March to June (September). 

 Colorado and New Mexico to Arizona and northern Mexico. 



30. Dalea greggii A. Gray, Amer. Acad. Arts and Sci. Mem. ser. 2, 



5: 314. 1855. 



Parosela greggii Heller, Cat. North Amer. PL ed. 2, 6. 1900. 



Pima and Santa Cruz Counties, rocky hills, 3,000 to 5,000 feet, 

 February to May. Southern Arizona and Mexico. 



A handsome plant with straight, more or less woody stems and 

 globose heads of rose-purple flowers. 



31. Dalea wislizeni A. Gray, Amer. Acad. Arts and Sci. Mem. ser. 2, 



4: 32. 1849. 



Parosela wislizeni Vail, N. Y. Acad. Sci. Trans. 14: 34. 1894. 



Greenlee, Cochise, Santa Cruz, and Pima Counties, 3,000 to 5,000 

 feet, rocky hills, April to October. New Mexico, southeastern 

 Arizona, and Mexico. 



Spikes at the ends of the elongate branches, and leaves and twigs 

 more or. less villous, characterize the typical form. In var. sanctae- 

 crucis (Rydb.) Kearney and Peebles (Parosela sanctae-crucis Rydb.), 

 growing in Santa Cruz County and in the Baboquivari Mountains 

 (Pima County), the spikes also are mainly at the ends of elongate 

 branches but the leaves and twigs are glabrous or sparsely pubescent. 

 The var. sessilis Gray, with spikes mainly at the ends of short lateral 

 branches, occurs in Greenlee, Cochise, Pima, and Santa Cruz Counties. 



32. Dalea pringlei A. Gray, Amer. Acad. Arts and Sci. Proc. 17: 201. 



1882. 



Parosela pringlei Heller, Cat, North Amer. PL ed. 2, 6. 1900. 

 Thornbera pringlei Rydb., North Amer. Fl. 24: 119. 1920. 



Pima- County, 2,500 to 5,000 feet, hills and mountains, April to 

 October, type from the Santa Catalina Mountains {Pringle in 1881). 

 Southern Arizona, Sonora, and Chihuahua. 



