FLOWERING PLANTS AXD FERNS OF ARIZONA 973 



"Buckskin Mountains," Kaibab Plateau {Jones 6063). Known only 

 from northern Arizona. 



3. Laphamia palmeri A. Grav, Amer. Acad. Arts and Sci. Proc. 13: 



372. 1878. 



Monothrix palmeri Rydb., North Amer. El. 34: 21. 1914. 



Beaver Dam, Mohave County (Palmer, in 1877?, the type collec- 

 tion), about 2,000 feet, rocky canyons, July and probably later. 

 Southern Utah and northwestern Arizona. 



The var. tenella M. E. Jones, from crevices of sandstone rocks at 

 Springdale, Utah, distinguished by its loosely villous stems, may occur 

 in Arizona. 



4. Laphamia gilensis M. E. Jones, Zoe 2: 15. 1891. 



Leptopharynx gilensis Rydb., North Amer. Fl. 34: 24. 1914. 

 Laphamia arizonica Eastw., Calif. Acad. Sci. Proc. ser. 4, 20: 



159. 1931. 

 Laphamia dura A. Nels., Amer. Jour. Bot. 23: 266. 1936. 



Southern Gila, northeastern Pinal, and eastern Maricopa Counties, 

 about 2,500 feet, clefts in rocks in canyons, April to October, type 

 from Putnam Ranch (Jones in 1890), type of L. arizonica from Fish 

 Creek (Eastwood 8753), type of L. dura from Canyon Lake (A. Xelson 

 10323). Known only from south-central Arizona. 



5. Laphamia saxicola Eastw., Calif. Acad. Sci. Proc. ser. 4, 20: 159. 



1931. 

 Near Roosevelt Dam. Gila and Maricopa Counties, about 2.500 feet 

 (Eastwood 17401, the type coUection, Peebles 9420), the stems hanging 

 from crevices of cliffs, May and doubtless later. Known only from 

 south-central Arizona. 



6. Laphamia gracilis M. E. Jones, Calif. Acad. Sci. Proc. ser. 2,5: 703. 



1895. 



Perityle gracilis Rydb., North Amer. Fl. 34: 19. 1914, as to 

 synonym. 



Nagle Ranch, Kaibab Plateau, 7.000 feet (Jones 6050c. type), 

 September. Southern Nevada and northern Arizona. 



The type collection is a real Laphamia as here taken (Monothrix 

 of Rydberg), and the plant described under the name Perityle gracilis 

 by Rydberg is a coarse form of Perityle coronopifolia A. Gray. 



7. Laphamia dissecta Torr. in A. Gray, PI. Wright. 2: 81. 1853. 



Laphamia lemmoni A. Grav, Amer. Acad. Arts and Sci. Proc. 



16: 101. 1880. 

 Laphamia lemmoni var. pedata A. Grav, Svn. Fl. I 2 : 319. 



1884. 

 Perityle dissecta A. Gray, ibid. p. 320. 



Leptopharynx dissecta Rydb., North Amer. Fl. 34: 24. 1914. 

 Leptopharynx lemmoni Rydb., ibid. 



Mountains of Graham, Cochise, and Pima Counties, 3.000 to 4.600 

 feet, crevices of cliffs, May to October, types of L. lemmoni and L. 

 lemmoni var. pedata from near Camp Lowell, Pima County (Lemmon 

 in 1880). Southwestern Texas to southeastern Arizona. 



