FLOWERING PLANTS AND FERNS OF ARIZONA 335 



Mountains), P. confinis (type Tourney 47b, Bradshaw Mountains), 

 and P. mohavensis Greene (type Jones in 1884, Hackberry). The 

 writers have not found satisfactory characters for distinguishing 

 these forms, even as varieties. 



2. ESCHSCHOLTZIA. California-poppy 



Plants annual; leaves ternately dissected, smooth, glaucous; 

 flowers solitary on long peduncles, or in small loose clusters at the ends 

 of the branches; petals orange or yellow; receptacle concave around 

 the base of the pistil, often with a spreading outer rim and an erect 

 scarious inner rim; fruit a slender 1-celled, 2-valved, several-seeded, 

 longitudinally ribbed capsule. 



The juice of E. calif ornica Cham, is reported to be mildly narcotic 

 and to have been used by the Indians of California in alleviating 

 toothache. 



Key to the species] 



1. Outer rim of the hypanthium distinct, 0.5 to nearly 2 mm. wide, nearly as 

 wide as to wider than the scarious inner rim, after anthesis more or less 

 cartilaginous and flaring or revolute; stems leafy and branching above the 

 base or the plant nearly acaulescent; petals 15 to 30 mm. long; mature 



seeds dark-colored, rugose-reticulate 1. E. mexicana. 



1. Outer rim of the hypanthium indistinct or nearly obsolete, less than 0.5 mm. 

 wide, usually narrower than the inner rim, after anthesis not flaring (2). 

 2. Plant acaulescent or nearly so, very glaucous; leaf segments numerous 

 and crowded, very narrow, often almost filiform; petals 10 to 25 mm. 

 long; stamens usually more than 15; mature seeds at least partly cov- 

 ered with a thick, gray, deeply pitted, outer coat. 



2. E. glyptosperma. 

 2. Plants branching and leafy well above the base, slightly to rather pro- 

 nouncedly glaucous; leaf segments relatively few and not crowded; 

 petals less than 10 mm. long; stamens usually fewer than 15; mature 

 seeds dark-colored, with grayish reticulations, not deeply pitted. 



3. E. MINUTIFLORA. 



1. Eschscholtzia mexicana Greene, Calif. Acad. Sci. Bui. 1: 69. 1885. 

 Throughout the State, except the northeastern portion, 4,000 feet 



or lower, on plains and mesas, February to May. Western Texas to 

 southern Utah, Arizona, and Sonora. 



In favorable springs the landscape is colored over extensive areas 

 by the showy orange-colored (rarely white or pink) flowers. It is 

 reported that in southern Arizona the plants are grazed by cattle in 

 winter and early spring, when other feed is scarce. This species is 

 closely related to E. californica and apparently intergrades with it. 

 E. L. Greene (Pittonia 5: 260-262. 1905) published as species, based 

 on Arizona types, E. aliena, E. arizonica, E.jonesii, and E. paupercula. 

 The writers have been unable to find satisfactory characters by which 

 to separate these forms from E. mexicana. 



2. Eschscholtzia glyptosperma Greene, Calif. Acad. Sci. Bui. 1: 70. 



1885. 

 Mohave and Yuma Counties, 2,000 feet or lower, in sandy soil of 

 deserts, March to May. Southwestern Utah and western Arizona to 

 California. 



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