FLOWERING PLANTS AND FERNS OF ARIZONA 505 



6. Phaseolus metcalfei Woot. and Standi., Contrib. U. S. Natl. 



Herbarium 16: 140. 1913. 



Phaseolus returns Benth., PI. Hartw. 11. 1839. Not of 

 Moench, 1794. 



East Fork of the White River (Navajo? County) , Pine (Gila County) , 

 Huachuea Mountains (Cochise County), July and August. South- 

 western New Mexico and Arizona. 



Perhaps only a variety of P. ritensis. 



7. Phaseolus wrightii A. Gray, PL Wright, 1: 43. 1852. 



Apache County to Coconino County, south to Cochise and Pima 

 Counties, 1,000 to 8.000 feet, common on rocky slopes, flowering 

 almost throughout the year. Western Texas to Arizona and Mexico. 



The Arizona- form is var. grayanus (Woot. and Standi.) Kearney 

 and Peebles (P. grayanus Woot. and Standi.), with usually larger 

 leaflets, longer peduncles, and more persistently pubescent pods than 

 in typical P. wrightii, but intergrading with the latter. 



8. Phaseolus angustissimus A. Gray, PI. Wright, 2: 33. 1853. 

 Apache County to Coconino County, south to Cochise and Pima 



Counties, 3,500 to 7.000 feet, common on mesas, mostly among trees 

 and shrubs, June to September. Xew Mexico and Arizona. 



The typical form has linear-lanceolate leaflets, these entire or merely 

 angulate at base. More common in Arizona is var. latus M. E. Jones 

 (P. dilatatus Woot. and Standi.) with oblong-lanceolate leaflets, these 

 subhastately lobed at base. The type of var. latus, which intergrades 

 completely with the typical form, was collected along the Little 

 Colorado River near Winslow. Navajo County {Jones in 1890). 



55. GERAXIACEAE. Geranium family 



Plants herbaceous; leaves opposite, with stipules; flowers perfect, 

 regular, in eymose or umbellike clusters; sepals and petals 5, the sepals 

 persistent, the petals whitish to rose purple, deciduous; stamens 10, 

 all or only 5 of them fertile, the filaments separate or united toward 

 the base; pistil compound, the 5 carpels at first united to the central 

 column, separating at maturity, long-beaked by the persistent styles. 



Key to the genera 



1. Carpels with thick, not spindle-shaped bodies, the tails (persistent styles) not 

 bearded within, becoming recoiled, thus bringing the carpels toward the 

 apex of the column, but not spirally twisted: stamens 10, all anther-bearing. 



1. Geranium. 



1. Carpels with slender, spindle-shaped bodies sharp-pointed at base, the tails 



bearded within, becoming spirally twisted, not bringing the carpels upward; 



anther-bearing stamens 5, the alternate filaments scalelike or obsolete. 



2. Erodium. 

 1. GERANIUM. Craxesbill 



Leaves palmately lobed or parted; stamens all fertile, 5 of the fila- 

 ments usually longer than the others; styles persistent, becoming re- 

 coiled in fruit. 



The plants are reported to afford fairly good forage for sheep. The 

 rootstock of G. maculatum L. of the eastern United States is used 



