FLOWERING PLANTS AND FERNS OF ARIZONA 453 



1. Glands absent on the twigs, petioles, and rachis; leaflets thin or thickish, often 

 with a slightly lustrous upper surface; calyx 'sparsely strigose or merely 

 ciliolate, the lobes deltoid, much less than half as long as the tube, the 

 upper ones obtuse; pods glabrous, asymmetrically oblanceolate in outline; 

 herbage soft-pilose to nearly glabrous 2. A. fruticosa. 



1. Amorpha californica Nutt. ex Torr. and Gray, Fl. North Amer. 1: 



306. 1838. 



Amorpha ovalis M. E. Jones, Contrib. West. Bot. 16: 32. 1930. 



Yavapai, Graham, Cochise, and Pima Counties, about 5,000 feet, 

 mostly along streams, apparently rare in Arizona, June, type of A. 

 ovalis from the Huachuca Mountains (Jones 25027). Arizona, Cali- 

 fornia, and Baja California. 



Plant sometimes known as stinking- willow and mock-locust. 



2. Amorpha fruticosa L., Sp. PL 713. 1753. 



Apache County to Coconino County, south to Cochise and Pima 

 Counties, 5,000 to 6,000 feet, rich soil in canyons and along streams, 

 fairly common, May to June. Ohio to Manitoba, south to Florida, 

 Arizona, California, and northern Mexico. 



The plants reach a height of 3 m. (10 feet). The Arizona form is 

 var. occidentalis (Abrams) Kearney and Peebles (A. occidentalis 

 Abrams), with more elongate spikes, these usually fewer on the 

 branches, than in most of the eastern specimens. E. J. Palmer, who 

 recognized A. occidentalis as a species, described under it two varieties, 

 a glabrate one with leaflets commonly truncate or retuse at apex 

 (var. emarginata E. J. Palmer), and a copiously pubescent one (var. 

 arizonica (Rydb.), E. J. Palmer, A. arizonica Rydb.). Both of these 

 forms occur in Arizona. 



26. EYSENHARDTIA. Kidneywood 



Plant shrubby or arborescent; leaves pinnate, the leaflets numerous, 

 glandular-punctate; flowers many, small, in spikelike terminal 

 racemes; corolla white, nearly regular; stamens 10, diadelphous; 

 pods indehiscent, 1-seeded, flat, long-exserted. 



The wood of some of the species is reputed to have diuretic prop- 

 erties and is fluorescent when soaked in water. The plants are browsed 

 by cattle, horses, goats, and deer, notwithstanding the rather disagree- 

 able odor of the herbage. 



1. Eysenhardtia polystachya (Ortega) Sarg., Silv. North Amer. 3: 29. 



1892. 



Viborquia polystachya Ortega, Hort. Matr. Dec. 66. 1798. 

 Eysenhardtia orthocarpa (A. Gray) S. Wats., Amer. Acad. 

 Arts, and Sci. Proc. 17: 339. 1882. 



Pinal, Cochise, and Pima Counties, 3,500 to 5,000 feet, usually 

 among rocks in canyons, May to August. Southern Arizona and 

 Mexico. 



27. DALEA. Indigobush, peabush 



Glandular-punctate herbs or shrubs; leaves odd-pinnate, rarely 

 unifoliolate or digitate; bracts deciduous; calyx 5-toothed, persistent ; 

 petals clawed; stamens 9 or 10, rarely 7 or 8; pod small, indehiscent. 



Most of the perennial species are ornamental, especially when 



