FLOWERING PLANTS AND FERNS OF ARIZONA 839 



1. Elytraria imbricata (Vahl) Pers., Syn. PL 1: 23. 1805. 



JusticiaimbricataYdihl, Eclog. Amer. 1: 1. 1796. 



Cochise, Santa Cruz, and Pima Counties, 3,600 to 5,000 feet, mesas 

 and slopes among rocks, April to September. Western Texas to 

 southern Arizona, southward to tropical America. 



2. DYSCHORISTE 



Plant herbaceous, canescent-puberulent; stems decumbent or 

 prostrate; leaves subsessile, the blades oblanceolate or obovate; 

 corolla violet or violet purple, moderately irregular, convolute in the 

 bud; stamens 4, the 2 pairs somewhat unequal in length; capsule 

 narrowly oblong; seeds 2 to 4. 



1. Dyschoriste decumbens (A. Gray) Kuntze, Rev. Gen. PI. 2: 486. 

 1891. 



Calophanes decumbens A. Gray, Syn. Fl., ed. 2, 2 1 : 325. 1886. 



Cochise, Santa Cruz, and Pima Counties, 4,800 to 5,500 feet, 

 plains, mesas, and foothills, in the open or with oaks, junipers, etc., 

 April to October. Western Texas, southern Arizona, and Mexico. 



3. RUELLIA 



Plants herbaceous, glandular-pilose in the inflorescence; stems most- 

 ly erect or ascending, branched; leaves petioled, the blades ovate; 

 calyx deeply 5-cleft or 5-parted; corolla violet, moderately irregular, 

 convolute in the bud; stamens 4, the 2 pairs somewhat unequal in 

 length; capsule narrow, often subclavate; seeds 6 or more. 



1. Ruellia nudiflora (Engelm. and Gray) Urban, Symb. Ant. 7: 382. 

 1912. 



Dipteracanthus nudiflorus Engelm. and Gray, Boston Jour. 

 Nat. Hist. 5: 229. 1845. 



Cochise, Santa Cruz, and Pima Counties, 2,300 to 4,000 feet, 

 canyons and foothills, usually among rocks, May to August. South- 

 ern Texas, southern Arizona, and Mexico. 



The var. glabrata Leonard is commoner in Arizona than the typical, 

 more pubescent form. R. nudiflora is worth cultivating as an orna- 

 mental because of its large, richly colored flowers. 



4. BERGINIA 



A low shrub with whitish branches; leaf blades narrowly lanceolate, 

 entire; flowers subtended by 2 bractlets, in interrupted leafy-bracted 

 spikes; bractlets and calyx lobes narrow, acute, rigid; corolla about 1 

 cm. long, pink, the limb bilabiate. 



*1. Berginia virgata Harv. ex Benth. and Hook., Gen. PI. 2: 1097. 

 1873. 

 The writers have seen no specimens from Arizona, but the plant has 

 been collected near Altar, Sonora, not far from the southern boundary 

 of the State. 



