FLOWERING PLANTS AND FERNS OF ARIZONA 77»5 



scarcely exserted from the calyx, the upper lip erect, notched; stamens 

 4, paired; nutlets oblong-ovate, smooth. 



1. Moldavica parviflora (Xutt.) Britten in Britt. and Brown, Illus. 

 Fl. ed. 2, 3: 115. 1913. 



Dracocephalum parviflorum Xutt., Gen. PL 2: 35. 1818. 



Coconino, Gila, eastern Maricopa, and Pinal Counties, 3.500 to 

 7.000 feet, pine woods, April to June. Canada to New Mexico and 

 Arizona. 



11. PRUNELLA. Selfheal. 



A small perennial herb; leaves oblong, long-petioled, subentire; 

 flowers in dense terminal bracteate spikes, the bracts sheathing;; calyx 

 2-lipped, the upper lip truncate, bearing 3 cusps, the lower teeth 

 essentially free; corolla violet, the upper lip galeate, enclosing the 

 stamens; stamens 4, paired; nutlets smooth, ovate. 



1. Prunella vulgaris L., Sp. PL 600. 1753. 



White Mountains (Apache County) and Kaibab Plateau (Coconino 

 County) to the mountains of Greenlee, Graham, and Pima Counties. 

 7,000 to 9,000 feet, moist ground, June to September. Throughout 

 the cooler parts of North America; Eurasia. 



The plant was formerly used as a domestic remedy for various 

 disorders. 



12. DRACOCEPHaLUM. False-dragoxhead 



Perennial herbs; stems erect, stifhsh; leaves glabrous, serrate, sessile; 

 flowers in terminal, showy racemes or panicles; calyx 5-toothed, 

 tubular; corolla rose-colored or pallid, funnelform with an inflated 

 throat and an arched entire upper lip; stamens 4, in 2 pairs, included 

 in the galea or but slightly exserted, the longer pair attached near 

 the middle of the tube. 



A specimen which may represent an undescribed species of Draco- 

 cephalum (Physpstegia) } although identified by Gray as Physostuj'a 

 uirffiniana (L.) Benth. var. obovata (Ell.) A. Gray, was collected at 

 Santa Cruz, Sonora {Wright 1530;, about 10 miles south of the border 

 of Arizona. 



13. LEOXURUS. Motherwort 



Plant herbaceous, tall, puberulent or glabrate; leaves long-petioled. 

 the blades 3-parted, the divisions incised; flowers in axillary clusters 

 much shorter than the leaves; calyx campanulate, 5-veined, the teeth 

 triangular-aristate, somewhat unequal in length; corolla pink, marked- 

 ly bilabiate, the tube about equaling the calyx, the upper lip erect and 

 slightly concave, the lower lip spreading and 3-lobed; nutlets 3-sided, 

 truncate at apex. 



1. Leonurus sibiricus L., Sp. PL 584. 1753. 



Lakeside, Navajo County (Thornber 8902) and reported by Mrs. 

 Collom as occurring near Mormon Lake (Coconino County). Here 

 and there in the United States; naturalized from eastern Asia. 



14. MOLUCCELLA. Molucca-balm 



Plant annual, herbaceous, glabrous; leaves coarsely toothed, rotund, 

 petiolate; flowers several in the axils of the upper leaves; calyx with 



