FLOWERING PLANTS AND FERNS OF ARIZONA 781 



Several species of this genus have been used in domestic medicine. 

 M. menthaefolia has limited value as a forage plant and is sometimes 

 cultivated by the Hopi Indians, who use it as a potherb, drying the 

 plants for use in winter. 



Key to the species 



1. Flowers in terminal heads; leaf blades ovate, subsessile, commonly 2 to 3 cm. 

 wide; corolla purple 1. M. menthaefolia. 



1. Flowers in axillary clusters; leaf blades oblong or elliptic, commonly 1 to 1.5 

 cm. wide, on petioles usually 5 to 10 mm. long, or longer; corolla whit- 

 ish (2). 

 2. Bracts strongly reflexed, usually puberulent and whitish or purple, only the 



midvein at all prominent 2. M. a tjstbo Montana. 



2. Bracts spreading or ascending, glabrous on the upper surface, 3 of the veins 

 usually prominent 3. M. pectinata. 



1. Monarda menthaefolia Graham, Edinb. Phil. Jour. 1829: 347. 



1829. 



Monarda strieta Wooton, Torrey Bot. Club Bui. 25: 263. 1898. 

 Moriardamollislj.YSiT. menthaefoliaF ema\d,~Rh.odora3: 15. 1901. 



Apache County to Coconino County, south to Graham and Pima 

 Counties, 5,000 to 8,000 feet, mostly in pine forest, summer. Canada 

 to New Mexico and Arizona. 



2. Monarda austromontana Epling, Madrono 3: 28. 1935. 

 Navajo County to Cochise, Santa Cruz, and Pima Counties, 5,000 



to 8,500 feet, mesas and slopes, usually with grasses, late summer. 

 Southwestern New Mexico, Arizona, and northern Mexico. 



3. Monarda pectinata Nutt., Acad. Nat. Sci. Phila. Jour. ser. 2, 1: 82. 



1847. 

 Apache County to Coconino, Yavapai, and Gila Counties, also at 

 Avondale (Maricopa County) where probably from seeds carrie'd 

 down by floodwater, commonly 5,000 to 7,000 feet, late summer. 

 Nebraska and Colorado to Texas and Arizona. 



18. HEDEOMA. 32 Mock-pexxyroyal 



Small perennial herbs; leaves small, simple, essentially sessile; 

 flowers in small cymules in the axils of the upper leaves, these either 

 bractlike or not much reduced; calyx tubular, the teeth relatively 

 short, the upper 3 teeth usually joined below the middle, the lower 

 2 teeth free, subulate, longer than the upper teeth, bristly with stifhsh 

 hairs, the orifice of the calyx more or less hispid-annulate; corolla 

 rose, lavender, or white, tubular; stamens 2, exceeding the corolla 

 tube; nutlets smooth, oblong. 



The genus Hedeoma is largely confined to the Texan- Arizona n 

 region, but occurs also in South America. Probably some of the 

 Arizona species are diaphoretic and stimulant-aromatic like H. 

 pulegioides (L.) Pers., the American pennyroyal of the eastern United 

 States. 



32 Reference: Epling, C, and Stewart, Wm. S. a revision of hedeoma with a review of allied 

 genera. Repert. Spec. Xovarum Regni Veg. Beih. 115: L-50. 1939. 



