662 MISC. PUBLICATION 4 2 3, U. S. DEPT. OF AGRICULTURE 



3. Leaf blades uniformly green above (4) . 



4. Leaf blades commonly shorter than the petiole, suborbicular, thickish; 

 anther cells narrowed or beaklike at the apparent apex. 



4. P. CHLORANTHA. 



4. Leaf blades equaling or longer than the petiole, elliptic or obovate-oval, 

 thin; anther cells not or very slightly narrowed at the apparent apex. 



5. P. ELLIPTICA. 



1. Pyrola secunda L., Sp. PI. 396. 1753. 



Mountains of Apache, Coconino, Graham, and Pima Counties, 

 7,200 to 9,500 feet, coniferous forests, July and August. Widely 

 distributed in the Northern Hemisphere. Sidebells pyrola. 



2. Pyrola aphylla J. E. Smith, Rees's Cycl. 29: No. 7. 1814. 

 "Northern Arizona," probably near Kanab, Utah (Mrs. Thompson 



in 1872). 



This species, mainly of the Pacific Coast States, is represented in 

 Arizona by var. paucifolia Howell (var. joliosa Andres?) with basal 

 leaves having distinct but very small blades. 3 



3. Pyrola picta J. E. Smith, Rees's Cycl. 29: No. 8. 1814. 



Pinal eno Mountains, Graham County, 9,700 feet (Shreve 4304, 

 Thornber and Shreve 8048, in part). Montana to British Columbia, 

 south to New Mexico, Arizona, and California. 



4. Pyrola chlorantha Swartz, Svenska Vetensk. Akad. Handl. 1810: 



190. 1810. 

 Lukachukai and White Mountains (Apache County) and Kaibab 

 Plateau (Coconino County) to the Chiricahua Mountains (Cochise 

 County) and Santa Catalina Mountains (Pima County), 6,500 to 

 10,000 feet, coniferous forests, July and August. Canada to the 

 District of Columbia, New Mexico, Arizona, and California; Europe. 



5. Pyrola elliptica Nutt., Gen. PI. 1: 273. 1818. 



Pinal eno Mountains, Graham County, 8,800 feet (Shreve 5257), 

 Santa Catalina Mountains, Pima County, 7,500 feet (Peebles et al. 

 2524), reported also from the Grand Canyon, July. Canada to 

 the District of Columbia, New Mexico, and Arizona. Shinleaf. 



5. MONESES 



Resembles Pyrola except in the characters given in the key to the 

 genera. 



1. Moneses uniflora (L.) A. Gray, Man. 273. 1848. 



Pyrola uniflora L., Sp. PI. 397. 1753. 



San Francisco Peaks (Coconino Countv), Baldy Peak (Apache 

 County), 10,000 to 11,500 feet, July and August. Widely distri- 

 buted in the cooler parts of the Northern Hemisphere. 



One of the most attractive of the Arizona high mountain plants. 



6. ARBUTUS. Madrono 



Usually a tree, up to 15 m. (50 feet) high, with smooth, thin, ex- 

 foliating bark; leaves alternate, thick, evergreen, somewhat shiny 



3 W. H. Camp (Aphyllous forms in Pyrola. Torrey Bot. Club Bui. 67: 453-465. 1940) has pointer 1 , out 

 recently that several collections, including one by Mearns at Baker Butte, Coconino County, Ariz., comprise 

 both P. picta and aphyllous or nearly aphyllous forms, under the same number. He concludes that P. 

 aphylla is merely an extreme form of P. picta (forma aphylla (J. E. Smith) Camp). 



