FLOWERING PLANTS AND FERNS OF ARIZONA 289 



3. Oxybaphus coccineus Torr., U. S. and Mex. Bound. Bot. 169. 1859. 



AUionia coccinea Standi., Contrib. U. S. Natl. Herbarium 12: 

 339. 1909. 



Southern Apache and Coconino Counties to Cochise, Santa Cruz, 

 and Pima Counties, 4,000 to 6,500 feet, open pine woods and grassy 

 slopes, May to August. New Mexico, Arizona, and Sonora. 



The showiest of the Arizona species, with brilliant carmine-red 

 flowers. 



4. Oxybaphus glaber S. Wats., Amer. Nat. 7: 301. 1873. 



AUionia glabra Kuntze, Rev. Gen. PL 2: 533. 1891. 



Hopi Indian Reservation, Navajo County (Zuck in 1897, Hough 53), 

 August. Kansas to Utah, south to Chihuahua and northeastern 

 Arizona. 



The Indians are reported to have treated wounds with an infusion 

 of the leaves. 



5. Oxybaphus linearis (Pursh) Robinson, Rhodora 10: 31. 1908. 



AUionia linearis Pursh, Fl. Amer. Sept. 728. 1814. 



Apache County to Mohave County, south to Cochise and Pima 

 Counties, 4,500 to 8,000 feet, often in pine woods. South Dakota and 

 Montana to northern Mexico. 



Occurs in two forms, about equally common throughout the area of 

 distribution in Arizona. These are (1) the typical form with linear 

 to narrowly lanceolate, sessile or subsessile leaves; (2) var. decipiens 

 (Standi.) Kearney and Peebles (AUionia decipiens Standi.), with 

 broader, sometimes ovate-lanceolate, short-petioled leaves. 



6. ALLIOXIA 



Plants herbaceous, annual or perennial, usually glandular-pubescent; 

 stems prostrate; leaves opposite, petioled; involucres solitary on axil- 

 lary peduncles, 3-flowered; perianth campanulate-rotate; fruit flat- 

 tened, the dorsal (seemingly the inner) face bearing 2 rows of stipitate 

 glands. 



Key to the species 

 1. Fruit with a broad entire or subentire wing on the ventral side, the outer 



margin as in A. incarnata; perianth 6 mm. long 1. A. cristatat. 



1. Fruit not winged on the ventral side; perianth more than 6 mm. long (2). 

 2. Plant perennial; outer margin of the fruit strongly incurved so as to 

 cover nearly the entire dorsal surface, usually with about 3 

 broadly triangular nonglandular teeth on each side, seldom 



entire 2. A. incarnata. 



2. Plant annual; margin of the fruit spreading or moderately incurved, 

 with several relatively slender gland-tipped teeth on each side 

 3. A. GLABRA. 



1. AUionia cristata Standi., Field Museum Nat. Hist. Bot. Ser. 8: 10. 

 1930. 



Wedelia cristata Standi., Contrib. U. S. Natl. Herbarium 12: 



331. 1909. 

 Wedeliella cristata Cockerell, Torreva 9: 167. 1909. 



Known onlv from the type collection at Holbrook, Navajo Count v 

 {Zuck in 1896). 



