912 MISC. PUBLICATION 42 3, U. S, DEPT. OF AGRICULTURE 



Greene, C. speciosus var. (?) arizonicus Greene, C. arizonicus Greene) 

 has been collected near Oraibi (northern Navajo County), and is 

 apparently more common in Cochise, Santa Cruz, and eastern Pima 

 Counties, 4,000 to 7,000 feet, chiefly along streams, September and 

 October, type of C. speciosus var. arizonicus from the Santa Rita 

 Mountains (Brandegee). 



Var. turbinatus (Jones) Blake (C. turbinatus (M. E. Jones) Rydb.) 

 is known from Adamana and Billings (Apache County), Canaan 

 ranch, Kaibab Plateau (northern Coconino County), 5,000 to 5,500 

 feet, sandy saline soil, September and October, type from Canaan 

 ranch (Jones 6066c). 



Var. gnaphalodes (Greene) H. M. Hall (C. speciosus var. gnaphalodes 

 Greene, C. gnaphalodes Greene) occurs near the Carrizo Mountains 

 (northern Apache County), on the' Kaibab Plateau and vicinity of 

 Flagstaff (Coconino County), with a doubtful record from the Chiri- 

 cahua Mountains, Cochise County (Lemmon in 1881), 6,000 to 7,000 

 feet, gravelly-sandy slopes and mesas, July to September. Some of 

 the Arizona specimens have leaves up to 2.5 mm. wide and approach 

 var. speciosus (Nutt.) Hall. 



20. LESSINGIA <» 



Low branching annual, tomentose below, glandular above; leaves 

 alternate, oblong-obovate to linear, entire or toothed; heads small, 

 solitary, yellow, discoid but with enlarged and palmate outer corollas ; 

 involucre graduated; achenes turbinate, silky; pappus of numerous 

 unequal brown bristles. 



*1. Lessingia lemmoni A. Gray, Amer. Acad. Arts and Sci. Proc. 21: 

 412. 1886. 



Lessingia germanorum var. lemmonii J. T. Howell, Calif. Univ. 

 Pub. Bot. 16: 25. 1929. 



Ash Fork, Yavapai County, the type locality (Lemmon in 1884), 

 Peach Springs, Mohave County (Lemmon in 1884), about 5,000 feet, 

 June and July. Southern California and central Arizona. 



This genus is known otherwise only from California, western Nevada, 

 and northern Baja California. Because the data of locality on the 

 labels of Lemmon's specimens are not always trustworthy, it must 

 be regarded as questionable whether Lessingia is truly a component 

 of the Arizona flora. The localities cited in the preceding paragraph 

 have been visited repeatedly by other collectors, none of whom have 

 found L. lemmoni. 



21. APHANOSTEPHUS 



Low somewhat cinereous-puberulous annual, branching; leaves 

 linear to spatulate or obovate, the lower ones crenate-toothed or pinna t- 

 ifid, the upper leaves often entire ; heads rather small, solitary at the 

 tips of the stem and branches, the rays white or purple-tinged, the disk 

 yellow; involucre broad, the phyllaries about 3-seriate, somewhat 

 graduated, lanceolate, green-centered with scarious margin and apex; 

 achenes ^ prismatic or subterete, about 10-ribbed; pappus a very 

 short ciliolate-fringed crown. 



64 Reference: Howell, J. T. a systematic study of the genus lessingia cham. Calif. Univ. Pub 

 Bot. 16: 1-44. 1929. 



