WOOTOW AND STANDLEY FLORA OF NEW MEXICO. 727 



2. Flaveria repatida Lag. Gen. & Sp. Nov. 33. 1816. 

 Type locality: "Nova Hispania." 



Range: Texas and New Mexico, south to tropical America. 



New Mexico: Pajarito Park; Las Vegas; Mesilla Valley; above Tularosa; south of 

 Roswell; Lake Arthur; Carlsbad; Guadalupe Mountains. Valleys, especially in cul- 

 tivated ground, in the Lower and Upper Sonoran zones. 



A common weed in cultivated fields of the Rio Grande and. Pecos valleys. 



3. Flaveria campestris J. R. Johnston, Proc. Amer. Acad. 39: 287. 1903. 



Type locality: Courtney, Missouri. (No type is designated, but the first specimen 

 cited is from this locality.) 

 Range : Missouri and Kansas to Colorado and eastern New Mexico. 

 New Mexico: Roswell (Coc^ereZZ). 



112. SARTWELLIA A.Gray. 



Branched annual, 30 to 60 cm. high, with entire opposite linear leaves and numerous 

 small heads of yellow fiowers in corymbiform cymes; bracts 5, oval or oblong; rays 

 mostly entire, obovate; achenes cyUndric," striate; pappus a cup with fimbriolate 

 edge. 



1. SartweUia flaveriae A. Gray, PI. Wright. 1: 122. pi. 6. 1852. 



Type locality: "Prairies of the Rio Seco, Texas, and mountain valleys and plains 

 of the Pecos, and base of the Guadalupe Mountains." 



Range: Western Texas to southeastern New Mexico. 



New Mexico: White Sands; White Mountains; Roswell; Lake Arthur; Buchanan; 

 mesa west of Organ Mountains. Plains and rocky hills, in the Upper Sonoran Zone. 



113. MACDOUGALIA Heller, 



Loosely woolly, cespitose perennial with mostly basal linear leaves and scapelike 

 monocephalous stems; involucre hemispheric, the bracts lanceolate, acute, coriaceous, 

 about 12 in each series, distinct, those of the inner series slightly longer and scarious- 

 margined; rays about 12, yellow; paleee of the pappus about 10, subulate-lanceolate, 

 with evident costag, attenuate into a bristle-like cusp. 



1. Macdougalia bigelovii (A. Gray) Heller, Bull. Torrey Club 25: 629. 1898. 



Actinella bigelovii A. Gray, PI. Wright. 2: 96. 1853. 



Type locality: Mountains near the Copper Mines, New Mexico. Type collected 

 by Bigelow. 



Range: Mountains of New Mexico and Arizona. 



New Mexico: Santa Rita; Agua Fria. 



114. HYMENOXYS Cass. Colorado rubber plant. 



Herbaceous perennials or annuals with gland-dotted alternate divided leaves and 

 few or numerous showy pedunculate heads; involucre of 2 series of bracts, the outer 

 ones thick, united at the base, the inner ones thinner and broader, often with fimbri- 

 ate margins; ray flowers pistillate or the heads homogamous; rays pale to bright yel- 

 low; achenes turbinate, pubescent; pappus of 5 to 12 conspicuous hyaline pointed 

 paleae. 



KEY to the species. 



Annuals with often spreading branches; inner bracts not very dif- 

 ferent from the outer; disk corollas distinctly expanded at the 

 mouth. 

 Plants tall, 30 to 50 cm. high; heads about 8 mm. in diameter. . 1. H. cockerellii. 

 Plants low, 20 cm. high or "ess, more branched; heads less than 

 8 mm. in diameter. 



