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



purple brown base; involucre double, the outer phyllaries narrow, 

 herbaceous, the inner ones broad, membranous; achenes strongly 

 dorso-ventrally compressed, sometimes wing-margined; pappus a 

 small cup, or obsolete. 



Several species of this genus are well known as cultivated orna- 

 mentals. 



Key to the species 



1. Scapose or subscapose, usually less than 30 cm. high; heads solitary; rays 



yellow throughout; achenes with thick corky wings 3. C. douglasii. 



1. Leafy-stemmed, usually 30 cm. high or more; heads loosely cymose-panicled; 

 rays yellow with a purple-brown base (2) . 



2. Achenes with thin wings 1. C. cardaminefolia. 



2. Achenes wingless 2. C. tinctoria. 



1. Coreopsis cardaminefolia (DC.) Torr. and Gray, Fl. North Amer. 

 2: 346. 1842. 



Calliopsis cardaminefolia DC, Prodr. 5: 568. 1836. 



Near Flagstaff, Walnut Canyon, and Oak Creek (Coconino County), 

 5,600 to 7,000 feet, openings in pine forest, rich moist soil, June to 

 September. Kansas to Louisiana, north-central Arizona, and north- 

 ern Mexico. 



*2. Coreopsis tinctoria Nutt., Acad. Nat. Sci. Phila. Jour. 2: 114. 

 1821. 



In low ground, Minnesota and Manitoba to Louisiana, west to 

 British Columbia and New Mexico, and reported from Arizona. 



Commonly cultivated in gardens under the name calliopsis, and 

 frequently escaping both east and west of the range here given. 



3. Coreopsis douglasii (DC.) H. M. Hall, Calif. Univ. Pub. Bot. 3: 

 140. 1907. 



Leptosyne douglasii DC, Prodr. 5: 531. 1836. 



Coconino, Mohave, Graham, Maricopa, and Pinal Counties, 2,000 

 to 3,500 feet, open places, February to May (sometimes August). 

 Arizona, southern California, and northern Baja California. 



Coreopsis atkinsoniana Dougl. is recorded (see footnote 87, p. 961, Sherff, p. 429) 

 from a meadow near the San Francisco Peaks (Lemmon 4159, collected in 

 1884). As the normal range of the species is from southern Canada to Oregon 

 and South Dakota, the specimen was probably a waif. 



72. COREOCARPUS ss 



Branching suffrutescent perennial ; leaves opposite, pinnately divided 

 into 3 or 5 linear lobes; heads small, cymose, radiate, yellow; involucre 

 of 5 to 8 subequal, 2-seriate, submembranous, dark-lined phyllaries; 

 rays pistillate; achenes oblong, strongly dorso-ventrally compressed, 

 with 2 pectinately divided wings; pappus none, or of 1 or 2 retrorsely 

 spinulose awns. 



1. Coreocarpus arizonicus (A. Gray) Blake, Amer. Acad. Arts and 

 Sci. Proc. 49: 344. 1913. 



Leptosyne arizonica A. Gray, ibid. 17: 218. 1882. 



Santa Cruz and Pima Counties, 3,000 to 5,000 feet, rich soil along 



88 Reference: Blake, S. F. a redisposition of the species heretofore referred to leptosyne 

 Amer. Acad. Arts and Sci. Proc. 49 (Gray Herbarium Contrib. 41): 342-345. 1913. 



