406 CARDUACEAE. 



Chrysanthemum frutescens L., Marguerite, of the Canary Islands, a gla- 

 brous shrub about 3° high, with green leaves 2'-4' long, pinnately cleft into 

 narrow segments, the few or solitary heads of white flowers on slender erect 

 peduncles, the rays about f long, is grown in flower-gardens. 



Chrysanthemum morifolium Eamat., Garden Chrysanthemum, Asiatic, 

 with ovate short-petioled variously toothed, pubescent leaves, the flowers 

 ^*arious in color and size, mostly double, is grown in a variety of forms. 

 Chrysanthemum indicum L., also Asiatic, differs in having glabrous foliage. 



Chrysanthemum coronarium L., Annual Chrysanthemum, of the Medi- 

 terranean region, occasional in flower-gardens, is a glabrous branched annual, 

 2°-4° high, with deeply pinnatifid leaves, their narrow segments toothed or 

 incised, the peduncled heads about 2' broad, the rays light yellow, the disk- 

 flowers yellow. 



Chrysanthemum carinatum L., Keeled Chrysanthemum, African, also 

 annual and occasionally grown, is glabrous, li°-2° high, with deeply pinnatifid 

 leaves, their segments toothed or lobed, the stout-peduncled beads 2'-3' broad, 

 their involucre-bracts keeled, the notched rays variously colored, the disk- 

 flowers purple. 



Chrysanthemum anethifolium Brouss., Glaucous Marguerite, of the 

 Canary Islands, a shrub similar to C. frutescens L., but pale green and glau- 

 cous, with very finely divided leaves, their segments narrowly linear, the 

 numerous heads slender-peduncled, with white rays about V long, is also occa- 

 sionally grown. 



Chrysanthemum maximum Eamond, Large-flowered Ox-eye Daisy, 

 Shasta Daisy, of the Pyrenees, resembles C. Leucanthemum L., but has 

 larger leaves, the basal ones up to 4' long, spatulate or oblanceolate, obtuse 

 and serrate, the large head always solitary, with numerous white rays I'-l^' 

 long. The plant grown as Shasta Daisy is said to be a hybrid of this with 

 some other species. 



Ageratum conyzoides L., Wild Ageratum, native of tropical America 

 and widely distributed, recorded as a weed by Lefroy, is not attributed to Ber- 

 muda by other authors and has not been observed by recent collectors. It is 

 an annual herb, 3° high or less, wiih ovate toothed leaves and terminal 

 corymbs of small heads with blue or white flowers, the pappus of 5 to 7 narrow 

 pointed scales, the involucre scales oblong, abruptly acute, nearly glabrous. 



Ageratum Houstonianum Mill., Garden Ageratum, tropical American, is 

 similar to the preceding, but the involucral bracts are linear-lanceolate, acumi- 

 nate and pubescent. It is commonly grown in flower-gardens. [A. mexicanum 

 Sweet.] 



Tithonia rotundifolia (Mill.) Blake, Tall Tithonia, Mexican, planted 

 for ornament, is an herb 5°-6° tall, with variously lobed and toothed, thin acute 

 leaves 4-8' long, green above, pale and canescent with short appressed hairs 

 beneath, the large heads on long peduncles thickened toward the top, the 

 involucre of large, ovate to lanceolate, glabrous striate-nerved bracts in 2 or 3 

 series, the bright yellow rays li'-2' long. [T. tagetiflora Desf.] 



Coreopsis grandiflora Hogg, Large-flowered Tickseed, North American, 

 grown in flower-gardens, is perennial, l°-2i° ^^S^, glabrous or pubescent, the 

 stem bearing several pairs of pinnately parted petioled leaves with linear 

 segments, the basal leaves linear-oblong, entire ; the heads of bright yellow 

 flow^ers are long-peduncled, the 6-10 rays toothed, the achenes broadly winged. 



Coreopsis tinctoria Nutt., Garden Tickseed, North American, a nearly 

 glabrous annual, l°-5° high, with leaves pinnately divided into narrow seg- 

 ments, long-peduncled heads, with 6-10 yellow rays brown at base, V-V long, 

 and flat, oblong achenes with scarcely any pappus, is grown in flower-gardens. 



