Cotula. POLYGAMIA SUPERFLUA. 437 



Root nnnual, ramous. Stem short, furnishing numerous, 

 approximate, erect branches, particularly near the base, which 

 are at first simple, but as (he plants advance, they furnish a 

 branchlet from the axill of each leaf; all are round, smooth, 

 and glaucous ; general height of the whole plant from one to 

 two feet. Leaves alternate, one under each branch and 

 branchlet, linear, stem-clasping, bipinnatitid, and pinnatifid ; 

 segments sometimes obtuse, others triflingly acute, from one 

 to three inches long. Flowers large, of a lively yellow, soli- 

 tary, on long terminal, round, glaucous, smooth peduncles. 

 Calyx ; scales oblong, imbricated ; margins scariose. Corol, 

 it is in general entirely composed of numerous, hermaphro- 

 dite, tubular, five-cleft florets ; more rarely radiate with ligu- 

 late, three-toothed females. Seeds with a margin round the 

 apex, which often projects inward like a hornlet. Recepta- 

 cle convex, naked, dotted. 



MATRICARIA. Schreb. gen. N. 1308. 



Calyx hemispherical, imbricated ; marginal scales solid. 

 Receptacle naked. Pappus none. 



M. suaveolens. Willd, iii. 2161. 



Annual, erect, ramous. Leaves super-decompound, fili- 

 form ; ray white ; disk yellow. Receptacle conical. 



A native of Ilindoostan, and Persia. Flowering time the 

 cold season in the Botanic jyarden. 



COTULA. Schreb. gen. N. 1310. 



Receptacle almost naked. Pappus marginate. Florets 

 of the disk four-cleft; of the ray, scarcely any. 



C. stnapijolia. Bucli. 



Annual, sub-erect. Leaves alternate, petioled, pinnatifid, 

 or lyrate, serrate, hairy. Flowers floscular, small, sub-ter- 

 minal, peduncled. 



