Maruta. composite. 391 



obpyramidal, ribbed, smooth, without a pappus. — Annual fcetid weeds, with tripinnately 

 divided leaves, and solitary heads terminating the branches. Rays white, often deflexed ; 

 the disk yellow. 



1. Maruta Cotula, DC. Common Fetid Chamomile. May-weed. 



Smoothish ; scales of the involucre with whitish margins ; receptacle conical, chaffy at the 

 summit ; the chaff subulate. — DC. prodr. 6. p. 13 ; Torr. ^- Gr. fl. N. Am. 2. p. 408. 

 Anthemis Cotula, Linn. sp. 3. p. 894 ; Engl. hot. t. 1972 ; Nutt. gen. 2. p. 171 ; Bigel. fl. 

 Bost. p. 314 ; Torr. compend. p. 308 ; Bart. veg. mat. med. 1. 14 ; Beck, hot. p. 212 ; Hook. 

 fl. Bor.-Am. 1. p. 318 ; Darlingt. fl. Cest. p. 489. 



Whole plant fetid. Stem 9-12 inches high, erect, much branched. Leaves pale green, 

 slightly pubescent ; ultimate segments narrowly linear, acute. Heads on slender peduncles. 

 Scales of the involucre lanceolate, hairy. Rays about 1 2, at length refle.xed. Disk large and 

 strongly convex. Achenia oblong, usually tuberculate in lines. 



Farm-yards, road-sides, etc. June - November. Introduced from Europe. A troublesome 

 weed, extensively naturalized in many parts of the State. 



30. ANTHEMIS. Linn. ; DC. prodr. 6. p. 4; Endl. gen. 2639. CHAMOMILE. 



■[ From \i)fi Greek, (oithemos, a flbwct ; in allasion to the profusion of its blossoms.] 



Heads many-flowered ; the rays pistillate. Scales of the involucre imbricated in few series. 

 Receptacle convex or conical, with membranaceous chaff among the flowers. Achenia 

 terete or very obtusely quadrangular, striate or smooth, without a pappus or with a minute 

 crown. — Odorous herbs, with pinnately dissected leaves. Heads on naked terminal 

 peduncles. Rays mostly white ; the disk yellow. 



1. Anthemis arvensis, Linn. Wild Chamomile. 



Diffuse, erect, pubescent ; leaves pinnately parted , the lobes linear-lanceolate, approximate, 

 and with the teeth very acute ; the branches leafless at the summit, bearing solitary heads ; 

 scales of tlie involucre with white scarious margins, obtuse ; chaff of the conical receptacle 

 lanceolate, acuminate ; achenia crowned with a very short, somewhat toothed margin {DC. 

 I. c.).: — Engl. hot. t 602 ; Pursh, fl. 2. p. 562 ; Torr. compend. p. 307 ; Beck, hot. p. 212 ; 

 Darlingt. fl. Cest. p. 488 :, Torr. ^ Gr. fl. N. Am. 2. p. 408. 



Annual. Stem about a foot high, erect, branching. Leaves clothed witii a grayish pubcs 

 cence, bipinnately dissected ; the segments linear and acute. Heads (including the rays) 

 about an inch in diameter. Involucre hairy. Achenes smoothisii, with a tiiick narrow margin. 



Fields, cultivated grounds, etc.; rare. Cambridge, Washington county (Z)?-. Stevenson). 

 North-Salem, Westchester county {Dr. Mead). June - August. 



