COMPOSITJE. 220 CICHORIUM. 



3. X. SPINO'SUM. 



5'fe7« branching ; leaves ovate-lanceolate, somewhat 3-lobed, armed with 

 ternate spines at the base of the stalks. Waste grounds, Ms. Heads few, 

 axillary, sessile. Sept. — Nov. Prickly Clot-iceed. 



56. AMBRO'SIA. 



Ilead-s heterocephalous. Sterile. — Involucre of several 

 united scales, hemispherical, many-flowered ; anthers approx- 

 imate, but distinct; receptacle naked. Fertile. — Involucre 

 1-leaved, entire or 5 toothed, ] -flowered corolla 0; styles 

 2 ; stamens 0. 



Af/,fi^o(ria,, signifies in Greek, the food of the gods ; a term strangely m\a- 

 applied in these herbaceous weeds. Lvs. generally opposite. 



1. A. tri'fida. 



Hairv, rouo-h; leaves three lobed, serrate, the lobes oval-lanceolate, 

 acuminate ; /rwif with ti lines below tiie summit. A very tall, herbaceous 

 plant, not very common, found in hedges and low grounds in the valley of 

 Connecticut river. Stem .5 — 10 feet high, erect, branching, furrowed. 

 Leaves opposite, in 3 large, deep lobes with long points and close serratures. 

 Flowers mean and obscure, in long, leafless spikes, axillary and terminal. 

 Aug. Ann. Trifid-leaved Jlinbrosia. 



2. A. ARTEMISLEFO'LIA. L. A. elatior. P. 

 Leaves twice-pinnatifid, nearly smooth ; petioles ciliate ; racemes terminal, 



panicled ; stem virgate. A common and troublesome weed of the gardens, 

 «5i.c. far more worthy of its English than its Latin name. Stem 2 — 3 feet 

 high, branching, pubescent when young. Leaves with segments acute and 

 pa'rallel. Barren flowers, small, green, in terminal racemes, the fertile ones 

 sessile about the axils of the upper leaves. Aug. Sept. Ann. Hog-iceed. 

 fi. intcgrifolJa, (T. &^ G. A. integrifolia, Muh). Leaves ovate, acuminate, 

 serrate, bristly on both sides, ciliate at base, often some of them 3-lobed ; 

 racemes terminal, single or ternate. 



SrBOKDER IL LIGULIFLOR.E. 



Floicers all perfect, ligulate, in a radiatiform head. 

 Tribe VL CICHORACEiE. 



Branches of the style uniformly pubescent. Plants with a milky juice. Leaves alternate. 



57. CICHO'RIUM. 



Involucre double, the outer of o leafy scales, the inner of 

 about S linear ones; receptacle chaffy ; pappus scaly ; achenia 

 not rostrate, obscurely 5-sided. 



The ancient Egyptian name was chikourych, whence Or. >tt%a<gi), and 

 Eng. Succory. Oriental herbs with bright blue flowers, about 20 in a head. 



C. Intybus. 



F/o!ccr.s in pairs, axillary, sessile; lower leaves runcinate. A European 

 plant 2—3 feet high, with "large, showy, sky blue flowers, naturahzed in grass 

 fii^lds, by roadsides, and becoming quite common in many localities. Stem 

 round, with few long branches, rough. The upper leaves become cordate. 



