ORDER 70. COMPOSITE. 183 



rigid, acute; pales narrowly linear ; pappus triangular-acuminate. Dry soils, Va. to 

 Ala. If. Stem purple, smooth. Corollas 6 7", slender. May, June. 



2 M. lanceolata Ph. Stem simple, leafy below; leaves ohlanceolate to lanceolate, 



mostly obtuse and petiolate : scales obtuse. Uplands, S. 1 2f. April June. 



3 HI. angnstlfolla Ph. Mostly branching, leafy; Ivs. narrow-lanceolate to linear, 



all acute ; scales acute. Swamps, S. If. Very handsome. July, Aug. 



70. ANTHEMIS, L. CIIAMOMILE, &c. Invol. hemispherical, with 

 subequal, small imbricated scales. Rays numerous, generally $ . Reccp. 

 chaffy (at least at summit), convex or conical. Disk-flowers 5 . Cypscla 

 ribbed, smooth, linear or clavate. Pappus a slight border, or 0. Herbs 

 with 1-3-pinnatifid leaves, usually strong-scented. (Rays white.) 



CHAM^MELUM. Hays pistillate. Cyp. teretish. Lvs. mostly alternate Nos. 1, 2 



MARUTA. Rays neutral. Cypselse clubshapcd or obovoid. Lvs. alternate No. 3 



1 A. arveiisis L. Corn C. St. erect, bushy, whitish-downy ; Ivs. bipinnatifid, segm. 



lance-lin. ; branches naked above. 1-headed : pales cuspidate, longer than the flowers. 

 (D Fields : not common. Resembles Mayweed, but inodorous. 815'. Eur. July. 



2 A. nobills L. Garden C, St. prostrate, branched from base, woolly ; Ivs. hairy, de- 



compound-pinnatifid, seg. lin. -subulate ; pales some shorter than the fls. ij. Gardens, 

 rarely in fields. Aromatic. Eur. Var. with fls. double (florets all radiate). Jl.-Sept 



3 A. Cot ula L. Mayweed. Nearly smooth, erect, bushy; Ivs. bipinnatifid, seg. lineat 



subulate ; pales bristly, shorter than the flowers. (J) Waysides : com. If. Hds. term - 

 nal, corymbed, disk yellow, rays white, showy. Ill-scented. Jn.-Sept. (Maruta, DC.) 



71. ACHILLJEA, L. MILLFOIL. YARROW. Invol. ovoid, of unequal, 

 imbricated scales. Rays 5 10, short, $ . Recep. flat, chaffy. Cyp. without 

 a pappus. H Leaves much divided, alternate. Heads small, corymbous. 



1 A. JHillefollnm L. Lvs. bipinnatifid, with linear, dentate, mucronate segments ; 



stem furrowed, corymbed at top ; sc. oblong, rays 4 5, short. Fields, waste grounds, 

 everywhere. 1 2f. June Sept. A variety with rose-purple flowers, is very pretty. 



2 A. ptarmlca L. Sneezewort. Leaves linear, acuminate, sharply serrate, smooth; 



hds. loosely corymbed ; rays 812, longer than invol. (double in cult.) Rare. 15'. 



72. LEUCANTHEMUM, Tourn. WHITEWEED. Invol. broad, de- 

 pressed, imbricated. Rays ? , numerous. Recep. flat, naked. Cyp. striate, 

 without pappus. if Lvs. alternate. Hds. solitary, disk yellow, rays white. 



1 L. vnlgare Lam. St. simple or branched; cauline Ivs. clasping, few, lance-oblong, 



obtuse, cnt-pinnatifid at base ; scales brown at the edge. Too common in our fields 



and pastures. 2f. Rays spreading 1J-'. July Sept. Europe. [N. Y. (Gerard.) 



/3. tubuliforme (Tenney). Ray-fls. tubular, very slender, 5-3-lobed. Po'keepsie, 



2 L. Parthenlum Godron. Feverfew. Branched ; Ivs. petiolate, 2-3-pinnate, sesnn. 



ovate, cut; hds. corymbed. Gardens, rarely in fields. 2f. Often double. (Matricaria,C-B.) 



73. MATRICARIA, Tourn. MOTHER-CAREY. Invol. scales imbrica- 

 ted, with scarious margins. Recep. conical or convex, naked. Rays 9 or 0. 

 Pap. a membranous border on the cyp., or 0. Herbs with alternate leaves. 

 J IH. dlscoidea DC. Hds. discoid, few, terminal; Ivs. sessile, 2-3-pinnately-parted, 



lobes small, linear-oblong, acute ; sc. oval, obtuse, white-edged, much shorter than the 



conical disk. 111. and W. Common in Cal. 3-8'. Disk 3" broad and high. Jl. Sept. 



2 1I. TANACETUM. English Hint. Downy; leaves oval, serrate, lower petiolate : head* 



email, corymbed, discoid. Europe. 1 2f. Aromatic. Jl. Aug. (M. Balsamitae C-B.) 



74. TANACETUM, L. TANSY. Invol. hemispherical, imbricate, the 



