ORDER 70. COMPOSITE. 183 



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

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



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



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



3 M. aiigHBttfolla Ph. Mostly branching, leafy; Ivs. narrow-lanceolate to linear, 



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



70. ANTHEMIS, L. CHAMOMII.E, &c. Tnvol. hemispherical, with 

 subcqual, small imbricated scales. Rays numerous, generally 2 . Reccp. 

 cliaffy (at least at summit), convex or conical. Disk-flowers 9. Cypscla 

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

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



CHAM^EMELTJM. Rays pistillate. Cyp. teretish. Lvs. mostly alternate No?. 1,3 

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



1 A. arvnsls L. Corn C. St. erect, bushy, whitish-downy : Ivs. bipinnatifld, segm. 



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

 (T) Fields : not common. Resembles Mayweed, but inodorous. 8 If/. Enr. July. 



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



compound-pinnatiftd, seg. lin. -subulate : pales some shorter than the fls. ~u Gardens, 

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



3 A. Cotiila L. Mayweed. Nearly smooth, erect, bushy; Ivs. bipinnatifld, seg. lineal 



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

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



71. ACHILL.2EA, L. Mii-i.Fon,. YARROW. Invol. ovoid, of unequal, 

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

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



1 A. imilefollnm L. Lvs. bipinnatifld, with linear, dentate, mncronate 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. Sneezeicort. Leaves linear, acuminate, sharply serrate, smooth; 



hds. loosely corymbed ; rays 8 12, 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 li. vnlgare Lam. St. simple or branched ; cauline Ivs. clasping, few. lance-oblong, 



obtuse, cut-pinnatifld at base ; scales brown at the edge. Too common in our fielcp 



and pastures. 2f. Rays spreading If. July Sept. Europe. [N. Y. (Gerard.) 



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



2 lit Parthenlum Godron. feverfew. Branched; Ivs. petiolate, 2-3-pinnate, segni. 



ovate, cut; hds. corymbed. Gardens, rarely in fields. 2f. Often double. (Matricaria.C-B.1 



73. MATRIOARIA, Toum. MOTHER-CAREY. Invol. scales imbrica- 

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

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



1 Iff. dlscoidea DC. Hds. discoid, few, terminal ; Ivs. sessile, 2-3-pinnately-partod, 



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

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



2 1J . TANACETUM. English Mint. Downy ; leaves oval, serrate, lower petiolate : heads 



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

 \ 



74. TANACETUM, L. TANSY. Invol. hemispherical, imbricate^ thf 



