OUI.KH 70. COMPOSITE. 183 



rteid. acute; pale? 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 petiolatc : scales obtuse. Upland?, S. 1 2f. April June. 



3 m. angustlfolia Ph. Mostly branching, leafy; Ivs. narrow-lanceolate to linear, 



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



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

 subequal, small imbricated scales. Rays numerous, generally 5 . Reccp. 

 chaify (at least at summit), convex or conical. Disk-flowers $ . Cypsela 

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

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



CHAM^EMELUM. Rays pistillate. Cyp. teretish. Lvs. mostly alternate Nos. 1, 2 



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



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



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

 Fields : not common. Resembles Mayweed, but inodorous. & 15'. Eur. July. 



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



compound-pinnati'fid, seg. lin. -subulate ; pales some shorter than the fls. y. Gardens. 

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



3 A. Cotula L. Mayweed. Nearly smooth, erect, bushy; Ivs. bipinnatifid, seg. linear 



subulate ; pales bristly, shorter than the flowers. 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, it Leaves much divided, alternate. Heads small, corymbous. 



1 A. Jflillefoliiim L. Lvs. bipinnatifld, with linear, dentate, mucronate segments; 



stem furrowed, corymbed at top ; sc. oblong, rays 45, 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 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. viilgare Lam. St. simple or branched ; catiline Ivs. clasping, few. lance-oblong, 



obtuse, cut-pin natifld at base ; scales brown at the edge. Too common in our fields 



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



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



2 L. ParlhenlHm Godron. Feverfew. Branched ; Ivs. petiolate, 2-3-pinnate, segm. 



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 $ or 0. 

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



1 Iff. discoidea DC. lids, 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 1TI. TANACETUM. English Mint. Downy; leaves oval, serrate, lower petiolare : heads 



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



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



