4,60 Order 70.— COMPOSITE. 



hds. erect, ovoid, sub3essile ; invol. tomentous. — % Fields, roadsides, banks of 

 streams, <fcc., Vt., N. H. St. 2 to 3f high, branching into a panicle of spioato 

 racemes. Lvs. very variable, but never attenuated to linear, now obtuse, now 

 acute, from tho same locality (Hanover, N. II. Ricard.) Hds. few-floworcd, 

 purplish. 

 5 A. biennis "Willd. Plant erect, smooth; lvs. bipinnately parted, upper ones 

 pinnatihd, all with linear, acute, and mostly incised lobes ; hds. sessile, arranged 

 in a close, narrow, leafy pauiclo of short spikes. — ^) Western State3 and north- 

 ward. Plant 1 to 3f high. Aug. — Oct. 



6 A. Abrotanum L. Southernwood. St. erect; lower lvs. bipinnate; 

 upper ones capillary, pinnate; invol. downy, hemispherical. — If A well known 

 shrubby plant iu gardens, about 3f high. Leaves alternate, much divided into 

 very narrow, linear segments. Flowers numerous, nodding, yellow. Native of 

 S. Europe. % 



7 A. boreali3 Pallas. C&spUous, silky-villous or smoothish ; st. simple ; lower 

 lvs. petiolate, linear-lanceolate, entiro towards the base, ternately, pinnately, or bi- 

 pinnately parted above, with linear lobes, upper linear, 3 to 5-cleft or entire ; hds. 

 hemispherical, spicato or racemous-paniculate. — ^[-Keweena Pt., Lake Superior 

 (Houghton, in N. Am. Fl.) St. 6 to 10' high. 



8 A Canadensis Mx. Sea Wormwood. St. erect or decumbent ; lvs. pin- 

 natifid with linear segments ; fls. subglobous, sessile, in a panicle of racemes. — 2£ 

 Rivers and lake shores, N. Eng. and Can. Shores of tho great lake3. St. 2 to 4f 

 high, much branched, sulcate, brownish, mostly erect. lids. 2 7 diam., numer- 

 ous, forming a Largo paniclo of racemes. Scales with a membranous margin. 

 Aug. 



9 A. cordata Mx. Glabrous, simple, densely paniculate; lvs. bipinnate-pubes- 

 cent, upper pinnate, segm. filiform or setaceous, alternate ; hds. ovoid-globous, 

 pedicellate, erect. — © On the sea-coast, N. II. to Ga. St. 3 to 5f high, strict. 

 Lvs. in many thread-liko and somewhat fleshy segm. ; hds. 1J" diam., in a strict, 

 dense paniclo. Outer scales ovate, inner scarious, elliptical. Aug., Sept. 



77. S0LI v VA Ruiz, tfc Pav. (To Salvator Soliva y a Spanish botan- 

 ist and physician.) Involucre of" 5 to 10 to 15 scales in one row; re- 

 ceptacle flat, naked ; fertile flowers in several rows, apetalous ; $ fls. 

 few, interior, with a 3 to 5-toothed corolla ; achenia obcomprcssed, tip- 

 ped with the persistent stylo and no pappus. — Little depressed herbs 

 with pinnately divided lvs. and sessile lids. 



S. nasturtiifolia DC. Plant very small, minutely pubescent; lvs. pinnately 5 

 to 9-parted, lobes oblong, obtuse; scales 10 to 15 ; ach. obcouic, rugous, crowned 

 with a dense tuft of wool instead of pappus. — S. Car., Ga., near tho coast, banks 

 of the Ogeeehee, growing with Sencbiera. Plant flat on tho ground, forming a 

 denso mat. Lvs. G to 10" long, lobes 1". Hds. disproportionately largo (2 to 3" 

 broad), axillary, depressed. Ach. wrinkled transversely. Mar., Apr. 



78. GNAPHA'LIUM, L. Cudweed. Everlasting. (Gr. yvdfyakov, 

 cotton or wool ; from the soft, cottony surface of the herbage.) Heads 

 discoid, heterogamous ; involucre imbricate with scarious, colored 

 scales ; marginal flowers subulate, pistillate, mostly in several rows ; 

 central flowers £ ; receptacle flat, naked ; pappus a single row of scab- 

 rous, hair-like bristles. — Herbs generally clothed with whitish wool. 

 Lvs. alternate, entire. 



* TTeads in terminal corymbous clusters Nos. 1—3 



* Heads in axillary, somewhat spicato clusters Nos. 4, 5 



X G. decurrens Ives. Lvs. decurrent, linear-lanceolate, very acute, naked above, 

 white and woolly beneath , fls. in dense, roundish, terminal clusters. — If A stout 

 species, covered with a dense, hoary pubescence. It grows in hilly pastures, &c, 

 N. II. Vt. to N t J. Stem 2 f high, with scattered leaves and spreading branches. 



