400 Order 70.— COMPOSITiE. 



hds. erect, ovoid, subsessUe ; invol. tomentous. — % Fields, toadsides, banks of 

 streams, &o., Vt., N. H. St. 2 to 3f high, branching into a panicle of spicate 

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

 acute, from the same locality (Hanover, W. H. Ricard.) Hds. few-flowered, 

 purplish. 



S A. biennis Willd. Plant erect, smooth ; Ivs. bipinnately parted, upper ones 

 pinnatifid, all with Haear, acute, and mostly incised lobes ; hds. sessile, arranged 

 in a dose, narrow, leafy panicle of short spikes. — @ Westei'n States and north- 

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



6 A. Abrotanum L. Southernwood. St. erect; lower Ivs, bipinnate; 

 uppor ones capillary, pinnate; invol. downy, hemisplierical. — 2f A well known 

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

 very narrow, linear segments. Flowers numerous, nodding, yellow. >fative of 

 S. Europe. \ 



1 A borealis Pallas. Ocespiious, silky-villous or smoothish ; st. simple ; lower 

 Ivs. petiolate, linear-lanceolate, entire towards the base, temately, pinnately, or bi- 

 pinnately parted above, witli linear lobes, upper linear, 3 to 5-cloft or entire ; hda. 

 hemispherical, spicate or raoemous-paniculate. — %■ Kqweena Pt., Lake Superior 

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



8 A. Canadensis Mx. Sea "W"ormwood. St. erect or decumbent; Ivs. pin- 

 natifid with linear segments ; fis. subglobous, sessile, in a panicle of racemes. — y 

 Elvers and lake shores, N. Bng. and Can. Shores of the great lakes. St. 2 to 4f 

 high, much branched, sulcate, brownish, mostly erect. Hds. 2'' diam., numer- 

 ous, forming a large panicle of racemes. Scales with a membranous margin. 

 Aug. 



9 A. oordata Mx. GJcii-rov, sample, densely paniculate; Ivs. bipinnate-pubes- 

 cent, upper piuuatc, o^.j i. filiform or setaceous, alternate; hds. ovoid-globous, 

 pedicellate, erect. — (5) On the sea-coast, 'S. H. to Ga. St. 3 to 5f high, strict. 

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

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



77. SOLM/'A Euiz. & Pav. (To Salvator Soliva, a Spanish botan- 

 ist and pbysician.) 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 ; aolienia obcompressed, tip- 

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

 with pinnately divided lvs. and sessile hds. 



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

 to O-parted, lobes oblong, obtuse; scales 10 to 15 ; ach. obconic, nigous, crowned 

 with a denso tu(t of wool instead of pappus. — S. Car., Ga., near the coast, banks 

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

 dense mat. Lvs. 6 to 10" long, lobes 1". Hds. disproportionately large (2 to 3" 

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



78. GNAPHA^LIUM, L. Cudweed. Everlasting. (Gr. yvdcjiaXov, 

 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 

 Lv.s. alternate, entire. 



* Heads in terminal corymbous clusters ,. . ..Nos, 1 — 8 



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



1 G. dec6rrens Ives. Iajs. decurrent, linear-lanceolate, very acute, naked above, 

 white and woolly beneath, Jls. in dense, roundish, terminal clusters. — 11 A stout 

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

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



