350 LXXV. COMPOSITE. GNAPHALIUM, 
what fleshy segments. Heads small. Outer scales ovate, inner scarious,ellip- 
tical. Aug. Sept. 
§ 2. Receptacle naked. Flowers all fertile. 
6. A. AproTrinum. Southernwood.—WSt. erect; lower lvs. bipinnate ; wpper ones 
capillary, pinnate ; invol. downy, hemispherical aA well known shrubby plant 
in gardens, about 3f high. Leaves alternate, much divided into very narrow, 
linear segments. Flowers numerous, nodding, yellow. Native of S. Europe. + 
7. A. Lupoviciana. Nutt. 
Herbaceous, canescently tomentose; dvs. lanceolate, lower incisely and 
remotely serrate or subpinnatifid, upper entire; ids. ovoid, subsessile, arranged 
in a simple, slender, leafy panicle—Lake and river shores, Mich. to Mo. W. 
to Oreg. Stem 2—5f high, simple or branched. Leaves quite variable in size, 
and also in pubescence, sometimes nearly smooth. Heads small and crowded. 
Aug. Sept. 
8. A. vuLGARIS. Common Artemisia or Mugwort. 
Lvs. tomentose beneath, cauline ones pinnatifid, segments lanceolate, 
acute, subdentate, floral ones entire, linear-lanceolate ; Ads. erect, ovoid, sub- 
sessile ; invol. tomentose.—2, Introduced from Europe and naturalized in fields, 
roadsides, banks of streams, &c., Vt. N. H. Stem 2—f high, branching 
into a panicle of spicate racemes. Leaves very variable, but never nearly so 
attenuated asin A. Canadensis. Heads few, purplish. 
9. A. BIENNIS. Willd. 
Erect, herbaceous, smooth; dvs. bipinnately parted, upper ones pinnatifid, 
all with linear, acute and mostly incised lobes; Ads. sessile, arranged in aclose, 
narrow, leafy panicle of short spikes.—Ohio to Mo. and the Saskatchawan. 
T. ¢ G Aug.—Oct. 
§ 3. Receptacle villous or hairy. Flowers all fertile. 
10. A. Agsintuium. Common Wormwood. 
Lvs. multifid, clothed with short, silky down, segments lanceolate; Ads. 
hemispherical, drooping ; receptacle hairy.—Naturalized in the mountainous dis- 
tricts of New England, growing among rubbish, rocks and by roadsides. Stems 
angular, branched, with erect racemes of nodding, yellow flowers. ‘The whole 
plant is proverbially bitter, and of powerful medicinal qualities as a tonic, 
stomachic, &c. } + 
11. A. Pontica. Roman Wormword.—Lvs. tomentose beneath, cauline ones 
bipinnate, leaflets sinear; Ads. roundish, stalked, nodding—Common in gar- 
dens, where it arises 3 or 4f, with simple branches and racemes of yellow flow- 
ers. Head with 24 flowers, those of the ray about 6. From Austria. + 
53. TANACETUM. 
Said to be a corruption of a @avarus, deathless ; for the durable flowers. 
Involucre hemispherical, imbricate, the scales all minute; recep- 
tacle convex, naked; pappus a slight, membranous border; achenia 
with a large, epigynous disk.—Lws. alternate, much dissected. F'ls, 
yellow. ’ 
T. vuLGéreE. Tansey—Lvs. pinnately divided, segments oblong-lanceolate, 
pinnatifid and incisely serrate; ids. fastigiate-corymbose.—2 Native of Europe, 
and naturalized in old fields and roadsides. Stems clustered, 2—3f high, 
branched above into a handsome corymb of yellow flowers. Aug.—The whole 
plant has a strong and aromatic smell and a very bitter taste. The seeds are 
movey A variety called double tansey occurs, with dense and crisped 
eaves. 
54. GNAPHALIUM. 
Gr. yvadaXov, cotton or wool; from the soft, cottony surface of the herbage. 
Heads discoid, heterogamous; involucre imbricate with searious, 
colored scales ; marginal flowers subulate, pistillate, in several rows; 
