400 



ARTEMISIA 



387. Artemisia vulgaris. 

 (XH) 



DD. Lvs. white on 1 side only or green throughout. 

 11. Abrotanum, Linn. SOUTHERNWOOD. OLD MAN. 

 Shrubby, 3-5 ft., green and glabrous, the st. much 

 branched and rather strict: Ivs. 1-3- 

 pinnately divided, the divisions fine- 

 filiform : panicle loose, with yellowish 

 white heads. Eu. Soutnernwood 

 is grown for its pleasant-scented 

 foliage; and it sometimes escapes 

 into waste places. See Southern- 

 wood. 



12. pontica, Linn. ROMAN WORM- 

 WOOD. Fig. 386. Shrubby, erect, 

 1-4 ft.: Ivs. canescent below, pin- 

 natisect, the lobes linear: panicle 

 open and long, with small, globular, 

 nodding, whitish yellow heads. Eu. 

 Roman wormwood is used for the 

 same purposes as A. Absinthium, 

 and is more agreeable. A source 

 of absinthe. 



13. vulgaris, Linn. MUG- 

 WORT. Fig. 387. Herb, erect, 

 paniculately branched, the sts. 

 often purplish: Ivs. white-cot- 

 tony beneath but soon green 

 above, 2-pinnately cleft, with 

 lanceolate lobes; upper Ivs. 

 sometimes linear: heads many, 

 oblong, yellowish. Eu. and N. 

 N. Amer., and naturalized in 

 eastern states. A white-fld. 

 form has been sold as A. lacti- 

 fldra. Fig. 388. It is a beauti- 

 ful plant with fragrant foliage. G. 29:409. Mug- 

 wort is grown for the ornament of its foliage. There 

 are variegated-lyd. and golden-lvd. varieties. It was 

 once a domestic remedy. 

 Variable. 



14. ludoviciana, Nutt. 

 WESTERN MUOWORT. 

 WHITE SAGE. Erect or 

 ascending herb, 2-3 ft., 

 white-tomentose or Ivs. be- 

 coming greenish above: Ivs. 

 linear to oblong, the lower 

 ones toothed or parted, the 

 upper ones entire: heads 

 small, bell-shaped, panicu- 

 late. Plains and banks, W. 

 Intro. 1891. 



AA. Heads with perfect "*' i 

 fls. throughout: re- 

 ceptacle not hairy. 



15. arbuscula, Nutt. 

 SAGE BRUSH. Shrubby, 

 a foot or less high: 

 Ivs. short, wedge-shaped, 3- 

 lobed, the lobes obovate and 

 often 2-lobed, canescent : 

 panicle simple and strict, 

 often spike-like, the 5-9-fld. 

 heads erect. Plains and 

 mts., Colo, and Wyo., N. W. 



16. tridentata.Nutt. SAGE 

 BRUSH. Shrubby, reaching 

 height of 12 ft. although 

 often only a foot high, 

 branchy, canescent: Ivs. 

 wedge-shaped, 3-7-toothed 

 or lobed, truncate at the 

 summit, the uppermost ones 

 narrower: heads 5-8-fld. 



Plains, W. Intro. 1881. 388. Artemisia lactiflora. No. 13. 



ARTICHOKE 



17. sacrorum, Ledeb. Annual or biennial, shrubby 

 below: Ivs. long-petioled, ovate, pinnatisect and the 

 segms. again pectinate, hoary or white-pubescent 

 the rachis winged: fls. 15-20 in the head, the heads 

 nodding and in separate slender racemes. S. Russia, 

 Siberia, etc. Var. viride, Hort., with green foliage, is 

 the attractive SUMMER FIR recently intro., grown as an 

 annual for its neat pyramidal form (3-5 ft.) and much 

 dissected rich green foliage. 



A. Baiimgartenii, Bess. Compact, shrub-like, with small Ivs. 

 and yellow fls. standing erect above the Ivs. S. Eu. A. lanAta 

 Willd (A. pedemontana, Balbis). Low cespitose plant with finely 

 cut, silvery foliage for which it is chiefly grown. Spain. 



N. TAYLOR.! 



389. Globe artichoke. 



ARTHROPODIUM (Greek, joint and foot, alluding 

 to jointed pedicels). Liliacex. Herbaceous perennials, 

 allied to Anthericum, grown in the open in the South 

 and otherwise in greenhouses. 



Tufted herbs 1-3 ft. high, with fibrous fleshy roots: 

 lys. linear or lanceolate, crowded at base of st.: scape 

 simple or branched; fls. white or violet, in racemes or 

 panicles, on pedicels jointed at the middle; perianth 

 persistent, the segms. 6 and distinct and 3-nerved; 

 stamens 6, shorter than perianth: fr. a subglobose caps., 

 3-valved. About 10 species in Austral., New Zeal., etc. 

 Cult, and prop, as for Anthericum, requiring no special 

 treatment. 



cirrhatum, R. Br. Glabrous, to 3 ft.: Ivs. numerous, 

 deep green, 2 ft. or less long: scape stout, naked, bear- 

 ing a much-branched panicle often 1 ft. long; fls. 

 white, star-shaped, 1 in. or less in diam., the segms. 

 oblong-lanceolate, acuminate; filaments bearing 2 ten- 

 dril-like appendages (whence the name). New Zeal. 

 B.M. 2350. Reported in S. Calif. L. H. B. 



ARTHROTAXIS: Athrotaxus. 



ARTICHOKE (Cynara Scolymus, Linn.). Com- 

 pdsitx. The artichoke (or the Globe artichoke, to 

 distinguish it from the Jerusalem artichoke) is a strong 

 thistle-like plant (Fig. 389), grown for the edible flower- 

 heads (Fig. 390). It is native in southern Europe and 

 northern Africa, and is not hardy in the northernmost 

 parts of the United States. It is perennial, but the 

 plantation should be renewed every two or three years. 

 See Cynara. 



The artichoke is propagated by seed or by suckers. 

 The latter is the preferable method, for a good strain or 

 variety may thus be perpetuated. The buds or shoots 

 are detached from the old crown in spring before 

 growth begins. Seeds produce bearing plants the fol- 

 lowing year, although heads may be secured the same 

 autumn if the season is long and if the seeds are 

 started early under glass. 



The soft fleshy receptacle of the flower-head and 

 the thickened base of the scales (or involucre bracts) 



