84 GENUS ARTEMISIA. 



30. A. INCOMPTA Nuttall, Trans. Am. Phil. Soc. ii, 7:400, 1841. — A. vulgaris discolor. A robust form with 

 broad segments to the leaves. (See diagnosis under A. michauxiana of this list.) 



31. A. INDICA CANADENSIS Bcsser; Hooker, Fl. Bor. Am. 1:323, 1833. — A. vulgaris typica, from description. 



32. A. INDICA MEXICANA Besser, Nouv. Mem. Soc. Nat. Mosc. 3:56, 1834. — A. vulgaris mexicana. 



33. A. KANSANA Britton, in Britten and Brown, 111. Fl. 3:466, 1S9S. — A form of ,4. vulgaris ivrighli equivalent 

 to A. carrulhi of this list. The type, which came from the plains of Lane County, Kansas {Hitchcock 302, NY), 

 is the common form in Kansas and western Missouri. There is little doubt that it is identical with carrulhi, 

 a name apparently overlooked by Britton. 



34. A. KENNEDYi Nelson, Proc. Biol. Soc. Wash. 18:175, 1905. — .4. vulgaris heterophylla. Type locaUty, 

 Verdi, Washoe County, Nevada. Well separated by its author from A. suksdorfi Piper, that is, from A. 

 vulgaris litoralis, but not compared with true heterophylla, which was assumed to be identical with suksdorfi. 

 Even if heterophylla were so identified, there are other names, notably hookeriana and douglasiana, which would 

 have precedence for this subspecies with broader gray involucres and more numerously flowered heads. (See 

 further under hookeriana of this list and in Hall, Univ. Calif. Publ. Bot. 3:218, 1907.) 



35. A. LEiBERGi Rydberg, N. Am. Fl. 34:267, 1916. — This is a variation of A. vulgaris lindleyana with 

 rather large heads and perhaps more nearly hemispheric involucres. The size of the heads is frequently 

 equaled on plants referred without hesitation to this variety and the shape of the involucres is scarcely if at 

 all different. The type specimen of leihergi came from Fish Hook Ferry, Oregon, in a region where lindleyana 

 is common, especially on stony stream-banks which are flooded at seasons of high water. 



36. A. LiNDHEiMERiANA Scheele, Linnaea, 22:163, 1849. — A variation of A. vulgaris mexicana approaching 

 A. v. ludoviciana; stems rigid and almost woody; involucre only about 2 mm. broad. Type locality, dry 

 streamway of the Cibolo River, 15 miles westerly from New Braunfels, Texas. 



37. A. LINDLEYANA Besser; Hooker, Fl. Bor. Am. 1:322, 1833. — .4. vulgaris lindleyana. 



38. A. LINDLEYANA BREVIFOLIA Besser, 1. c. — A. vidgaris lindleyana, a late form with short fascicled leaves. 



39. A. LINDLEYANA cORONOPUS Besser, 1. c. — A. vulgaris lindleyana with the leaves sinuately cleft. 



40. A. LINDLEYANA LEGITUL^ Besser, 1. c. — Typical A. vulgaris lindleyana. 



41. A. LINDLEYANA sUBDENTATA Bcsser, 1. c. — A. vulgaris lindleyana with leaves 2 to 5 cm. long, 2 to 4 mm. 

 wide, irregularly dentate. 



42. A. LONGiFOLiA Nuttall, Genera 2:142, 1818. — A. vulgaris longifolia. 



43. A. LUDOVICIANA Nuttall, Genera 2:143, 1818. — A. vulgaris ludoviciana. 



44. A. LUDOVICIANA DOUGLASIANA Eaton, in Watson, Bot. King. Expl. 183, 1871. — A. vidgaris douglasiana, 

 as to synonymy. 



45. A. LUDOVICIANA GNAPHALODEs Torrey and Gray, Fl. N. Am. 2:420, 1843. — Based upon A. gnaphalodes 

 Nuttall, here treated as A. vulgaris subsp. gnaphalodes. 



46. A. LUDOVICIANA INTEGRIFOLIA Nelson, First. Rep. Fl. Wyo. 138, 1896. — A. vidgaris longifolia. 



47. A. LUDOVICIANA LATIFOLIA Torrey and Gray, 1. c. — A. vulgaris gnaphalodes. Based upon A. purshiana 

 latifolia Besser. 



48. A. LUDOVICIANA LATiLOBA Nuttall, Trans. Am. Phil. Soc. ii, 7:400, 1841. — The type not seen and the 

 description indefinite. According to Rydberg it is the same as his A. platyphylla, here reduced to A. vulgaris 

 candicans. 



49. A. LUDOVICIANA sERRATA Torrey and Gray, 1. c. — Based upon A. serrata Nuttall, here reduced to 

 A. vulgaris serrata. 



50. A. MEXICANA Willdenow in Sprengel, Syst. 3:490, 1826. — A. vidgaris mexicana. 



51. A. MEXICANA BAKERi Nelson; Coult. and Nelson, Man. Rocky Mt. 569, 1909. — Based upon A. bakeri 

 Greene, which see. 



52. A. MEXICANA siLVicoLA Nelson, 1. c. — Based upon A. silvicola Osterhout, which see. 



53. A. MICHAUXIANA Besscr; Hooker, Fl. Bor. Am. 1 :324, 1833.— The oldest name for the group of forms 

 here assembled under A. vulgaris discolor, this varietal name selected because of its brevity and long usage 

 as a sp)ecies in most of the standard floras. This discolor group is exceedingly variable in habit, foliage, and 

 color, thus giving rise to several so-called species. Specimens representing these are indicated in the citations 

 under discolor. The three most divergent forms may be diagnosed as follows: 



Genuine discolor. Plant rather large, usually 3 to 5 dm. high, leaves mostly 4 to 8 cm. long, deeply 

 cleft into long attenuate segments, these mostly 1 to 4 mm. wide; inflorescence loose and broad. Quite 

 certainly the ecologic response to lower altitude and better soil conditions than those obtaining where 

 the next form grows. Found along rivers and creeks or in copses. Common at high altitudes in the 

 Sierra Nevada, but always in moist sandy places. 



A. michauxiana Besser. Plant low, 1 to 3 or sometimes 4 dm. high; leaves only 1 to 4 cm. long, 

 cleft into short lanceolate lobes, these 1 to 4 mm. wide; inflorescence rather compact, narrow, spike- 

 like. The common reduced form of high altitudes which has commonly passed as A. discolor. Type 

 locality. Rocky Mountains. Intermediate between this and true discolor, both as to foliage and inflores- 

 cence, are specimens from British Columbia, Macoun 14591, 11,693, and 76926 (NY), and many others. 



