r 



V 



324 COMPOSITE. [Artemisia. 



11. A. glomerata; densissime caespitosa ubique sericeo-villosissiina, ramis brevibus arete 

 foliatisj foliis brevibus 3-5-fido-palmatis laciniis lanceolatis brevi-acuminatis inferioribus 

 sessilibus caulinis late petiolatis, floribus capitatis, receptaculo nudo. — Lessing^ in LiiiTKea v, 

 6. p, 212, HooL et Arn, in Bot of Beech, Voy, v. \, p, 125. 



Hab. Bay of St. Lawrence. Chamisso. Kotzebue's Sound. Messrs. Lay and Collie. 



12. A. ccBspitosa {Bess.); caladiidibusracemoso-spicatisglomeratisfvlobosisjpedunculisaplce 

 lanatis, flosculis siiperne pilosulis, periclinii squamis fuscis scariosis dorso sublanatis, foliis 

 subsericeis radicalibus longe petiolatis caulinisque inferioribus pinnatisectis superioribus 

 trifidis laciniis illorum 3-5-fidis subincisis, superiorum indivisis linearibus obtusis, 



Planta Sibirica habet flosculos pilosulos, periclinii squamas ovatas acutas, et est pedalis. Altera est a 

 littoribus Arcticis Americse, cui flosculi 8 omnino nudis. 



Hab. Arctic sea-shore. Dr. Richardson. 



13. A, Tilesii; herbacea, calatbidibus racemosis globosis subnutantibus in caule simpli- 

 cissinio, flosculis nudis, periclinii arachnoideo-tomentosi squamis lateribus scariosis, foliis 

 subtus albo-tomcntosis pinnatifidis laciniis lanceolatis subdentatis. — Ledeh, Mem, de CAcad. 

 Imp, de Sc, v. 5, p. 568, Bess, Monogr, Art, ined. cum ic, Lessing^ in LinncBay v, 6. p. 

 214. Hook, et Arn, in Bot, of Beech, Voy, v, 1. p. 115, et 127. — Ex littoribus arcticis est 

 var. g. arctica [Bess. Monogr, ined, cum ic.) foliorum laciniis integerrimis ma'ns distantibus 

 obtusis brevibus, pericliniis flosculisque pallidis. 



Hab. Unalaschka. Chamisso^ in Herb, nostr. Kotzebue's Sound. Messrs. Lay and Collie. Arctic Sea 

 shore, between the Mackenzie and Coppermine Rivers. Dr. Michardson. 



14. A, Michauxiana {Bess,) ; herbacea, calatbidibus racemosis globosis cernuis in caule 

 simplicissimo, flosculis nudis, periclinii glabri squamis lateribus scariosis nitidis, foliis subtus 

 albo-tomentosis pinnatifidis laciniis inferioribus inciso-dentatis superioribus floralibusque 

 lineari-lanceolatis. Bess, Monogr, Art, ined, cum ic, 



Hab. Rocky Mountains. Douglas. Columbia. Douglas, in Herh, Lindl. 



15. A, Prescottiana {Bess,); suffruticosa, calatbidibus spicatis globosis suberectis in 

 ramis simplicissimis, flosculis nudis, periclinii squamis margine scariosis nitidis, foliis subtus 

 incanis margine revolutis pinnatifidis 3-fidisve, laciniis divergentibus foliisque summis 

 lineari-filiformibus. Bess, Monogr, Art, ined, cum ic, 



Hab. North-West America. Douglas, in Herb. Lindl. 



16. A. Chamissoniana (Bess,); herbacea, calatbidibus magnis racemosis globosis cernuis 

 in caule simplicissimo, flosculis praecipue basi pedunculisque apice pilosis, foliis subglabris 

 inferioribus 2-pinnatifidis petiolatis, superioribus pinnatifidis sessilibus, laciniis lineari-lan- 

 ceolatis subinciso-dentatis. Bess, Monogr, Art, ined cum ic—A, arctica. Lessing, in LinntBa, 

 V, 6. />, 2 1 3. {fide specim, in Herb, Hook. ) Hook, et Arn, in Bot of Beech, Voy, v, 1, p, ] 25. 



Hujus var. 0. saxatilis (Bess, in 1. c.) est a Rocky Mountains, in qiia periclinii squama sunt orata; 

 margme sphacelatie.-A arctica. (Lessing in Liun^a, 1. c.) est mea var s. Koraginskiana, a D. Mertensio 

 lecta, penchnn squamis fuscis sphacelatis obovatis, margine latissimo membranaceo crenato-dentato. 

 Varietates miro modo distinguuntur squamis fere solis periclinii. 



