Helianthus.] COMPOSITE. , 31 j 



28. RUDBECKIA. Cass. Linn, (inpartem.) 



Achenium pappo coroniformi calloso crassoque coronatum, sectione transversa quadrata, 

 disco epigyno magno, areola lateral!. Corolla disci infundibuliformis, dentibus erectis; 

 radii absque ullis genitalium vestigiis. AjithercB inclus®. Stylus disci ramis cono brevissimo 

 terminatis. — Herbse hispido-scahrce, perejines, ramis oppositis; foliis alternis, integris vel pin- 

 natifidis; capitulis terminalihus solitariis, radio lutco, disco fusco-violacco ; rachide conica ; 

 m\o\\\ms patentibus, circiter biseriallbus. Less. 



1. R> laciniata; elata, foliis inferioribus pinnatis segmentis lariceolatis incisis summis 

 ovatis, pappo crenato, caule glabro. — Schrad. — Willd. Sp. PL v, B, p, 2246. Mich, Am, v. 



2. p, 144. Ptirsh, FL Am, v, 2. p. 575. Elliott, Carol, v. 2. p. 451. 



Hab. Canada. Pursk. Lady Dalhousie. Mrs. Sheppard. From Lake Huron, {Dr. Todd,) to the Red 

 River. Douglas. 



2, R. columnaris; setis appressis hispida, foliis profunde pinnatlfidis segmentis lanceolatis 

 sublaciniatis, receptaculo elongato cylindraceo, pappo marginato brevissimo, paleis punctis 

 duobus nigris. — Nutt. Gen. Am. v. 2. p. 178. Bot, Mag. t. 1601, 



Hab. On dry undulating- grounds of the Saskatchawan and Red Rivers, abuudaut Douglas. Drummond. 



29. CALLIOPSIS. Reichenb. 



Achenium obcompressum, omnino calvum, intus curvatum, apice truncatum, anguste 

 bialatum, disco epigyno minuto, alis concoloribus integerrimis. Stylus disci ramis truncatis 

 apiceque solo penicillatis. — Herbse Boreali-Americancc, glahrce; foliis magis mimisve sectis ; 

 capitulis geminis vel corymbosis, radio luteo basi macula atro-purpurea notato vel roseo; 

 involucris Mserialibusy serie interiori gamophylla, exteriori squarrosa. Less. 



1. C, Atkinsoniana ; foliis glabcrrimis, radicalibus bipinnatifidis, caulinis pinnatis laciniis 

 linearibus spathulatis, flosculis radii basi sa?pius maculatis irregulariter trilobis, radice 



r 



perenni. — Coreopsis Atkinsoniana. (Dougl.) Lindl, in Bot. Beg, t 1376. 



Hab. Shores of the Columbia and Meuzies' Island. Douglas. Dr. Scouler. —Distinct from Calliopsis 

 { Cor eopsiSy Nutt.) tinctoriay according- to Mr. Lindley, in its perennial root, taller more branched stems, 

 and less strongly blotched flowers. The differences are not distinguishable in my native dried specimens. 



3. CoREOPSiDE^. Acheniis ecorticatis, erostribus, slatem nonnullis pappo nee autem coroni- 

 formi coroTuttis, capitulis heterogamis, Jloribus neutris nniserialibns in ambitu. Less. 



30. COREOPSIS. Linn. 



Achenium conforme, aristis binis brevibus coronatum, plano-obcompressum, bialatum, 

 Herbae autrarius Frutices Americw indigeni; foliis integris vel vai'ie sectis ramisque oppositis; 

 capitulis terminalihus, radio plerumque luteo; involucris pohjphyllls, biserialihus ; rachide 



plana. Less, 



1. C, lanceolata; foliis oppositis lanceolato-linearibus integerrimis cillatis inferioribus 

 petiolatis, acheniis orbiculatis scabris alatis apice bidentatis, caule glabro. — Linn. — Mich, 

 Am, V. 2, p. 137. Pursh, FL Am. v, 2, p, 567. Elliott^ Carol, v. 2. p. 433. ' 



Hab. North side of Lake Superior. {Torrey, in Heih. nostr.') Lake Huron. Dr. Todd. 



