Some plants in east and southeast Texas are intermediate between the two 

 varieties. 



2. Rudbeckia fulgida Ait. var. palustris (Eggert) Perdue. 



Stoloniferous perennial, most of the leafy tufts arising at the ends of the stolons; 

 herbage nearly glabrous to hirsute or strigose; basal leaves elliptical to ovate or 

 orbicular; stem leaves lanceolate to ovate-lanceolate, gradually reduced upward, 

 the uppermost bracteiform; pales apically ciliate; rays mostly 15-30 mm. long; 

 style branches short and blunt; achenes equally 4-faceted, facets flat or bulging. 

 R. Coryi Shinners. 



On wet ledges, in wet and swampy meadows usually fed by seepage, and 

 along streams, in Okla. (Arbuckle Mts.) and in e. and n.-cen. Tex., to Edwards 

 Plateau, summer; Mo., Ark., Okla and Tex.; the entire species widely distributed 

 in e. U.S. 



3. Rudbeckia subtomentosa Pursh. 



Perennial from a stout woody rhizome; stem 6-20 dm. tall, glabrous below, 

 densely pubescent above with short usually spreading hairs; leaves firm, petiolate, 

 densely pubescent with short loosely spreading hairs, ovate to sometimes elliptic- 

 lanceolate, serrate, some of the larger ones deeply trilobed; heads several; disk 

 brownish or dark-purple, 8-16 mm. wide; involucral bracts narrow, spreading 

 or reflexed, subequal, green, more or less canescent-strigose; rays usually 12 to 20, 

 yellow, 2-4 cm. long; receptacle bracts obtuse to acutish, canescent near tip with 

 short viscidulous white hairs; style appendages short and blunt; achenes quad- 

 rangular; pappus a minute crown. 



In low wet meadows and prairies, thickets and on stream banks, in e. Okla. 

 {Waterfall) , reported from Tex., July-Oct.; Wise, la. and Kan., s. to La. and (?) 

 Tex. 



4. Rudbeckia laciniata L. Cutleaf coneflower. Fig. 762. 



Plants 6-15 dm. tall, cinereous-pubescent, branched above; leaves petioled, 

 some or all of the lower ones 3-lobed or 3-parted, the terminal lobe elliptic to 

 lanceolate, acuminate, serrate, the lateral lobes smaller and narrower, the upper 

 stem leaves mostly undivided; heads numerous; phyllaries linear or nearly so, 

 acuminate; pales apically canescent; rays several, yellow, 2-3 cm. long. 



In wet soil along boggy streams and sloughs and about lakes, in wet thickets 

 and swampy or marshy areas, in n.e. Okla. {Waterfall), e. Tex., N.M. (wide- 

 spread) and Ariz. (Apache, Navajo and Coconino, s. to Cochise and Pima cos.), 

 summer-fall; Me. to Sask. and Ida., s. to Fla., Tex., N.M. and Ariz. 



5. Rudbeckia maxima Nutt. 



Plants 1-3 m. tall, smooth, glaucous; leaf blades unlobed, ovate to broadly 

 ovate or oblong, 6-20 cm. long, mostly obtuse, undulate to repand-denticulate 

 or entire, the upper sessile and partly clasping; heads large; phyllaries linear 

 or linear-lanceolate, acute, short; rays several, 15-40 mm. long; disks 25-60 mm. 

 long, oblong usually; pales abruptly short-pointed, apically pubescent; achenes 

 6-8 mm. long; pappus of small teeth. 



Moist open places, especially in wet swales and marshy areas, in Okla. (Mc- 

 Curtain and Choctaw cos.) and in e. Tex., spring-summer; Ark., Okla., La. and 

 Tex. 



28. Dracopis Cass. 



A monotypic genus, closely related to the Ratibida-Rudbeckia alliance. 

 1. Dracopis amplexicaulis (Vahl) Cass. 



Annual herb 3-7 dm. tall (rarely to 1.2 m.), usually branched above; leaves 



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