BIL 7 y M( ) R E 8 O TA NIC A L S TUDIES 



15 



Dr. A. W. Chapman and was described and distributed by him as R. heliopsidis, 

 a species which differs widely from the one under discussion, especially in the 

 smaller heads, the reflexed corolla lobes and short, blunt and pubescent-tipped 

 chaff of the receptacle. The proposed species is possibly best contrasted with 

 R. speciosa Wender, 13 from which it differs in the cordate or truncate radical 

 leaves, the slender petiolate, shorter, broader and more entire cauline leaves and 

 the smaller, more abruptly pointed scales without erose borders. 



The type material is preserved in the Chapman Herbarium at Biltmore. 



Mountains of Georgia (Dr. A. W. Chapman, no locality; Dr. T. P. Cleave- 

 land, Dalton, Ga.) and Alabama (Dr. G. Vasey, 1878). 



Rudbeckia sullivanti n. sp. 



A perennial herb ^dm^m or more tall: stem striate, hispid, 

 branched near the top: radical leaves i.5-4 dm long including the 

 petioles, 5cm_ I dm broad, the blades one^-half to one-third the length 

 of the slender petioles ; they are oval or broadly ovate-lanceolate, 

 acute or acuminate at the apex, either narrowed, rounded, truncate 

 or subcordate at the base, prominently 5-nerved, the borders 

 coarsely and irregularly serrate or serrate - dentate, more or less 

 rough-hairy, especially on the upper surface : lower cauline leaves 

 ovate-lanceolate, acuminate, narrowed at the base and prolonged 

 into winged petioles 4-7 cm long, the blades io-i4 cm long, 4-8°™ 

 wide, prominently 3-nerved, more or less rough-hairy, particularly 

 on the upper surface, the margins coarsely and irregularly serrate 

 or serrate-dentate, the narrow point entire or nearly so : upper 

 cauline leaves reduced in size, narrower and shorter petioled, 

 the uppermost subsessile and entire : peduncles i-3 dm long, 

 striate, rough-pubescent or hispid : involucres imbricated, the 

 bracts 8-i2 mm long, 2-3""" wide, the margins hairy: rays 10-15 

 or more, 2-4 cnl long, 3-6 mm wide, 2-3-toothed at the apex, 

 pubescent on. the lower surface : disks hemispherical or ovoid, 

 i2-i8 mm wide, io-i5 mm high, dark or reddish purple : chaff of 

 the receptacle 5. 5-6. 5 mm long, 1.5— 2 mm broad, acute at the erose 

 apex which, on the outermost scales, is sparsely ciliate : florets 

 6-5-7-5 mm high? the corolla lobes erect : achenes 3-4 mm long, with 

 minute coroniform pappus toothed at the angles : style tips blunt. 



Rudbeckia sullivanti represents a part of the material described by Torrey & 

 Gray in the Flora of North America, I.e., and by Dr. Gray in the Synoptical 

 Flora, 1. c, under R. speciosa, a species to which it is closely related, but from 



!3 Ind. Sem. Hort. Marb., 1828. 



