314 COMPOSITtE. Lepachts. 



recurved teeth ; the proper tube none ; the stamens therefore inserted into the 

 very base of the corolla. Achenia of the ray 3-angled, hairy, abortive; of 

 the disk compressed, glabrous or ciliate, with a wing-like margin on one or 

 both sides, which is more or less produced into a tooth at the summit; the 

 areola at the base somewhat lateral. — Perennial usually branching strigose- 

 scabrous herbs (natives of North America, chiefly of the region between the 

 Mississippi and the Rocky Mountains) ; the striate-sulcate stems or branches 

 naked above, and terminated by single showy heads. Leaves alternate, pin- 

 nately parted or divided ; the divisions narrow, sometimes again pinnatifid. 

 Rays spreading or drooping, yellow, sometimes partly or entirely orange- 

 brown. Disk cylindrical, exhaling a fragrant anisate odor when bruised, the 

 apex of the chaff canescent; the corolla, anthers, and branches of the style 

 fuscous- 



De Candolle, who has by mistake given the year 1829, instead of 1819, as the date 

 of Rafinesque's memoir (which is however elsewhere correcdy cited), has thence 

 adopted Cassini's name of Obeliscaria, doubtless upon the supposition of its priority. 

 Cassini passed by Rafinesque's name, because, as he states, he could not ascertain 

 what plant that author had in view : the character is ceitainly not altogether correct ; 

 but Rafinesque mentioned Rudbeckia pinnata as the type of his genus. We feel 

 obliged, therefore, to follow Lessing, and retain the name of Lepachys for this genus ; 

 which, although well marked in habit and character, must be divided into as 

 many sections or subgenera as there are species. L. pinnata approaches neai-est to 

 the original Rudbeckia, viz : R. laciniata. 



§ 1. Achenia quadrangnlar-comincssed ; the inner margin very obscurely 

 winged, the summit obsoletcly and obtusely 2-toothed, naked: apjmidages 

 of the style lanceolate, acute, barbellatc-hisjnd. — Obeliscaria, Cass. (Le- 

 pachys, Raf.) 



1. L. 2nnnata: scabrous and pubescent with minute strigose hairs; leaves 

 pinnately divided ; the divisions 3-7, lanceolate, acute or acuminate at each 

 end, sparingly serrate-toothed or entire; the uppermost undivided ; disk oval- 

 oblong, much shorter than the ravs. — L. pinnatifida &c anguslifolia, Raf.! 

 I. c. "^Rudbeckia pinnata, Vent. ! liort. Cels. t. 71 ; Michx. ! fi. 2. jj. 144 ; 

 Smith, exot. bat. 1. t. 38; Bat. mag. t. 2310; Willd.! enum. 2. p. 921; 

 Pursh! fl. 2. p. 576. R. digit aiR,"Wi lid. .' spec. 3. p. 2247, excl. syn. 

 Moris. Sf Ait. R. tomentosa, ^Ell. ! sk. 2. p. 453, excl. syn. R. odorata & 

 cinerea, of the gardens. Obeliscaria pinnata, Cass, in diet. sci. nat. 46. p. 

 401 ; jDC. I prodr. 5. p. 558. 



Dry prairies and plains, from Western New York {Dr. Sartu-cll!) and 

 Pennsylvania {Muldcnberg .') Iowa! and Michigan! and throughout the 

 Western States to Louisiana ! the western part of Georgia {Baldwin ! El- 

 liott!) Alabama {Mr. Buckley!) and Middle Florida, Dr. Cltapman! June- 

 Sept. Plant 3-4 feet high. Divisions of the leaves varying from oblong- 

 lanceolate and coarsely toothed, to narrowly lanceolate-linear and entire; the 

 terminal & superior divisions largest, often confluent. Rays bright yellow, 

 li to 2i inches long, varying from 3 or 4 to 8 or 9 lines in breadth. Chaff 

 3-nerved ; the lateral nerves colored. Achenia when young exhibhing a 

 narrow indistinct wing on each margin, which is slightly produced beyond 

 the summit, so that the achenium is obscurely 2-toothed. 



§ 2. Achenia much compressed ; the inner margin evidently winged and 

 slightly ciliate ; the summit somewhat l-2-toothed, and crayoned loith an ob- 



