52 ACMELLA. 



2. A. NTJTTALIANA Raf. A. occidcntalis Nut- 

 al. Creeping, leaves ovate crenate petiolate 

 hardly trinerve, rays 5 to 8. Louisiana, peri- 

 anthe minute. The occidentalis of South 

 America has the seeds terete, 5 rays , leaves 

 large trinervate serrate, stem erect, 5 entire 

 rays : it was the Ant he mis trinervis of L. 



II. Sub. G. HELEPTA. Perianthe equal seg- 

 ments 10 to 12, rays 6 to 12, narrow, nearly en- 

 tire, seeds 4 gone not compressed, chaff setac- 

 eous Plants erect often simple and uniflore, 

 leaves petiolate trinervate, Perennial. 



3. A. NUDICAULIS Raf. stem sulcate smooth, 

 naked above uniflore, leaves ovate acuminate 

 serrate, base acute, rays 6 to 8 obtuse. In 

 Cumberland Mts. and East Kentucky with all 

 the following. Stem bipedal, leaves roughish 

 above, pale beneath, flower large. Seen alive. 



4. A. FLAVICAULIS Raf. Stem smooth striate 

 yellowish foliose, leaves ovate acute serrate, 

 flower nearly sessile, perianthe segments ovate 

 obtuse, rays 10 to 12 obliqualy retuse. Bipedal, 

 leaves not pale beneath, flower large. Seen 

 alive. 



5. A. PARVIFOLIA Raf. Stem smooth sulcate, 

 leaves crowded at the base, small ovate acute 

 serrate, flower peduncled, rays 6 to 8 retuse 

 notched. Pedal, small leaves and flower, seg- 

 ments of perianthe lanceolate acute as in near- 

 ly all. Seen alive. 



6. A. LANCEOLATA Raf. Stem rough sulcate fo- 

 liose, leaves lanceolate acuminate serrate, flow- 

 er subsessile, rays 6 to 8 obtuse. Over one foot, 

 leaves thin pale beneath, flower middle size with 

 broader rays. Seen alive. 



I have united these plants to Acmella, altho' 

 the habit is very different from the others, near- 



