52 
ACMELLA. 
2. A. nuttaliana Raf. A. occidentalis 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 fiemis t finer vis 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 iiniflore , 
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.lmd 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. par vi f oli a Raf. Stem smooth sulcate, 
leaves crowded at the base, small ovate acute 
serrate, flower ped uncled, 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 Acmdla , altho’ 
the habit is very different from the others, near- 
