OF NORTH AMERICA. 73 
an aHigat^r, and in fact they are covered above 
with hard and rough warts whence my name. 
9 0. Balduina bicolor Raf. nearly smooth, 
stem grooved n ked above uniliore, leaves scat- 
tered sessile narrow cuneate obtuse entire, scales 
of perianthe adpressed broadly ovate acute, 12 
white rays cuneate unequaly trifid— another sp. 
of the real G. Balduina , habit exactly similar, 
but flowers larger with white rays and yellow 
disk. B . uniflora which I have must now be 
called B. lutea , This was found by Leconte 
in Florida or Georgia and deemed a N. G. in 
Coll. herb, stem pedal, leaves uncial becoming 
less upwards, rays larger than in B . lutea y 
which has a leafy stem, the peduncle incrassate 
leaves broader adpressed and not crowded. 
921. Stevia ovata Raf. herbaceous pubes- 
cent, leaves opposite ovate acute serrate tri- 
nerve, corymb fastigiate, perianthe 4flore with 
4 segments linear oblong acute, pappus of 4 
short obtuse scales.— Texas and Arkanzas, col- 
lected by Walton, stem pedal, leaves small 
hardly uncial opposite subsessile, flowers yellow, 
florets tubular 4fid obtuse, stamens inclosed, 
seeds linear smooth compressed, crown or pap- 
pus or 4 very short obtuse scariose scales. 
Probably a subgenus Etetra by the disposition 
in 4 &c. All the N. Araer. sp. akin to Stevia 
appear to deviate as the 2 next Genera evince, 
even the Mexican sp. include 2 other G. the 
Mustelia of Sprengel with double pappus, and 
my Tomista for St. pedata with perianthe 
camp, pappus truncate. 
922. OTHAKE Raf difif. Stevia, perianthe 
turbinate subSflore, segments about 8 nervose, 
florets with slender tube, limb as long 5parted, 
anthers subsessile exerted, style elongate hispid, 
10 
