72 ROBINSON. 
ape aetaeee more than two- 
Leaves OT ae acuminate, 
mostly 4-6 c ; 
Leaves serrate, aiaut ‘half as wide as long. 
j. Heads 80-100-flowered; pubescence of stem | 
gland-tipped and viscid..............-- 70. E. probum. 
h. Stems sparingly to pipdas puberulen 
k. Heads panties? inflorescence ma ‘ovoid 

l. Heads ee at = tips of the diver- 
gent branches of the panicle; aa Meme 
Stem covered with a dark an ense 
gland-tipped puberulence; leaves cren- 
ate-serrate; teeth about ten on each side. ; 
ibe E. choricephaloides. 
Stem covered with white or gray cada 
scarcely or not at all pee 6 4S pa wi 
ese, leaves remotely cuspidate-dentate; . 
eth 4-6 on each side; «. (ioe Gee 72. E. flerile. 
m. Pongo penged rom a point 5-10 mm. 
above the base. 
a 8 — —— — - gla — 
eaves sharply we ee —19 on 
Ob MIE 6 site: bbe bene 72a E Dombeyanum. 
Petiole 10-25 mm. long; achenes- oom 

mucronate-serrate; teeth 5-12 on nae ' 
MAR: 2. psc eens i yn eae 64. E. tambillense. 
k. apes suse to be bight re! ines or 
topped compound corymbs r (when 
few) Ugur ey mus on chiefly pp a or 
n. ee .- eee hes ost part conspicuously 
onic soe at the base; internodes ea EB Sodiroi. 
ovate, finely crenate-serra 
5-7 on each side; slender-stemmed oe scopulorum. 
ously branched shrub. ......-----> 
o. Leaves (at agg Sp! mature caning 
eae | em. 
p. Heads small, see m. high; keares 
ony a llowly 3 mm. highs 
stems nearly smooth but sight? ie 
d the summit; 
the hairs very Be r, eae mostly - B. Gilbertii 

