12 
Artemisia Absinthium, L. (Plate CXXXVI. K.L,M.) Akene not 
~ flattened, obovate, smooth ; pappus none. 
Seedlings small. Cotyledons closely sessile, 2 mm, long by 
I mm. wide. First two leaves linear-oblong, thickish, entire. 
The third. and frequently the fourth tridentate, the succeeding 
coarsely toothed, finally compound. These seedlings may be dis- 
tinguished from those of Achillea by the second and third leaves 
‘being oblong, entire; and from Chrysanthemum by the third and 
fourth leaves being tridentate. 
Fleliopsis helianthoides (L.) B.S. P. (Plate CXX XVII. L-O.) Akene 
“~~ without pappus, 3 or 4 angled [Triangular in the ray (Syn. 
F. of N. A.)]. Embryo only slightly flattened. 
Seedling of medium size. Cotyledons bent at the union of the 
blade and petiole, blade nearly orbicular, petioles as long as their 
blade. Leaves opposite, the first pair ovate-lanceolate. They 
and the succeeding minutely hairy, scabrous above, smooth below ; 
the later pairs ovate, somewhat toothed. The stems of seedlings 
have two pubescent lines running from the axil of each leaf to the 
next node above. The lines like the pairs of leaves decussate, 
those of any internode being half way round the stem from the 
lines of the internode below or above. The plant produced a few 
flowers during the first year’s growth. 
Helianthus divaricatus, L. (Plate CXXXVII. E.F.G.) Seedlings 
“of this species differ very much in appearance from those of 
the common sunflower (17. azuuus). They are slightly hairy, 
small and slow of growth. The akene is top-shaped, smooth. 
Hypocotyl of embryo short and narrower than the cotyledons. 
Seedlings with short petioled cotyledons. These are ovate and 
thick. The first internode elongates. First pair of leaves elliptical, 
sessile, ciliate, veiny. The seedlings of this plant differ from those 
of //eliopsis in the shape of the cotyledons, length of their peti- 
oles, and in having the stem uniformly hairy instead of hairy in 
lines as is so conspicuously the case in Heliopsis. 
Coreopsis discoidea, Torr. and Gray. (Plate CXXXVII. H-K.) 
Akene much flattened with 2, 3 or 4 upwardly barbed awns at 
the summit, somewhat hairy; embryo much flattened; coty- 
ledons oblong, twice as long as broad, narrowed rather ab- 
ruptly at the base into the short slender hypocotyl. 
