16 
The first leaf is strikingly different from the cotyledons. It is 
petioled, the petiole wing-margined, nearly or quite as long as the 
blade. Blade orbicular, entire, erect, roughish. The second leaf 
petioled like the first, the blade broadly ovate, sinuate-toothed, 
subcordate, pinnately veined. The third leaf toothed along the 
margined petiole, and the succeeding leaves becoming more and 
more runcinate. The tap-root is branched, it and its branches 
become fleshy-thickened during the first year’s growth. The 
plant does not blossom during its first year’s growth. It is strictly 
biennial. 
Abbreviations Used in the Plates. 
c. cotyledons. r2.__ branches of tap-root. 
h. hypocotyl. pl. plumule. 
rl, tap-root. p- pappus. oh 
L, 12, 13, etc., first, second, third, etc., leaves. I prefer to call the first leaf above the 
cotyledons the “ first leaf” and let the cotyledons retain their special name. 
Plate CXXXIVv. : 
Eupatorium perfoliatum, L. 
A. Seedling from which the cotyledons have fallen (x 2). B. Younger seedling 
with cotyledons (x 2). C, Fruit (x 10). D, Embryo removed from coats (x 10). 
Solidago serotina, Ait. : 
E. Seedling (x 2) with cotyledons and first three leaves developed. _F. Saine still 
more developed (nat. size). G. Akene (x 10) with pappus. H. Vert. sect. of 
same (Xx IO). 
Sericocarpus asteroides (L.) B.S. P. 
I. Akene (x 10) with pappus. K. Vert. sect. of same (x 10). L. Seedling with 
first three leaves developed (x 2). Te 
Aster Nove-Anglia, L. var. roseus, Gray. 
M. Akene (x 5). N. Vert. sect. of same. O. Seedling with first two leaves 
(x 2). P. Same older (x 2). 
Lnula Helenium, 1. 
R. Akene (x 10). S. Seedling (x 2). T. and U. Same in later stages T. (x 1%), 
U. (nat. size). 
Flelenium autumnazle, 1. 
V. Akene (x Io) with chaffy pappus p. W. Seedling (x 2). X. Same older 
(x 2). 
Plate CXXXVWV. 
Ambrosia trifida, 1. 
A. The nut-like fruit (x 4). B. The akene with involucre removed. C. The seed 
with the ovary coats removed. D, The embryo. E. Seedlings with ac meee a 
fully developed. F. An older seedling. E. and. F nat. i . 
