APPENDIX III. 83 
The number after the plant refers to the family to which it 
belongs. A list of the families is given at the end of the key 
with a short synopsis of each to enable the student to become 
acquainted with the characteristics of representative groups of 
plants. 
KEY. 
Plants growing in deep or shallow water . . HypropuyTss. A 
Plants growing in bogs, swamps, or marshes . «6 B 
Plants growing in medium meres con- 
ditions (uplands) ee (aie. 8 MersopuyteEs. Cc 
Plants growing in very as sandy or ooky 
places. . . . ome XEROPHYTES. D 
A. 
Heres. 
Fils. white, 
small (1 in. or less), reg. 
3 m.; st. 6; lvs. rad., oblong heart- 
shape. . . . . . . . . « Water Plantain. 2 
(Alisma plantago) 
3 m.; st. many; lvs. rad.,arrowform, Arrow Leaf. 2 
(Sagittaria variabilis) 
5 m.; st. many; lvs. finely divided, 
flaccid when taken from water . . Water Crowfoot. 16 
(Batrachium tricophyllum) 
rigid ge ee ‘ sf (B. divaricatum) 
5m.; st.5; p.1; lvs.3foliate . . Buck Bean. 35 
(Menyanthes trifoliata) 
large (3 in. or more), reg., many- 
petaled. 
sepals aia ee fis. pics) odor- 
ous ... - Water Lily. 15 
(Castalia odorata) 
sepals greenish; fls. barelyodorous, —_(C. tuberosa) 
Fils. yellow, 
small, reg. 
5 m.; st.many; p. many; lvs. finely 
parted . . .. . . . . . Water Crowfoot. 16 
(Ranunculus delphinifolius) 
