ee 
ei 
~o Plants not as described a 
»Z Stamens 6-9 (frequent- u 
ly 5 in Polygonum); 
perianth segments white, ae 
ay pink or yellow, or if . 
green, in two dissim- xg 
\ilar series Polygonacese (P +4 
48 Stamens 1-5; perianth 
segments green, ina 
2 single series ( a- 
O-< single sepal in Coris- 
permum and Monolepis) 
ta atte all. lata: Wi 
20 Flowers subtended 
jand enlosed by chaffy 
as scarious usually : 
Y' \ prickly bracts; pere 3 
ianth scarious Anaranthaceae (p,4 
30 Flowers not so sub- : 
tended, the perianth 
aud reen and rather 4 
o leshy Chenopodiacese| J 
jlbPetals present, the perianth consisting of a clearly , 
defined outer whorl, the calyx (its subdivisions called | “ 
W sepals) anufine corolle (its subdivisions called petals). an i”ner whorl} 
The former is prevailingly green and herbaceous, the 
latter colored and of e different texture. The members 
A of each whorl may be entirely distinct from each other 
and from the contrasting whorl, or may be more or less 
united with each other, with the contrasting whorlor 3 
with the ovary and stamens. In some genera of 
Umbelliferae the sepals are wanting, or minute 
44aPetals distinct, not unitec for if so, only at the 
J very base); ie—-tets-—eece one can usually be detached with- : 
out disturding the otnercy 4 
4 Sqa.Aquatic plants, vholly or partly submerged or float- 
ine, sometimes crowing in swemvoy cround which may later 
py J 3 Y Oo a Oo vw 
o\ become dadryx 
i, Leaves oval, 6-8 cm. or 20-40 cn. long, 
very smooth, 
Nymphaeaceae 
6-10 in a whori_at each node Haloracidaceae 
see Sra. Caleg. La 
into linear or hair-like 3 
also Utricularie) 3 
Wp "8 Leaves vinnetely cissectec into 15-20 " 
l2 linear segments Haloragidaceae ps 
RB j 
@ Leaves several times 2-(or less often j 
IZ 2-) forkedy Ranunculaceae 1.4 
