22 KEY TO NATURAL ORDERS. 
Division Ill. ApeTaLous: Corolla none; the floral pgegni ten being in 
a single series een) or sometimes wanting altogether. 
A. FLOWERS NOT IN AMENTS OR CATKIN-LIKE HEADS. 
1, in each cell of the ovary or fruit. 
Calyx with its tube coherent with the 6-celled PAGE. 
ovary. ARISTOLOCHIACER, 268 
Calyx free from the 
Pod a < Tele, serie 3 or mo 
ilugo, $0.5 oH ea” 56 
Pod or rieny 1-celled and sintiplek Ran 26 
2. Seeds only 1-2 in each cell of the ovary ie al 
Pistils more than one to the flower, and separate 
from each other. 
Calyx present and petal-like. Stamens on 
the recepta RANUNCULACER, 26 
Calyx prese’ a “the stamens inserted on it. 
“Leaves with stipules. Rosacea, 112 
Pistil only 1, Fis or formed of two or more, 
with their es united. 
Styles 10. et a 10-seeded berry. PHYTOLACCACEH, 270 
poe or stigmas 2-3. - 
ao Mise sheathing stipules and entire 
PoLYGONACES, 278 
ena ik separate stipules and com- 
pine or aan leaves, Urricaceg, 291 
Herbs with milky juice: stipules Ts 
ous or none, an often. fo: 
Fruit Poa into 2— z 2-valved ae EUPHORBIACER, 287 
Herbs without stipules, 
Without scaly outa Flowers small 
and greenish. CHENOPODIACES, 270 
With sealy bracts around and among 
the flowers. AMARANTACER, 275 
Shrubs or trees, with opposite leaves. 
Fruit a pair of keys. ACERACEX, 89 
Shrubs or trees, with alternate leaves 
and Seine stipules. 
on the throat of the calyx, 
iiseica wi ith its lobes. RHAMNACES, 85 
Stamens on the bottom of the calyx. Urricace, 291 
Style 1; stigma 2-lobed. Fruit a key. pansie 
: OLEACER, 264 
ene or _— stigma 1, and sim: 
alyx of 6 petal- -like colored aa: sta- 
nens 9-12: anthers opening by valves. 
URACER, 285 
é@ same number, 
erg moncecious or dicecious. osiaeee (291 
u 
Aromatic shrubs or trees. 
Calyx in the steals aware of 3- 5green- 
soba sepals: stamens the 
