/o0 Leaves in apposite pairsy . 
1% Sepals 5; stamens mostly l0y Caryophyllaceae (p, 
12 Sepals 4 or wanting; stamens 
F Jip never 10y 
14 Leaves sharply toothed; the 
,,, stems, at least, provided with : 
i3 stinging heirs; sepals 4y Urticaceae p.—) 
/4 Leaves entire or minutely 
, toothed, smooth and glabrous; 
sepals none (what may be taken 
for sepals are 4, or sometimes 
ig 5, glands which may have narrow 
white margins or two horn-like 
appendaces)§ ovary 3-celled, soon 
elevated upon a stalky Buphorbiaceae { p.-— 
/0 Leaves in whorls of 4-fy | 
}2 Ovary superior; stamens 5 Aizoaceae a 
|p Ovary inferior; stamens 4 (rerely 2) Ruoviaceae ip» —) 
& Sb, Leaves preveilingly alternate, some or 
qd }2, e211 basal in many casesy 
jo Ovary 3- Reaiernadeoar vith ovule in each 
ted stelk, pro- 
chamber, elevetec upon 
(ieee at maturity from a cup-shaped 
mj 
8 
involucre, the 4 glands of which are 
sepalelike with prong-like appendages; 7 
uppermost leaves whorlecy Juphorbiaceae |,—) j 
/O Plants not as describecy 
|& Leaves ternatvely compound; flowers 
Cioecious, the staminate consisting 
of several purple anthers pendulous 
upon hairelixe filernents, ae distill- 
Io¢ es au erect pis-~ a globose cluster of) 4 
te consisting of = : 
tils with attenuate styles». forming 
\ereped echenese at matority Thalictrum [ Ps) 
/4 Pistils mere then on2 in each 
12 flower, 
/@ Leaves kiéneyeshanec, ceevly 
spelimetely 6-S-lobes to the 
Gi ,.y( middle; stamens enlarged at the 
\tips, the enthers tiny proubvet tenis ip 
jo Leaves round to cval, merely 
ra czuec, flowers solitary on a 
cc hed pecumele, sepale petal-like Celthe ip 
