KEY TO THE ORDERS A, xxi ms 
Stamens as. eee ae the petals and alternate with them, 
or more or 
Styles distinct gd separate. 
Upper pee of the ovaries distinct, at least at ma- 
urity 
Sa xifragaceae and Iteaceae in Order ROSALES. 
Upper part of the ovaries united. Order SAPINDALES. 
SENISS united. 
Hypanthium flat or obsolete: disk fleshy. 
Pla without secreting gar F the bark. 
Cd eee: 
Plants with SELNES glands in e bar 
milies in Order C NE, 
Hypanthium cup- -shaped or campanulate: disk obso- 
lete or inconspicuous, Order MYRTALES. 
Ovary inferio 
Stamens um 
Styles and stigmas united into a disk: water-plants with e 
dogenous stems, Nymphaeaceae in Order rene 
Styles distinct, or united, but not forming a disk Rl radi- 
ating stigmas : land- ‘plants with exogenous s 
P distinct, 
mens distinct : stigmas simple: shrubs or trees, 
amilies in Order ROSALES. 
Stamens with united filaments : styles Mn herbs. 
EGONIALES. 
Styles united. 
Shrubs 2 trees, not succulents, sometimes woody vines. 
H nthium not produced beyond the ovary. 
ydrangeaceae in a ROSALES. 
Hypanthium produced beyond the o 
Families in Order MYRTALES. 
Herbs, or shrub-like or tree-like suc 
r OPUNTIALES. 
Stamens not more than twice as many as the eid 
Styles wanting: stigmas sessile. 
Gunneraceae in Order MYRTALES. 
Styles present. 
Styles distinct. 
vules several in each cavity of the Ac fruit a cap- 
sule or a fleshy BU ber 
Frui t, if dehiscent, valva 
“Families in Order ROSALES. 
Fruit circumscissile. 
rtulacaceae in Order | CHENOPODIALES. 
a 
Ovules solitary in each cavity of the Qs fruit 
drupe or 2-5 more or less united achen 
Or de: Pagan. 
Styles united, or single 
Plants pu tendrils. 
Ova nclosed m or surpassed by the bypanthium 
"n "adnate i 
Anther-sacs ODCHIHS by por 
Va ciniaceae "in Order ERICALES. 
 Anther- -sacs opening by sli 
Ovules solitary in each CAVIS of the ovary. 
rder AMMIALES. 
Ovules several in each cavity. 
Ovary with parietal DI CRINE. 
oasaceae in Order OPUNTIALES. 
Ovary with poer 2 vr placentae. 
rder MYRTALES. 
Ovary exceeding the horondium. the top free. 
Hydrangeaceae in Order ROSALES. 
Plants with tendri 
Herbs: fruit a Poo leaf-blades palmately veined. 
wink rbitaceae 2 oe CAMPANULALES. 
Shrubby vine "fr uit dru eous, separating into 
nutlets : leaf-blades pinnately veined. 
Frangulaceae in Order RHAMNALES. 
dico. more s n united. 
Stamnan: free fr om the co 
rs: um of a aA "carpet Families in Order ROSALES. 
EIU of several united carpels. 
Pilaments uni 
Sta e diadelphous. Fumariaceae in Order PAPAVERALES. 
Stamens monadelphous. 
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