90 KEY TO NATURAL OKDERS. 
Drvision II. Moyoretatous: Calyx and corolla both present; the petals 
more or less united. 
A. F THE CALYX COHERENT WITH THE OVARY, the corolla ap- 
ay pose on the ovary. 
Stamens united by their anthers, ¢ nd 
Not by their filam Flowers in heads PAGE. 
which are furnished wit an involucre. er aig 168 
= a or less by their filaments. Flow 
t in heads. 
"Corelis irregular, cleft down one side. 
Flowers perfect. LOBELIACER, 206 
Corolla regular. Flowers monecious. 
Tendril bearing vines. CUCURBITACER, 138 
Stamens — a each other, and 
Inse! se rolla. Leaves opposite or 4 
ions cc without stipules. 
Flow an invo. — head. DIPsAacEgz, 167 
swe eh tiovoluery 
Stamens a Corolla 5-lobed. VALERIANACER, 165 
eae” 4-5. Corolla 4-5- 
lobed. Caprironacez, 160 
Leaves opposite with stipules between : 
them, or whorled without stipules. RUBIACER, 163 
Inserted with but not on the corolla. 
Sta — — as many as the lobes of 
Pe Wooly, saute Huckleberry sub-family i 
: {in ERtcaces, 207 
B. CALYX FREE FROM THE OVARY ; the corolla on the receptacle. 
tamens more in number than ‘the lobes of the corolla. 
Leaves compound. Flowers commonly irregular. ; 
Pod 1-celled. LEGuMInos2, 93 
Leaves oy or palmately divided. Stamens 
united into a tube. MALVACE, 63 
Leaves si tone, on — Stamens united only 
at the base, or separate. 
Stamens on the corolla, twice or four times as 
many as its lobes. EBENACE, 217 
Stamens free from the corolla, twice as many 
as its ] — ERICACER, 207 
2. Stamens as the 5,4 or rarely 6-"Y lobes of the regular corolla. ) 
aa ani with the lobes of the corolla, 5 : 
or 
mon. 
