SPECIMEN OF A FLORA OF CANADA. 207, 
Lindley’s sub-classes of Exogens stand thus :— 
Calyx and torus adherent on the 
WHIwED CaLVElSienv-as.rosesfeesccesensceneas EPIGYNOSZ.; 
Carpels free ; androecium adhering on 
Stamens and carpels ordinarily the corolla, or both on the calyx... PERIGYNOSX. 
on the same flower 
[carpe free; outer circles all dis- 
TANCE As aes Suet edeas tide teva <casesvonce HyPoGynosz, 
Stamens and carpels on differ- ‘ 
EIN SLOW EIS sa rtenrctereasesaesi ees cocasusausvectee sce estat dudes sacce-tveownatasctaasaseesnce . DICLINOSZ. 
The following table characterizes the alliances of the sub-class 
Epigynose, which are represented in the Canadian Flora :— 
having a sin- ALLIANCES, 
gle envelope, 
or monochla- 
EUV LC OUS Men. esl sous ticcuoatecassscccasene) Goss secure sesscusaaaaaasersessstaceravetsanadtszssvneeses ASARALES. 
a ( Seeds solitary in 
S each carpel ; 
c : large in propor- 
rs} with copious al- } tion.............0066 UMBELLALES. 
= f bumen & small 
2 embryo 
E n Seeds numer- 
80 ( Dialypetalons Lous, minute...... GROSSALES. 
= é 
with little or no 
3 ; albumen 
almost con- 3 4 UpPlacentte! axilel]) 25.cccvecscecc-sesecewee MYRETALES, 
stantly dich- 5 
lamydeous i) 
minute, amidst 
copious albu- 
INET) noses eesee ures CINCHONALES. 
Synpetalous Embryo 
with littie or no 
Lalbumen ......... CAMPANALES. 
The first alliance is one of the least satisfactory, the uniting 
characters, however important, not being accompanied by any appa- 
rent marks of affinity: Santalaceze are not even uniformly Monochla- 
mydeous. Aristolochiaceze seem to approach Dictyogens. 
OBDERS, 
Carpels 3—6, usually 6; causing the fruit to have as many 
Cells; WithimUMerOuUS SCOAS:.c.000.lcscaoscstevssncesvscseveceesens> ARISTOLOCHIACER. 
Asarales 
Carpels apparently several, but forming one cell, with few 
ovules, perfecting only ome Sed .............ccceeseeceseeeaeeees SANTALACER. 
The order Aristolochiacese, abounding in equinoctial South America, 
and occurring more sparingly in North America, Europe (especially 
the basin of the Mediterranean), and India, remarkable for tonic 
