DICOTYLEDONES. xH 
** Appearing syncarpovs from the fleshy disk envelojnng 
the ovaries. 
3. Xymphceacecc. Polyandrous. Pet. many, seated 
with the many stamens upon a fleshy disk. — Aquatic. 
Ehizome prostrate in nmd. Leaves floating 16 
*** Syncarpous with parietal placentas. 
4. Papaveracea. Polyandrous. Sep. 2, deciduous. 
Pet. 4. Pistil 1 17 
5. Fumariaceif. Stam. in two bundles of 3 each ; 
lateral anth. of each bundle 1-celled. Sep. 2, minute. 
Pet. 4, irregular, one or more of the upper gibbous or 
spurred at the base. Fl. very irregular 20 
6. Crucifera;. Stam. tetradynamous. Sep. 4. Pet. 4. 
— Fl. cruciform 22 
7. Resedacece. Stam. 10 — 24, from an hypogynous 
1-sided disk. Sep. 4 — 8. Pet. 4 — 8, irregular. Caps, 
opening at the top 41 
8. Cistacece. Polyandrous. Sep. 3, equal, and 2 
smaller external. Pet. 5, regular, very deciduous 41 
9. Violacece. Stam. 5 ; anth. on inner side of dilated 
filaments which slightly cohere. Pet. 5, irregular ; lower 
spurred 43 
10. Droseraceif. Stam. 5. Cal. 5-cleft. Pet. 5, 
regular. — L. bearing long hairs tipped with glands 46 
11. Frankeniacece. Stam. 4 or more. Cal. 4 — 5-cleft, 
furrowed. Pet. 4 — 5, regular. — L. with revolute edges, 
not glandular 47 
**** Syncarpous with axile placentas. 
t Fl. irregular. 
12. Polygalacece. Stam. 8, in 2 equal opposite bundles. 
Anth. 1-celled 48 
tt Fl. regular (except in Ord. 20). 
13. Elatinacew. Pet. 3 — 5. Stam. as many or twice 
as many as the petals. Caps. 3— 5- celled. — L. opposite. 
Plants aquatic 49 
