256 MONCEtlA. 



2. Callitrichk. Barren FL Periatilh b'n\g\e,o( 2 leaves. J/,- 

 ther of 1 cell. 



Fertile FL Germe/i 4 -lobed. Styles'!. Pericarp oi 4 deep, 

 compressed lobes, iiidehiscent:, 4-celled; cells Uscedtd. 

 o. ZosTEBA. Stamens and pisti s inserted in 2 rows upon one 

 side of a spadix. Spaiha foliaceous. 



Barren FL Anthers ovate, bes>bile, alternating with the ger- 

 mens. 



Fertile FL Germ en ovale. Style h\(id. Dn/pew\iU I iceu. 



{Chara, Cryptogamia.) 



2. TRIANDRIA. 



5. Sparganium. Flowers in spheerical dense heads. 



Barren FL Perianth single, of 3 leaves. 

 Fertile FL Perianth single, of 3 leaves. Dr^ipe dry, nith 

 I seed. 



6. Carex. Flowers collected into an imbricated catkin. 



Barren FL Calyx of 1 scale, glumaceous. Cor. 0. 



Fertile FL Calyx of I scale, glumaceous. Cor. of 1 leaf, 

 iirceolate, ventricose. Stigmas 2 — 3. Nut triquetrous, inclu- 

 ded within the persistent cor. 

 4. Typha. Flowers collected into cylindrical dense spikes or 

 catkins. 



Barren FL Perianth 0. Stam.. 3 together, upon a chaffy 

 or hairy receptacle, united below into 1 filament. 



Fertile FL Perianth 0. Pericarp pedicellate, surrounded at 

 the base with hairs resembling a pappus. 



3. TETRANDRIA. 



7. Eriocaulon. F/oM-'er5 collected into a compact, scaly head. 



Barren FL in the disk. Perianth single, 4-cleft, the 2 in- 

 ner segments united nearly to their summit. Slam. 4 — 6. 



Fertile FL in the circumference. Perianth single, deeply 

 4-partite. Style \. Stigmas 2 — 3. Capsule. 2 — 3-lobed, 

 2— 3-celled. Cells 1 -seeded. 



8. LiTTORELLA. Barren FL Calyx of 4 leaves. Cor. 4-fid. 

 Stam. very long. 



Fertile FL Calyx 0. Cor. unequally 3-c!eit. Style very 

 long. Nut 1 -seeded. 

 10. Urtica. Barren FL Periaw^/i single, of 4 leaves, contain- 

 ing the cup-shaped rudiment of a germen. 



Fertile FL Perianth single, of 2 leaves. Pericarp 1 -seeded, 

 shining. 



9. Alnus. /"/oweri" collected into imbricated catkins. 



Barren FL Scale of the catkin 3-lobed, with 3 flowers. 

 Perianth single, 4-parlite. 



