CLASSES; ORDERS, AND GENEEA. 



4 



DICECIA 



si 



I .r 



1. Najas. 



} Stamens and pistils in separate flowers and on 



different plan ts, 



Ord. I. MoNANDEiA. 1 stamen. 



Germen with 1 ovule. 



many ovules. Leaves 



Barren fl. within a spatha. 



486. 



Leaves simple-veined, p, 

 2. Salix. Spatha none. Germen with 

 netted-veined. p. 391. 



1 



6. 



Ord. IL DiAis^DKiA. 2 stamens. 



3. Salix. Scales of the catkin single-flowered, imbricated, with 



-2 nectariferous glands at the base. Perianth 0. Stigmas 

 2, often cleft. Caps, l-celled, 2-valved, many-seeded. Seeds 

 comose. p. 391. 



Ord. III. Tri-Pentandhia. ^— -5 stamens. 



1 



Sterile flowers not in catkins, or with a perianth besides the scale of 



the catkin. 



4. Empetrum. Perianth and bracteas of many imbricating scales, 

 of whidi the 3 mner are often regular, spreading, and peta- 

 loid. JFilaments 3, long, inserted under the germen. Germen 

 superior, globose. Style short. Stigma dilated, peltate, rayed, 

 iruitfleshy, 6— 9-seeded. p. 374. 



5. Ruscus. Perianth single, of 6 leaves. Filaments combined 

 into a tube, bcanng 3 anthers at the summit. Style 1, sur- 



\Tifj^'^Y%''''-'V\ Stigma 1. Germen superior, 

 3-ceJled, 6-seeded. Pruit fleshy, p. 446. 



Valeriana. Cor. monopetalous. Stamens 3, upon the corolla. 

 Germen mferior. Style 1. Stigma 3-fid. Fruit dry, 1-seeded, 

 crowned with the calyx expanded into a pappus, p. 200. 



Sd-ni^f .'^'°^'^'.\^^^- ^' ^f b^^^'^ fl- «^«^«' fleshy, 

 united at the base, and bearing each a single anther adnate 



'■ ^Stem '4 IfT^. "^"f ^^^- C^l- ^^-e^o^^te 4-cleft. Pet. 4. 



thro"i of Z oil '"^ *' P'*^^'^' fl^^"^^^^« i^^'^r'^d upon the 

 9 TT,™ ^"^e ^%^. ovary superior, p. 92. 



each seale'bp?™" l' ''^^'''''^ ^"^° ^ ^'"^^ «°^t «f «-tkin, 

 nearlv din ? "^' ^ ^''^''- ^^"^"^h single, of 2 roundish 

 sohtarv P 'P^"''- f ^^'^^^^ 3' ^i^^a'-' sessile.- Fertile fl. 

 , germen superior, p. 388. 



tIS o^ienvpf'^S '^"Sl'' °^ '^^ ^^"^^ fl- 4-leaved, of the fer- 

 . j;;«g24eaved. Stam. 4. Stigma 1, sessile. Achene superior. 



''' ^^St'™' AnT"" ^-.ff'^^J- Perianth single, of 5 leaves. 

 Tcatfins Is hi' ""'"'^ ' P.^'^' ^' t^e extremity - Fertile fl. 

 rianth o ' P ""'^^ persistent concave entire scales. Pe- 

 nanth^O. Germen superior. Styles 2. Achene 1-seeded. 



' From i,(, two, and ot^os, a ;ioa#e. 



