KEY TO THE FAMILIES '2S'.', 



ff. Blossoms perfect and not in catkins, or sometimes 

 imperfect and in shorl catkins, but the fruit 



not a nut: trees, shrubs, or herbs 



VIII. Urtieaeea, p. 301 

 fff. Blossoms perfect, not in catkin-.: fruit an akene: 



berbs IX. Polygonact <> . p. 304 



be. Flowers characteristically polypetalous, mostly larger 



ami often showy [Polypetala ). Some of tin- Ra- 



nunculaceffi Inn- described are apetalous, Imt 



there is a calyx-like involucre underneath the 



flower. 



r. Petals ami -lam. ms borne on tin- not-enlarged torus 



(hypogynous) : ovary superior, 



<; Leaves opposite at swollen uodes, very narrow, 



often grass-like X. Caryophyllaceae, p. 306 



o... Leaves alternate or opposite, mostly broad, nol 

 grass-like, the uodes usually not conspicu- 

 ously swollen. 

 ii. Carpels solitary or distinct (i. <.. ovary sim- 

 ple) XI. Ranuneulaeea, p. 



hh. Carpels variously united (ovarj compound). 



i. Stamens 6: fruit a Bilique or > i 1 i<- 1<- 



XII. Crueifi ra . p. 310 



ii. Stamens numerous: fruit various 



XIII. Malvaeea, p. 312 

 ff. Petals ami Btamens borne on a 'li-k >>r rim but- 

 rounding the pistil: ovarj superior. 



.. Berbs XIV. Oeraniaeea, p. 313 



qq. Trees or shrubs XV. Sapindaeeif , p. 315 



fff. Petals ami Btamens borne on the calyx or mi a bo] 

 low calyx-like torus. 

 o. 1 1 vary superior, except in i lie pear tribe | rtosaei .. 



ii. Fruit a legume \ \ l Ltgumitiosa, p. 310 



mi. Fruit do1 a legume: Btamens 20 or Dion 



XVII. Bi taeea . p. 3ig 



i >\ arj distinct Ij mi' rlor. 



ii . Flowers corymboHe or paniculate, showj 



XVIII. i 

 mi. Flowers In umbels, -mall . .XIX. / mbtllifrrtr, p 

 M.. Qaraopetaln : corolla in one plec< -i toward* the 



base 'a- if petals were more or less nun. 

 i . i u ar\ superior. 



i Fruit "t l null' I-. produced from a I lobed o 



\ \. Labiata . p 

 ff. I in it Dot a nui lei ,u -ii. ill \ capsulari *onn timi - 1 1" i > 

 ' 'orollu regular. 



