KEY TO THE ORDEKS. XVll 



II. GAMOPETALOtJS DIVISION. 

 Corolla with the petals united together, in however slight a 

 degree. 



A. Calyx superior (adlierent to the ovary). 



* Stamens united by their anthers. 



CucCREiTACE^. — Tendril-bearing herbs 85 



Composite:— Flowers in heads, surrounded by an involucre 102 

 LoBBLiACEiE. — Flowers not in heads. Corolla split down 



oue side 135 



* * Stamens not united together in any way. 



■i- Stamens inserted on the corolla. 



DipsacEjE. — Flowers in heads, surrounded by an involucre. 



Plant prickly 101 



Valbrianace^. — Flowers white, in clustered cymes. Sta- 

 mens fewer than the lobes of the corolla 101 



RUBIACB^. — Leaves, when opposite, with stipules ; when 

 whorled, without stipules. Flowers, if in heads, 

 without an Involucre 98 



Capbifoliace^. — Leaves opposite, without stipules; but, 



in one genus, withappendages resembling stipules. 95 



+- +- Stamens not inserted on the coroUa. 



CampanulacEjE. — Herbs with milky juice. Stamens as 



many as the lobes of the corolla 136 



Ebicacb^. — Chiefly shrubby plants or parasites. Stamens 



twice as many as the lobes of the corolla 137 



B. Calyx Inferior (free from the ovary). 



* Stamens m/ire than the lobes of the corolla. 



LbguminosjE. — Ovary 1-celled, with 1 parietal placenta. 



Stamens mostly diadelphous. . . 49 



Adlumla, in 



FumariacejE.— Plant climbing. Corolla 2-spurred 15 



Malvaoe^:. — Filaments monadelphous. Carpels in a ring. 38 

 Ebioacbj;. — Chiefly shrubby plants, with simple entire 

 leaves. Stamens twice as many as the lobes of 



the corolla 137 



PoLTGALAoa:.— Anthers 6 or 8, 1-celled, opening at the 

 top. Pod2-celled. Flo wers irregular ; lower petal 

 keel-shaped, and usually fringed at the top 48 



