ANALYTICAL KEY. xill 



Ovary 4-lobed, forming 4 separate or separable seed- 

 like llUtletS. BOREAGINACE.S}, 53 



Ovary single and entire. 

 Style 3-clef t at apex : capsule 3-celled : corolla 



convolute Polemoniace^:, 51 



Styles or stigmas 2 or 1 . 

 Ovules and seeds at most 4, large, with large embryo and 



little or no albumen : peduncles axillary. Convolvulace^s, 54 

 Ovules few or numerous : embryo small, in albumen. 

 Leaves all opposite or whorled and entire : capsule 



1-celled : corolla convolute. • . Gextianace.*:, 50 

 Leaves various, mainly alternate. 

 Styles 2 (or 1 and 2-cleft) : capsule 1 to 2- 



Celled. m HYDEOPHYLLACEiE, 52 



Style 1 : stigma usually 1 : capsule or berry 



2-celled, rarely more Solanaceje, 55 



See also Limosella, in Sceophulakiace^;, 56 



«- -f- Corolla irregular: stamens (with anthers) 4 and didynamous, or 2: style 1. 

 Ovary and capsule 2-celled : seeds small, mostly indefi- 

 nite SCKOPHULARIACE.a:, 56 



Ovary and capsule 1-celled, with many-seeded placentae 



in the axis Lentibulariace^!, 58 



Ovary 4-parted, in fruit as many seed-like nutlets. . . Labiate, 60 

 Ovary undivided : fruit dplitting into 2 or 4 one-seeded 



nutlets. Verbenacea:, 59 



Division III. APETAL.32. Corolla (and sometimes calyx) wanting. 

 A. Flowers not in amends. 



1. Ovary and fruit superior, 1-celled and l-ovuled, or carpels distinct if more 



than one. 



Stipules sheathing the stem at the nodes. . . . Poltgonace^;, 66 

 Stipules not sheathing the stem or none. 

 Shrubs or trees. 

 Leaves alternate : flowers perfect : fruit a tailed akene. 



Cercocarpus, in Eosace^, 26 

 Leaves alternate : flowers unisexual : fruit a utricle. Chexopodi ace^e, 65 

 Leaves opposite. 

 Fruit an akene : leaves small and narrow. Coleogyne, in Rosacea, 26 

 Fruit a simple samara : leaves pinnate. Fraxiuus, in Uleacejs, 47 



Herbaceous, or sometimes woody at base. 

 Fruit a utricle : seed lenticular : embryo annular or spiral. 

 Flowers with scarious persistent sepals and bracts : no 



stipules Am abantacejK, 64 



