XXvi ANALYTICAL KET. 



Ovary one : pod 2-lobed or 2-horned at the summit. Loganiese, 169 Rubiace^s. 

 Ovary one, not divided nor deeply lobed, 



One-celled, simple : style and stigma 1, undivided. 88 (43) Leguminosje. 

 One-celled, compound : styles, stigmas, or parietal placenta} 2. 

 Leaves (or in Menyanthes 3 leaflets) entire. . . 341 Gentianace^e. 

 Leaves toothed, lobed or pinnately compound. -> 

 Imperfectly 2-celled by two broad parietal pla- j- 26 (69) Hydrophyllaceje. 



centse meeting each other. . . > 



Two- to ten-celled. 



Leafless and parasitic twining plants. Cuscuta, 332 Convolvolace^;. 



Plants with ordinary green leaves. 



Style none : corolla deeply 4 - 6-parted. . . 263 AquifoljacejE. 

 Style present. 



Stamens free from the corolla or nearly so. 245 (61) Ericaceae. 



Stamens inserted on the corolla, 

 Four : corolla scarious : pod 2-celled, opening 



transversely, the top falling as a lid. 268 Plantaginaceje. 

 Four: ovary 2-4-celled, with one ovule in each. 299 Verbenace.£. 

 Five or rarely more. 



Leaves opposite, with stipules, or a transverse 



line in their place. Gelsemium, p. 296, and 169 Loganie^. 

 Leaves mostly opposite, no stipules, "J 

 Leaves alternate : style 3-cleft at apex. , . _ 



, . i-329 (70) POLEMONIACE^. 



Leaves alternate and opposite : an- j 

 thers transversely 2-valved. j 



Leaves mostly alternate : style undivided or rarely 2-cleft. 

 Ovules and seeds very numerous. 



Corolla imbricated in the bud. 281 Scrophulariace^. 



Corolla either plaited, val vate, or twisted, 



rarely imbricated, in the bud . 338 (71) Solanace^e. 

 Ovules and seeds 1 or 2 in each cell. 

 Style short : fruit splitting into two or 



four seed-like nutlets. . 319 (69) Borraginace^;. 

 Style long : flowers showy : fruit a 



2 - 3-valved pod. . . 332 (70) Convolvulace^.. 



++ +-f Stamens fewer than the lobes of the corolla. 



Stamens 4, didynamous. 



Ovary 2-celled ; the cells 2 -few-seeded. . . 296 (66) Acanthacejs. 



Ovary 2-4-celled; the cells 1 -seeded. . . 298 (66) Verbenace^;. 



Stamens 2, rarely 3 : ovary 2-celled. 



Low herbs : corolla scarious, withering on the pod. 268 Plantaginace^:. 



Herbs (rarely shrubs) : corolla rotate, or somewhat funnelform, 



slightly irregular, deciduous. Veronica, 281 (64) Scrophulariace^s. 



Shrubs or trees. 



