XXXIV INTRODUCTION. 



DIVISION II. MONOPETALOUS EXOGENOUS PLANTS. 



Floral envelopes double, consisting of both calyx and corolla ; the latter of 

 more or less united petals. 



* Calyx free from the ovary, 



H- Flowers regular. . 



++ Fertile stamens fewer than the lobes of the corolla. 



Fruit a 1-seeded fleshy drupe. Evergreen shrubs or trees. OLEACEJ5, 351 



Fruit separating into 2-4 nutlets. 



Ovary 4-lobed ; the style rising from between the lobes. LABIATJE, 371 



Ovary not lobed ; the style terminal. VERBENACE M, 307 



Fruit a 2-celled capsule. 



Capsule circumscissile. Leaves alternate, radical. PLANTAGINACE^E, 390 



Capsule 2-valved. Corolla lobes imbricated in the bud. SCROPHULARIACE^E, 306 



Corolla lobes twisted in the bud. ACANTHACE^E, 303 



++ ++ Fertile stamens as many as the lobes of the corolla and opposite them. 



Herbs. Capsule 1-celled, many-seeded. PRIMULACE^E, 297 



Trees or shrubs, rarely herbs. 



Anthers introrse. Calyx plaited, glandular. Fruit a utricle. PLUMBAGINACEJS, 300 

 Calyx not plaited. Fruit a drupe. Embryo transverse. 



MYRSINACE^;, 296 



Anthers extrorse. Ovary 1-celled. Flowers racemose. THEOPHRASTE.E, 296 



Ovary 3 -8 celled. Flowers clustered. SAPOTACE^E, 294 



. -H- -H- Fertile stamens as many as the lobes of the corolla and alternate with them, 



Ovaries 2, separate. 

 Juice milky. 



Stamens united with the stigmas into a mass. ASCLEPIADACE M, 343 



Stamens separate and free from the stigma. APOCYNACEjE, 341 



Juice not milky. Stems creeping. Utricle 1-seeded. DICHONDRE^E, 326 



Ovary solitary. 

 Fruit indehiscent. 

 Leaves opposite. 



Ovary 2-celled. Drupe 1-seeded. Corolla lobes long. OLEACE.E, 351 



Ovary 4-celled. Drupe 4-seeded. Corolla lobes short. VERBENACE^E, 367 



Ovary 4-lobed, the style between the lobes. LABIAT^E, 371 



Leaves alternate. 



Flowers dioecious. Fruit baccate, 4-9 seeded. ILICINE IE, 81 



Flowers perfect. 



Ovary 2-celled. Corolla plaited or valvate. SOLANACE.E, 321 



Ovary 4-celled. Corolla mostly imbricated in the bud. BORRAGINACE^E, 357 

 Fruit dehiscent. 



Capsule circumscissile. Flowers on a scape. PLANTAGINACEJi, 390 



Capsule dehiscent by valves. 



Ovary 1-celled. Leaves lobed, hairy or pubescent. EYDROPHYLLACE.E, 354 



Leaves bipinnate. Flowers capitate. MIMOSE^E, 96 



Leaves entire, smooth. GENTIANACE^, 335 



Ovary 2-5 celled. 



Stipules membranous or annular between the opposite leaves. LOGANIACEJS, 200 

 Stipules none. 

 Capsule few-seeded. 



Stems twining. Leaves alternate. 1 CONVOLVULACE^, 326 



Stems twining. Leaves none. 



