Xii ANALYTICAL KEY. 



Division n. GAMOPETAL^. Petals more or less united into one 



piece. 



A. Ovary inferior, or mostly so. 



Stamens more numerous than the lobes of the corolla, 8 or 10, dis- 

 tinct Ebicaceje, 45 



Stamens as many as the lobes of the corolla, 5 (or 4), syngenesions. 



Flowers in an involucrate head. Composite, 42 



Flowers separate, racemose or spicate LoBELiACEiE, 43 



Stamens as many as the corolla lobes (at least 4'), distinct,- «< 

 Nearly or quite free from the corolla: leaves alternate: 



no stipules. •• . Campanulaceje, 44 



Inserted on the corolla : leaves opposite or whorled, 



With stipules, or else in whorls, quite entire. . . Rubiace/E, 40 



Without stipules, opposite CAPRiFOLiACEiE, 39 



Stamens only 3, fewer than the lobes of the corolla. 

 Leaves opposite : stamens distinct. . . . Valerianace^, 41 



Leaves alternate : stamens often united. . . . Cuccrbixace^, 33 



B. Ovary superior (free), or mostly so, 



1. Stamens more numerous than the lobes of the corolla. 



Pistil single and simple : leaves compound. . . Leguminos^e, 25 

 Pistil compound, with one undivided style Ericace.*;, 45 



2. Stamens as many as the lobes of the corolla and opposite them. 

 Style 1 : ovary and capsule several to many-seeded. . . Primulace^, 46 



3. Stamens as many as the lobes of the corolla, and alternate mth them, or fewer. 



* No green herbage. 

 Corolla regular : stamens free : seeds very many and 



minute. . . ... Monotropeae, in Ericace^, 45 



Corolla regular : stamens on the tube : fruit 2-celled. 



Cuscuta, in Convolvulace^, 54 

 Corolla irregular : stamens didynamous : capsule 1-celled, 



many-seeded Orobanchace^, 57 



* * With ordinary green herbage. 

 •»- Corolla regular or nearly so: stamens not didynamous. 

 Corolla scarious and veinless: stemless herbs. . . Plaxtaginace^, 61 

 Corolla more or less veiny. 



Stamens 2 or 3 : parts of the corolla 4 or 5. . . . Oleace^, 47 

 Stamens 5 (or 4), as many as the corolla-lobes. 

 Pollen in solid waxy masses : fruit a pair of folli- 

 cles AsCLEPIADACEiB, 49 



Pollen powdery. 



Ovaries 2 : fruit a pair of follicles. . . . Apocynace^, 48 



