Xll ANALYTICAL KEY. 



Division II. GAMOPETALiE. 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 Ericaceae, 45 



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



Flowers in an involucrate head. Composite, 42 



Flowers separate, racemose or spicate Lobeliaceje, 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 Caprifoliace^e, 39 



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

 Leaves opposite : stamens distinct. . . . Valerianaceje, 41 



Leaves alternate : stamens often united. . . . Cuccrbiiace.e, 33 



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



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



Pistil single and simple : leaves compound. . . LEGUMiNOSiE, 25 

 Pistil compound, with one undivided style Ericaceae, 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 unth them, or fewer. 



* No green herbage. 

 Corolla regular : stamens free : seeds very many and 



minute. ..... Monotropeae, in Ericaceae, 45 



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



Cuscuta, in Convolvulace.e, 54 

 Corolla irregular : stamens didynamous : capsule 1-celled, 



many-seeded • Orobanchace^:, 57 



* * With ordinary green herbage. 

 n- Corolla regular or nearly so: stamens not didynamous. 

 Corolla scarious and veinless : stemless herbs. . . Plantaginace^e, 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 Asclepiadace^:, 49 



Pollen powdery. 



Ovaries 2 : fruit a pair of follicles. . . . Apocynacee, 48 



