XXIV ANALYTICAL KEY. 



Division II. MONOPETALOUS ; calyx and corolla both present ; the 

 latter with its petals united more or less into one piece. 



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



Ovary 1 -celled with one parietal placenta. (Trifolium and 



some Mimoseae may Lie taken for monopetalous.) 88 (42) Leguminosve. 

 Ovary 1-celled, with 2 parietal placentae. Adlumia, &c. 26 Fumariace.e. 

 Ovary 1-celled with the ovules at the centre or base. 265 Styhacace.e. 



Ovary 3 - many-celled. 



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

 Stamens inserted on the base or tube of the corolla. 

 Filaments monadelphous : anthers 1-celled. . 65 (36) Malvaceae. 



Filaments somewhat monadelphous at the base or 5- 

 adelphous : anthers 2-celled. 



Calyx free from the ovary 70 (38) Camelliacejs. 



Calyx adherent with the ovary or with its base. 265 Styracace;e. 



Filaments wholly distinct : calyx free, persistent. . 266 Ebenace.e. 



SI. Stamens [fertile ones) as many as the lobes of the corolla and opposite them.* 



Ovary 5-celled : corolla appendaged with scales inside. 267 Sapotace.e. 



Ovary 1-celled: pod several -many seeded : style 1. 270 (62) Primulace.e. 

 Ovary 1-celled: utricle 1 -seeded : styles 5, or only one 



and 5-cleft 270 (62) Plumbaginacejs. 



C Stamens as many as the lobes of the corolla and alternate with them, or fewer.* 



# Ovary adherent to the calyx-tube [inferior). 



Tendril-bearing herbs : anthers often united. . 138 (52) Cocdrbitace^:. 

 Tendrils none. 



Stamens united by their anthers into a ring or tube. 

 Flowers capitate, the head involucrate. . . 177 (56) Composite. 

 Flowers separate, irregular ; the tube of the corolla 



cleft down one side 241 (60) Lobeliace^e. 



Stamens separate, and 

 Free from the corolla or nearly so ; leaves alternate, 



without stipules : juice of the stem milky. 243 (60) Campanulace.<e. 

 Inserted on the corolla, 



Didynamous : ovary 1-celled, with two parietal 



and many-ovuled placenta?. . . . (63) Gesneriaceje. 

 Not didynamous. 



One to three, always fewer than the lobes of the 



corolla 174 (56) Valerianace.e. 



* Beware here of Mirabiln '. which seems to be monopetalous, with the ovary between the 

 oalyx and corolla ; but it is really apetalous. See pp. lxsiv, and 360. 



