XXIV ANALYTICAL KEY. 



DIVISION U. 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 be taken for monopetalous.) 88 (42) LEGUMINOS.E. 

 Ovary 1-celled, with 2 parietal placentae. Adlumia, &c. 26 FUMARIACE^J 

 Ovary 1-celled with the ovules at the centre or base. 265 STYRACACE^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) CAMELLIACE.*, 



Calyx adherent with the ovary or with its base. 265 STYRACACE.E 



Filaments wholly distinct : calyx free, persistent. 266 EBENACEJJ 



R. Stamens (fertile ones) as many as the lobes of the corolla and opposite them.* 



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



Ovary 1-celled: pod several - many-seeded : style 1. 270 (62) PRIMULACE^B. 

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



and 5-cleft 270 (62) PLUMBAGINACE,*!, 



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) CUCDRBITACB^B. 

 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) LOBELIACEJE. 



Stamens separate, and 

 Free from the corolla or nearly so ; leaves alternate, 



without stipules : juice of the stem milky. 243 (60) CAMPANULACE^S. 

 Inserted on the corolla, 

 Didynamous : ovary 1-celled, with two parietal 



and many-ovuled placentas. . . . (63) GESNBRIACEJE. 

 Not didynamous. 



One to three, always fewer than the lobes of the 



corolla 174 (56) VALERIANACEJE. 



" Beware here of Mirabihs ! which seem* to be monopetalous, with the ovary between the 

 calyx and corolla ; but it is really apetalous. See pp. Ixxiv, and 360. 



