ANALYTICAL KEl. 23 



Anthers not opening by pores. 



Stamens on a flat disk which covers the ovary. Celastrace^, 109 

 Stamens inserted on the calyx. 



Eight or four (rarely five) ; style 1. . . Onagrace^, 186 

 Five or ten ; styles 2 - 3, distinct. , . Saxieragace^e, 168 

 Ovules and seeds only one in each cell. 



Stamens 10 or 5 (instead of many), — rarely in Crataegus, in Rosacea, 165 

 Stamens 2 or 8; style 1 ; stigma 2-4-lobed; herbs. Oxagracej^, 186 

 Stamens 4 or 8 ; aquatics ; styles or sessile stigmas 4. Haloeage^, 180 

 Perfect stamens 4 ; styles 2; shrub. . . Hamamelide.e, 179 



Stamens 4; style and stigma 1 ; chiefly shrubs. . . Cornace^, 213 

 Stamens 5 ; flowers in umbels, or rarely in heads. 



Fruit dry, splitting in two at maturity; styles 2. Umbellifer^, 198 

 Fruit berry -like ; styles 2-5, separate or united. Araliace^, 212 



Division II. GAMOPETALOUS calyx and corolla both present; 

 the latter with its j^etals united more or less into one piece. 



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



Ovary 1-celled witli one parietal placenta, . . . Legumixos.e, 12? 

 Ovary 1-celled with two parietal placentaj. Adlumia, &c., in Fumariace.e, 60 

 Ovary 1-celled with the ovules at the centre or base. . Styracace^, 333 

 Ovary 2-celled with a single omle in each cell, . . Polygalace^, 120 

 Ovary 3 - many-celled 



Stamens free or nearly free from the corolla; style single. Ericace^, 309 

 Stamens free from the corolla ; styles 5. Oxalis, in Geraxiace/E, 105 



Stamens inserted on the base or tube of the corolla- 

 Filaments monadelphous ; anthers 1-celled, kidney -shaped. Malvace^, 96 

 Filaments 1 - 5-adelphous at base ; anthers 2-celled. 



Calyx free from the ovary Ternstrcemiace^, 95 



Calyx coherent with the ovary or with its base. Styracace^, 333 



Filaments wholly distinct ; calyx free, persistent. Ebexace^, 333 



Filaments in pairs at each sinus; anthers l-celled. Caprifoliace^, 216 



B. Stamens {fertile ones) as mam/ as the lobes of the corolla and opposite them. 



Ovary 5-celled ; corolla appendaged with scales inside. Sapotace^, 332 



Ovary 1-celled; pod several - many-seeded ; style 1. Primulace^, 328 



Ovary 1-celled ; utricle 1-seeded ; styles 5. . . Plumbagixace^, 327 



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



1. Ovari/ adherent to the calyx-tube {inferior). 

 Tendril-bearing herbs ; anthers often united. , Cdcurbitace^, 194 



Tendrils none. 



Stamens united by their anthers iato a ring or tnbe. 



Flowers in an involucrate head. ... Composit.e, 230 



Flowers separate, not involucrate ; corolla irregular. LoBELiACEiE, 305 

 Stamens sepr.rate, free from the corolla or nearly so, as 



many as its lobes: stipules none : juice milky. Campanulace^.307 



