364 



MANUAL OF BOTANY 



Carpels two or more, not divaricating, 

 combined. 

 Calyx valvate, or the limb obsolete. 

 Stamens alternate with the petals if 

 isomerous. 

 Albumen none. Ovules horizontal 



or ascending .... Onagracece. 



Albumen present. Ovules pendu- 

 lous ...... Haloragacece. 



Albumen abundant. Flowers con- 

 spicuous ..... Cornacece. 



Calyx not valvate. 



Stamens doubled downwards. Anthers 



with appendages. Leaves ribbed Melastomarecp. 

 Stamens only curved. Anthers short. 



Leaves dotted Myrtacece. 



Leaves not dotted. 



Seeds very numerous, minute . Escalloniacece. 

 Seeds few Bruniacece. 



b. Leaves loitli stipules. 



Placentas i)arietal. 



Stipules cirrhose. Gamopetalous . 

 Stipules deciduous. Petals distinct 

 Placentas in the axis. 



Stamens, if equal to the petals, alternate with 

 them. 

 Leaves opposite ...... 



Leaves alternate ..... 



Cuciirhitacece. 

 HomcdiacecB 



Bhizojjhoracece. 

 HamameUdacece. 



Although it generally happens that the Calyciflorte have dichlamydeous 

 flowers, polypetalous corollas, and perigynous or epigynous stamens, yet 

 many exceptions occur, which should be particularlj^ noted by the student. 

 Thus, we find apetalous plants in the Leguminosce, Bosacece, Saxifra- 

 gacece, Cunoniacece, Crassidacece, HamameUdacece, Haloragacece, Cal- 

 litrichacece, Bhizophoracecp, Co)nbretacecp, Samydacece, Loasacece, 

 Datiscacecp, Mesembryanthacecp, Araliacece, Garry acece, Myrtacece, 

 Lythracece, Onagracece, PassifloracecE. Gamopetalous corollas occur in 

 some PapayacecB, Cuciirhitacece, Belvisiacece, Crassidacece, Droseracece, 

 Bruniacece, Melastomacece, Turneracece, Cactacece, LecytJiidacece, Ara- 

 liacece. In some Calyciflorae, again, the stamens are wholly or in part 

 hypogynous or nearly so, as in some Connaracece, Leguminosce, Saxifra- 

 gacece, Crassidacece, Francoacece. 



Unisexual flowers occur as a rule in Ccdlitrichacece, Papayacece, 

 Garryacece, and Cucurbitacece, and sometimes in Bosacece, Hydran- 

 geacecE, Passiflor acece, Bibesiacece, Haloragacece, Combretacece, Cor- 

 nacece, HamameUdacece, and A7'aliacece. 



