BOTANY 



CALIFORNIA. 



Series I. PFLENOGAMOUS or FLOWERING PLANTS. 



Plants bearing true flowers, that is, having stamens and pistils, and producing 

 seeds which contain an embryo. 



Class I. DICOTYLEDONOUS on EXOGENOUS PLANTS. 



Stems consisting of a pith in the centre, of bark on the outside, and these sepa- 

 rated by one or more layers of fibrous or woody tissue, which, when the stem lives 

 from year to year, increases by the addition of new layers to the outside next the 

 bark. Embryo usually with two opposite cotyledons, or rarely with several in a 

 whorl. 



Subclass I. ANGIOSPERMiE. 



Pistil consisting of a closed ovary which contains the ovules and forms the fruit. 

 Cotyledons two. 



Division T. POLYPETAL^E. 



Floral envelopes consisting usually of both calyx and corolla ; the petals not 

 united with each other, in some cases wanting. 



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