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6. V. SAiiMENTOSA Dougl. 8tem prostrate, 

 leafy; leaves cordate, finely crenate; petals 

 yellow. — U- Tamalpais. Taylorville. Sum- 

 mer. 



7. V. LOBATA Benth. Erect leafy stem; 

 cauliDe leaves palmate; petals yellow, exter- 

 nally tinged with purple. — IC- Marin County. 

 Summer. 



Series 2. Ap H A N o c Y c l I c .E. Floral parts 

 showing a tendency to spiral arrangement, and 

 generally distinct. Parts of the gynoecium 

 only occasionally connate. Calyx and corolla 

 often of the same or similar structure. Numer- 

 ical law not yet established. Stamens gener- 

 ally more numerous than sepals and petals. 



Order 1. CKUCIFLORvE. Calyx aud cor- 

 olla formed from 2 and its multiples. Circles 

 of stamens more than 1. Carpidia 2 and its 

 multiples. 



Family 1. CRUCIFER^. 



Sepals 2 pairs. Petals 4. Stamens tetra- 

 dynamous. Ovary free, compound of 2 lateral 

 carpidia; placentae parietal, on the margins of 

 a spurious septum (replum); style 1. Fruit a 

 siliqua, silicula or lomentum. Leaves alter- 

 nate; stipules 0. 



1. Raphanus Tonru. Radish, 



Indehiscent siliqua irregularly moniliform, 

 several -seeded. 



