KEY TO THE ORDERS. 



,•, F^^ro8 In the noanfin refer to pa^eg. When namea are not followed bj flgnre* the ^nos or axc/m k^ 

 dlcated is not eisewhere desoribed in tbla book. 



Calyx and corolla together of either more or less than six parts CLASS 1, ^ 



CaJyi and corolla together of just six parts: petals never five. 



Stamens six or three | 



Stamens many: sepals three, green )" CLASS IT, 12 



Stamens one or two united to the style: ovary inferior ) 



Stamens many: flowers solitary on long peduncles PapaveraceoB, 18 



Stamens ten: petal one: a shrub Leg-uminosoe, 39 



Stamens nine: flowers apetalous, small. 



An aromatic tree: flowers greenish UmbfUularia, (LaurtL ) 



Herbs with several or many flowers in involucral cups Eriogonum, 



CLASS 1.— EXOGKNS OU DICOTYLEDONS. 



Calyx and corolla both present. 



Petals not united (distinct) DrVTSION 1, 5^ 



Petals more or less united (cohering) DIVISION 2, 9« 



Calyx and corolla one or both wanting DIVISION 3. 10' 



DIVISION 1.— POLYPETAL^. 



A. STAMENS MORE THAN 10. 



1. Stamens not adhering' to the sepals or petals (on the receptacle). 



* Pistils few to many distinct carpfU. 



Calyx deciduous, sepals 5: no stipules K-animculaceaa, 14 



Calyx persistent, sepals 3 or 4: growing in water Nympheeaceao, 17 



Calyx persistent, sepals 6 or 10: leaves with stipules Rosaceae, 43 



Calyx of petal-like sepals: oo'^aiUa often wanting Raniinculaceee. 1 4 



