KEY TO THE ORDERS. 
eo". Figures in ths margin refer to pages. When names are not followed by figures the genus or ores te 
dicated is not eisewhere desoribed in this book, 
Calyx and corolla together of either more or lesa than six parts.......... CLASS & 6 
Calyx and corolla together of just six parts: petals never five. 
Stamens six or three... ... 6. eee cece cece eect teen ee nee 
Stamens many: sepals three, green......... ieeeautees € Scllateatsaie CLASS I, 12 
Stamens one er two united to the style: ovary inferior........ 
Stamens many: flowers solitary on long peduncles........... Papaveracess, 18 
Stamens ten: petal one: a shrub...........csceeeeeseecceees Leguminosss, 39 
Stamens nine: flowers apetalous, small. 
An aromatic tree: flowers greenish............... Ombellularia, (Laureé.) 
Herbs with several or many flowers in involucral cups......... Eriogonum, 
CLASS L—EXOGENS OR DICOTYLEDONS. 
Calyx and corolla both present. 
Petals not united (distinct)......... eipiaiawieiiaisioes valle Caraeis DIVISION 1, 5 
Petals more or less united (cohering).......eseeseeee- Wine eles DIVISION 2, 9 
Calyx and corolla one or both wanting........... nes srarel sista Heiesdatess DIVISION 38, 10 
DIVISION 1.—POLYPETALA. 
A. STAMENS MORE THAN 10. 
1. Stamens not adhering to the sepals or petals (on the receptacle). 
* Pistils few to many distinct carpela. 
Calyx deciduous, sepals 5: no stipules........ tis leliora)ahevestn ya \avera%e) Sra Ranunculacem, 14 
Calyx persistent, sepals 3 or 4: growing in water............s000- Nymphezeacess, 17 
Calyx persistent, sepals 5 or 10: leaves with stipules....................Rosacem, 48 
Calyx of petal-like sepals: comalla often wanting..............0+- Ranunculaces, 14 
