When the parts of the flower are separate. 
1. Calyx is polysepalous. 
2. Corolla is polypetalous. 
3. Stamens are distinct. 
4. Pistils are simpie. 
When parts of the same series are united. 
1. The calyx is gamosepalous. 
2. The corolla is gamopetalous. 
3. The stamens are syngenoesius. 
4. The pistil is compound. 
Syngenoesious stamens are 
1. Monadelphous (hollyhock, cotton, mallow, etc.) 
2.) Diadelphous (pea etc.) 
3. -Triadelphous (Hypericum). 
Compound pistil, the two or more carpels are united. 
1. Each cavity is a locule. 
2. Sometimes all the wails disappear and there is a com- 
mon cavity (purslane, chickweed, pinks, etc.). 
3. False partition in few cases (crucifers). 
Union of parts of different series=adnation. 
Terms hypogwpous, epigynous, perigynous, superior, in- 
ferior. 
3. Arrangement of Flowers or Mode of Infloresence. 
Flowers are solitary or clustered. 
Flower clusters. 
Solitary flowers are axillary or terminal and separated by 
foliage leaves. 
There are two modes of infloresence. 
1. Corymbose, or indeterminate; axillary flowers. 
2. Cymose, or determinate; terminal flowers. 
Flower clusters with indeterminate inflorescence. 
I. Raceme (choke-cherry, currant, pokeweed etc.). 
Compound raceme as in Smilacina racemosa. 
2. Panicle, by branching of dJateral flower axesonee 
raceme (oat). ; 
3. Thyrsus, compact panicle of pyramidal form (lilac, 
horsechestnut). 
4. Corymb. 
Simple corymb. 
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