76 



ELEMENTS OF BOTANY. 



2. A. PARviFLORA (Michx.) Dunal. Dwarf Pawpaw. A shrub 

 2-4 ft. high ; leaves oblong-obovate, abruptly acute, rusty-pubesceut 

 when young ; flowers greenish-purple, on shoots of the previous sea- 

 son ; outer petals obovate, twice the length of the sepals, the inner 

 petals narrower and shorter ; fruit oblong or pear-shaped, few-seeded, 

 not edible. March-April. In dry woods. 



40. RANUNCULACEiE. CROWFOOT FAMILY. 



Herbs or woody climbing vines, with a watery, acrid juice ; 

 leaves alternate, usually divided or compound ; petioles dilated 

 at the base ; stipules none ; flowers perfect, regular or irreg- 

 ular, hypogynous ; sepals 3-15, deciduous, often petal-like ; 

 petals 5-15, deciduous, often wanting ; stamens many ; ova- 

 ries distinct, usually numerous, but sometimes few, 1-celled, 

 1-many-seeded ; fruit dry or fleshy. 



Flowers irregular 

 Flowers regular. 

 Fruit a berry . 

 Fruit an achene. 



Achenia plumose-tailed 

 Achenia ribbed. 

 Flowers perfect 

 Flowers imperfect . 

 Achenia not ribbed. 

 Sepals petaloid. 



Involucre near the flow 

 Involucre remote . 

 Sepals herbaceous . 

 Fruit a 2-seeded follicle . 

 Fruit several-seeded follicles 

 Follicles 2 . 

 Follicles 5 or more. 

 Leaves simple . 

 Leaves compound . 



V. Delphinium. 



III. Actsea. 



IX. Clematis. 



VIII. Syndesmon, 

 XI. Thalictrum. 



VII, Hepatica. 



VI. Anemone. 



X. Ranunculus. 



11. Isopyrum. 



XII. Pseonia. 



I. Caltha. 



IV. Aquilegia. 



