RANUNCUL'ACKiK. (CROWFOOT I-AMILV.) 9 



9. CALTHA, L. Marsh Marigold 



Sepals 4-10, regular, flat, colored, imbricated in the bud, deciduous. Petals 

 none. Stamens numerous; filaments filiform. Ovaries 5-1.5, many-ovuled. 

 Stigma sessile. Follicles capitate or whorled, sessile, spreading, many-seeded. — 

 Perennial, smooth herbs, with cordate or reniform undivided leaves, and showy 

 yellow flowers. 



1. C. palustris, L. var parnassifolia, Torr. Sj- Gr. Stem 1-leaved, 

 1 -flowered ; radical lea\'es long-petiolcd, broadly reniform, sharjily toothed ; se- 

 pals oblong. (C. ficarioides, Pursh.) — Cedur swamps, South Carolma [Pursh), 

 Tennessee, and northward, 



10. ISOPYRUM, L. 



Sepals .5-6, regular, ovate, colored, imbricated in the bud, deciduous. Petals 

 5 and minute, or none. Stamens numerous. Ovaries 2-20. Ovules few or 

 many, in 1 - 2 rows. Style short, subulate. Follicles sessile, membranaceous. 

 Seed horizontal. — Perennial, smooth herbs, with alternate compound leaves, 

 and soUtary white flowers. 



1. I. biternatum, Torr. & Gr. Stem (6'- 12' high) slender, sparingly 

 branched ; radical leaves biternate, on long petioles ; stem-leaves ternatc, nearly 

 sessile ; leaflets ovate and obovate, obtusely 3-lobed ; petals none ; ovaries 1 - 5 ; 

 follicle 2-seeded. (Enemion biternatum, Rof.) — Shady woods, West Florida 

 and westward. April. — Root commonly bearing small tubers. The plant re- 

 sembles Thalictruni anemonoides in general appearance. 



11. AQUILEGIA, L. Columbine. 



Sepals 5, regular, ovate, colored, imbricated in the bud, deciduous. Petals 5, 

 prolonged downward into hollow spurs. Stamens indefinite. Filaments filiform, 

 elongated. Ovaries .5, many-ovuled. Follicles sessile, connivent, many-seeded, 

 tipped with the elongated, filiform, persistent styles. Seeds horizontal. — Erect, 

 perennial, branching, leafy herbs, with alternate ternately-compound leaves ; 

 those of the root long-petioled. Flowers showy, nodding, solitary, or somewhat 

 corymbcd. 



1. A. Canadensis, L. Stems 2° high, smooth or slightly pubescent ; 

 radical leaves bitemate, stem-leaves ternate, short-petioled ; leaflets roundish or 

 obovate, crenately lobed ; flowers scarlet, yellow within ; stamens and styles 

 exserted. — Rocky woods. West Florida and northward in the upper districts. 

 April and May. 



12. DELPHINIUM, L. Larkspur. 



Sepals 5, irregular, colored, imbricated in the bud, deciduous ; the outermost 

 larger, and produced backward into a hollow spur ; the others flat. Petals 4, 

 dissimilar ; the two upper with spurs which are received in the spur of the sepal, 

 the two lower stalked ; sometimes (as in the annual Larkspur) all united. 

 Stamens numerous, included ; filaments subulate. Ovaries 1-5, 1-ceIled, many- 



