78 FOUNDATIONS OF BOTANY 
(e) Sepals 5, white. Flowers axillary and terminal. Pods 
2—several-seeded. Isopyrum, III. 
(f) Sepals white or colored. Plants not climbing. Akenes 
more or less tailed with the styles in fruit. 
Anemone, IX. 
(g) Sepals 5-10, white. Flowers in an umbel. Roots 
tuberous. Anemonella, XI. 
I. PAONIA, L. 
Perennial; from thick, fleshy roots ; stems shrubby or her- 
baceous. Leaves much divided. Flowers terminal, large and 
showy. Sepals 5, leaf-like and persistent. Petals 5 or more. 
Pistils 38-5 ; ovaries surrounded by a disk.* 
1. P. officinalis, L. GarpeEN Pony. Herbaceous; flowering 
stems 1-2 ft. high. Leaves ample; leaflets lance-ovate, cut or 
incised, smooth. Flowers double, white or red. Follicles 2, erect, 
many-seeded. Common in gardens.* 
Il. CALTHA, L. 
Smooth perennials with large, roundish leaves. Sepals 
petal-like, 5-9. Petals none. Pistils 5-10, each consisting 
of a 1-celled ovary with a nearly sessile stigma. Fruit a 
many-seeded follicle. 
1. C. palustris. Marsn Maricouip, Cows.irs, MEADow BuTTer- 
cup (both the latter unsuitable names, but in common use). Stem 
hollow, smooth, ascending; leaves smooth, roundish and _heart- 
shaped, or kidney-shaped, with crenate, dentate, or nearly entire 
margins; the broad oval sepals bright yellow. Swamps or wet 
ground. 
Ill. ISOPYRUM, L. 
Small, smooth herbs. Leaves 2-3, times compound, in 
threes ; the leaflets 2-3-lobed. Flowers peduncled, white. 
Sepals 5, petal-like, soon falling. Petals wanting (in our 
species). Stamens 10-40. Pistils 3-6 or more. 
1. I. biternatum, Torr. and Gr. A delicate, erect plant, with alter- 
nate branches, looking much like Anemonella, with clustered stems 
from perennial tuberous roots. Damp woods. 
