ORDER 47.—ROSEWORTS. 201 
10. POTENTIL'‘LA. Cinquefoil. 
Calyx deeply 4-5-cleft, with an equal number of alternate bractlets 
outside. Petals 4-5, obcordate. Stamens o. Achenia o, collected in 
a head on a small, dry receptacle-—Herbs or shrubs with compound leaves 
and (mostly) yellow flowers. (Figs. 76, 77.) 
* Leaves palmately compound....a 
* Leaves pinnately compound....6-8 
a Leaflets 8 only in each leaf....1 
a Leaflets 5. Stems prostrate or inclining....4, 5 
1 Flowers yellow. Stems herbaceous....2, 3 
1 P. tridenta’ta. Trident C. Fis. white. Lfts. wedge-obov., 3-toothed at end. N. 
2 P. Norve’gica. Norway C. Erect, many-flowered. Petals short. N. M. 
8 P.min‘ima. Tiny C. Low. Stems 1-flowered. Pet. longer than sepals. Mts, 
4 P.Canaden’sis. Canada C. Leaflets green both sides, serrate, oblong. 
5 P. argen’tea. Silver C. Leaflets silvery-white beneath, pinnatifid, 
6 P. frutico’sa. Shrubby C. Erect, shrubs with yellow flowers. Height 1-2f. N. 
7 P. Anseri’na. Goose-grass. Stemless herbs. Leaves and peduncles radical, 
8 Herbs with leafy stems. (8 rare species omitted.) 
11. FRAGA’RIA. Strawberry. 
Calyx deeply 5-cleft, with an equal number of alternate bractlets out- 
side. Petals 5, obcordate. Stamens ». Achenia many, fixed to the 
surface of the large, conical, pulpy, scarlet or white receptacle-—Low 2 
plants with trifoliate leaves, (Figs. 265, 455, 456.) 
1 F. Virginia’na. Common 8S. Bractlets under the calyx entire. Flowers white, on 
scapes. Root-stock sending out runners which take root and form new plants, 
2 F.In’dica. Indian Strawberry. Bractlets under the calyx 8-lobed. Petals yellow. 
Stems trailing on the ground. Fruit roundish, bright red, tasteless. S. + (272.) 
12. SPIR.AW’A. ._Meadow-sweet. Hard-hack. 
Calyx 5-cleft, persistent. Petals 5, roundish. Stamens 10-50, exserted. 
Carpels distinct, 3-12, forming little 1-celled, several-seeded pods. Styles 
terminal.—2¢ Beautiful, unarmed herbs or shrubs with alternate leaves 
and branches, and small white or rose-colored flowers. May, Aug. 
* Shrubs 4-9 f. high....a 
* Herbs with the leaves once or thrice pinnate....7 
a Stipules present....1, 2 
a Stipules none. Leaves simple and undivided....b 
¢g* 
