ADDITIONS. 



To Obder 39. ROSACEA, after Dalibarda, page 103, add 



Tribe III. FragariEjE. — The Strawberry Tribe. 



POTENTILLA, Linn. Cinque-foil. Five-Finger, 



Lat. potens, in allusion to its supposed medicinal virtues. 



Calyx deeply 5-cleft, with 5 bractlets at the sinuses, ap- 

 pearing 10-cleft. Petals 4 or 5, roundish or inversely 

 heart-ehaped, deciduous. Stamens numerous. Achenia 

 many, collected in a head on the hairy receptacla. — Herbs, 

 or rarely shrubs, with compound leaves } a>id solitary or cy- 

 mose flowers. 



• Leaves palmate : leaflets 3 to 5 : flowers yellow. 



1. P. Canadensis,!*. Common Cinque-foil or Five-finger, 



Hairy or pubescent, procumbent and ascending, producing runners ; peduncles 

 axillary, elongated, 1-ftowered ; leaflets 5, oblong or obova-te-wedge-form, cut-toothed 

 towards the apex ; petals longer than the calyx. 



Dry fields, among grass, very common. April — Oct. Per. Stems at length 12 

 to 18 inches long. Leaves white villous when yo'ung. Flowzrs yellow. A very 

 variable species, embracing several varieties. Var. 1. PUMiLAis a dwarf early 

 flowering state in sterile soil. Tar. 2. simpl&x is a tailor and greener state, witu 

 Blender ascending stems. (P. simplex, Afichx.) 



2. F. ARGENTEA, L. Silvery Cinque-foil. 



Low; stems ascending, cymose at the summit, many-flowered, white-woolly; 

 leaflets 5, wedge-oblong, almost pinnatifid, entire towards the base, with revolute 

 margins, green above, silvery-white-woolly beneath; petals longer than the calyx. 



Dry barren fields. June— Sept. Per. Stems 4 to 10 inches long, somewhat 

 woody at base, at length with slender branches. Leaflets % to ^inoh by Y& w i tu 

 2 or 3 slender spreading teeth on each side; upper ones linear entire. Flowers 

 small, yellow. 



3. P. Noryegica, L. Norway Cinque-foil. 



'Hairy, erect, forked above, many -flowered; leaflets 3, obovate-oblong, coarsely 

 exit-serrate ; calyx longer than tha petals; achenia wrinkled or ribbed. 



Old fields and pastures. July— Sept. Ann. or Bien. Stem 1 to 2 feet high, 

 hirsute, at length more or less branched. Lower leaves on petioles 1 to 4 incbea 

 long. Flowers pale yellow, in leafy corymbs at the top, and on long solitary p«- 

 duncles below. 



• * Leaves odd-pinnate : flowers yellow. 



4. P. ARGUTA, Pursh. Close-flowered Cinque-foil. 



Stem erect, tall and stout, brownish-hairy, clammy towards the summit ; leaves 

 pinnate, the lowest 7 to 9, the upper 3 to 7-foliate ; leaflets oval or ovate, incised or 

 doubly serrate, downy underneath ; flowers cymose-clustered. 



Rocky hills and banks. July. Per. Stem mostly simple, 2 to 4 feet high, 

 Radical leaves 1 foot or more long. Leaflets 1 to 2 inches long, % as wide, seggue- 

 Flowers about % inch in diameter, yellowish-white. 



V2 



