2. F. vésca, L. _Achenes superficial on the glabrous conical or hemispherical fruiting receptacle_ (not sunk in pits); calyx remaining spreading or reflexed; hairs on the scape mostly widely spreading, on the pedicels appressed; _leaflets thin_, even the upper face strongly marked by the veins.--Fields and rocky places; less common. (Eu.) F. ÍNDICA, L., differing from the true strawberries in having leafy runners, a calyx with incised leafy bractlets larger than the sepals, _yellow petals_, and _insipid fruit_, has become somewhat established near Philadelphia and in the S. States; an escape from cultivation. Flowers and fruit produced through the summer and autumn. (Adv. from India.) 10. POTENTÍLLA, L. CINQUE-FOIL. FIVE-FINGER. Calyx flat, deeply 5-cleft, with as many bractlets at the sinuses, thus appearing 10-cleft. Petals 5, usually roundish. Stamens many. Achenes many, collected in a head on the dry mostly pubescent or hairy receptacle; styles lateral or terminal, deciduous. Radicle superior.--Herbs, or rarely shrubs, with compound leaves, and solitary or cymose flowers; their parts rarely in fours. (Name a diminutive from _potens_, powerful, originally applied to P. Anserina, from its once reputed medicinal powers.) § 1. _Styles thickened and glandular toward the base; achenes glabrous, numerous; inflorescence cymose._ [*] _Style nearly basal; stamens 25--30; perennial glandular-villous herbs, with pinnate leaves, and rather large white or yellow flowers._ 1. P. argùta, Pursh. Stems erect, usually stout (1--4° high), brownish-hairy, clammy above; leaflets 7--11, oval or ovate, cut-serrate, downy beneath; cyme strict and rather close; stamens mostly 30, on a thick glandular disk.--Rocky hills, N. Brunswick to N. J., Minn., Kan., and westward. [*][*] _Style terminal; flowers small, yellow; leaves pinnate or ternate._ [+] _Annual or biennial; leaflets incisely serrate, not white-tomentose; stamens 5--20._ 2. P. Norvégica, L. _Stout, erect, hirsute_ (½--2° high); _leaves ternate_; leaflets obovate or oblong-lanceolate; _cyme rather close_, leafy; _calyx large_; stamens 15 (rarely 20).--Lab. to N. J., west to Minn. and Kan. (Eu.) 3. P. rivàlis, Nutt. _More slender and branched, softly villous; leaves pinnate, with two pairs of closely approximate leaflets, or a single pair and the terminal leaflet 3-parted_; leaflets cuneate-obovate or -oblong; _cyme loose, often diffuse_, less leafy; _calyx small_; petals minute; stamens 10--20 (rarely 5).--Neb. to Mo. and N. Mex., and westward. Var. millegràna, Watson. Leaves all ternate; stems erect, or weak and ascending; achenes often small and light-colored.--Minn. to Mo., N. Mex., and westward. Var. pentándra, Watson. Leaves ternate, the lateral leaflets of the lower leaves parted nearly to the base; stamens 5, opposite to the sepals.--Iowa, Mo., and Ark.