1 W. fragarioides Traut. Lvs. trifoliate; lfts. broad-cuneiform, incisely den-tate-crenate, ciliate; scapes bracteate, many-flowered; cal. tube obconie. - A handsome plant, in hilly woods, Can. to Ga., bearing some resemblance to the. strawberry. Rhizome thick, scaly, blackish. Petioles 3 to 6' long, slightly pubescent. Lfts. 1 to 2' diam., nearly sessile, dark, shining green above. apex. rounded and cut into lobes and teeth. Scape about as high as the lvs., divided at top, bearing 2 to 6 flowers 1/2' diam. Petals varying from 5 to 10. Jn.
2 W. lobata Torr. & Gr. Lvs. simple, roundish, cordate, 3 to 5-lobed, incisely crenate; scapes filiform, bracted, 3 to 7-flowered; cal. tube narrow. - Hills, Ga
(Bainbridge, Columbus). Plant hairy, about 6' high, from a slender rhizome Achenia about 2. Petals scarcely as long as the sepals. Apr. - Jn. (Dalibards lobata Baldw.)
22. FRAGA'RIA, L. Strawberry. (Lat. fragrans, fragrant.) Calyx concave, deeply 5-cleft, with an equal number of alternate, ex terior segments or bractlets; petals 5, obcordate, stamens ∞; style;; 00; lateral, achenia smooth, affixed to a large, pulpy, deciduous receptacle. - Sts. stoloniferous. Lvs. trifoliate. Fr. red.
§ Bractlets entire; petals white. Stemless, stoloniferous........................
Nos. 1, 2
§ DUCHESNIA. Bractlets 3-lobed; petals yellow. Stems trailing..........................
1 F. Virginiana Ehrh. Pubescent; cal. of the fr. erect, spreading; ach. imbedded in pits in the globous receptacle; ped. commonly shorter than the lvs. - Fields and woods, U. S. and Brit. Am. Stolons slender, terete, reddish, often 1f or more long, rooting at the ends. Petioles radical, 2 to 6' long, with spreading hairs. Lfts. 3, oval, obtuse, coarsely dentate, subsessile, lateral ones oblique. Scape less hairy than the petioles, cymous at top. Flowers Mar. - May. Fr. May - Jl., highly fragrant and delicious when ripened in the sun.
2 F. vesca Linn. Alpine, Wood, or English Strawberry. Pubescent; cal. of the fr. much spreading or reflexed; ach. superficial on the conical or hemispherical receptacle which is without pits, ped. usually longer than the leaves. - Fields and woods, N. States, etc. Stolons often creeping several feet. Lvs. pubescent, and fls. as in F. Virginiana. - Numerous varieties are cultivated in gardens where the fruit is sometimes an ounce or more in weight. - Fl. Apr., May. Fr. Jn., Jl.
3 F. Indica Ait. Pubescent, trailing, rooting at the joints; lfts. ovate; obtuse, incisely crenate-serrate; stipules lanceolate, free; pedicels axillary, solitary 4-flowered; bractlets about equaling the petals, enlarging and leafy in fruit-
Escaped from cultivation, now common everywhere from Charleston. S. C. to Tallahassee, etc. The large crimson, oval fruit is quite ornamental but insipid. Ripe in May and Jn. § India. (Duchesnia Indica Smith. Potentilla Durandn T. & G.)
. 23. CO'MARUM, L. (Gr. the strawberry tree, which this plant resembles.) Calyx flat, deeply 5-cleft, with bractlets alternating with the segments; petals 5, much smaller than the sepals; stamens numerous, inserted into the disk; achenia smooth, crowded upon the enlarged, ovate, spongy, persistent receptacle. - Lvs. pinnate. Fls. purple.
C. palustre L. In sphagnous swamps, N. States, Wise, to the Arc. Circ. Sts.
creeping at base, 1 to 2f high, nearly smooth, branching. Lfts. 3, 5 and 7, crowded, 1 1/2 to 2 1/2' long, 1/3 as wide, oblong-lanceolate, hoary beneath, obtuse, sharply serrate, subsessile; petiole longer than the searious, woolly, adnate stipules at base. Fls. large. Gal. segm. several times larger than the petals. Petals about 3" long, ovate-lanceolate, and, with the stamens, styles, and upper surface of the sepals, dark purple. Fr. permanent. Jn.
24. POTENTIL'LA, L. Cinquefoil. (Lat. potentia, power; in allusion to its supposed potency in medicine.) Calyx concave, deeply 4 to 5-cleft; with an equal number of alternate, exterior segments or bract-lets; petals 4 to 5, roundish; stamens ∞; filaments slender; ovaries collected into a head on a small, dry receptacle; styles terminal and lateral, deciduous; achenia ∞. - Herbaceous or shrubby. Lvs. pin-nately or palmately compound. Fls. solitary or cymous, mostly yellow.
* Leaves palmately 3-foliate...............................................
Nos. 1 - 3
* Leaves palmately 5-foliate.......................................................
Nos. 4 - 6
* Leaves pinnate. - Shrubs with axillary pedicels......................................
- Herbs with axillary pedicels...................................
Nos. 8, 9
- Herbs with terminal cymes.......................................
Nos. 10, 11
P. Norvegica L. Hirsute; st. erect, dichotomous above; lfts. 3, elliptical of obovate, dentate-serrate, petiolulate; cymes leafy; cal. exceeding the emarginate pelals. - Old fields and thickets, Arc. Am. to Car. Sts. 1 to 4f high, covered with silky hairs, terete, at length forked near the top. Cauline petioles shorter than the lvs., lfts. 1/2 to 1 1/2' by 1/4 to 1/2 (lower and radical ones very small), often incised. Stip. large, ovate, subentire. Fls. many, crowded, with pale yellow petals, shorter than the lanceolate, acute hairy sepals. Jl. - Sept.
β. HIRSUTA T. & G. Hairs loose, silky; st. slender, erect, subsimple, lower and middle lvs. equal, long-petiolate, lfts. roundish-obovate, sessile, incisely dentate; fls. few; petals rather conspicuous, nearly as long as the calyx.- Dry fields. (P. hirsuta Mx.)
2 P. tridentata Ait. Smooth; st. ascending, woody and creeping at base; lfts. 3, obovate-cuneate, evergreen, entire, with 3 large teeth at the apex; cymes nearly naked; petals white, obovate. - On the White Mts. and other Alpine summits in the N. States. Flowering sts. 6 to 12' high, round, often with minute, oppressed hairs. Petioles mostly longer than the leaves. Lfts. sessile, 9 to 18" by 4 to 6", coriaceous, smooth. Petals twice longer than the cal. Carp. and ach. with scattered hairs. Jn., Jl.
3 P. minima Haller. St. pubescent, ascending, mostly 1-flowered; lvs. trifoliate, lfts. obovate, obtuse, incisely serrate, with 5 to 9 teeth above; petals yellow, longer than the sep. - Alpine regions of the White Mts. Sts. numerous and leafy, 1 to 3' high. Lfts. with the margins and veins beneath hairy. Fls. small Petals obcordate. Bractlets oval-obtuse, narrow at the base. Jn. - Jl.