10(> ORDER 44. ROSACE.E. 



on a dry receptacle, and caudate with the persistent, mostly jointed, genie- 

 ulate and bearded style. If Leaves pinnately divided. 



SIEVERSIA. Style straight, jointless, all of it persistent. Flowers large. . .Noe. 1, 2 

 GEUM proper. Style bent and jointed in the middle, upper part deciduous. . . (a) 



a Head of fruits raised on a stipe. Flowers yellow or purple Nos. 8, 4 



a Head of fruits sessile (no stipe). b Flowers yellow Nos. 5. (3 



b Flowers white Xos. 7. S 



1 C. triflorum Ph. Villous, erect, about 3-flowered ; Ivs, mostly radical, interrupt- 

 edly pinnate, of numerous cuneate, iuciscly dentate, subequal Ifts.; bractlets linear, 

 longer than the sepals ; styles plumous, very long in fruit ('2 3'). N-W. States, rare 

 in the North. 812'. Flowers purplish-white. May. June. 



2* O. radlatum MX. Hirsute or smoothish ; stem erect, nearly leafless ; root Ivs. 

 lyrate, the terminal leaflet large, rcniform, lobed and toothed, lateral ones minute ; 

 bractlets minute; pet. obcordate, yellow, large; styles hairy a*- base. White Mts. 

 N. H., Roan Mt. N. Car. 9 15'. (G. Peckii Ph.) 



3 G vernum T. & G. Smoothish ; Ivs. pinnately divided, incisely lobed and toothed, 



the lowest often simple; fls. small, yellow; sep. reflexed ; torus conspicuously stipi- 

 tate. W. and S-W. 12 20'. Stipules large. April June. 



4 O. rivale L. Pubescent ; st. subsimple ; radical Ivs. lyrate ; stip. ovate, acute ; fls. 



nodding, purple; pet. as long as the erect cal. segments, purplish-yellow ; upper joint 

 of the persistent style plumous. Wet meadows, N. and M. 1 2f. June. 



5 G. strictum Ait. Hirsute ; Ivs. interruptedly pinnate ; Ifts. ovate, lobed and toothed ; 



pet. roundish, longer than the reflexed sepals ; torus densely pubescent. Fields, N. 

 States and Can. 2 3f. Terminal leaflet largest. July, August. 



6 G. macrophyllum Willd. Hispid; Ivs. interruptedly lyratc-pinnate, the termi- 



nal 1ft. much the largest, roundish cordate, 35', all unequally dentate ; petals longer 

 than the calyx ; recept. nearly smooth. White Mts. and Can. 1 2f. June, July. 



7 <J. album Gmel. Smoothish or pubescent ; root Ivs. ternate or often simple, upper 



Ivs. simple ; Ifts. ovate, lobed and dentate ; pet. as long as calyx ; torus white-bristly. 

 Thickets. Common. 2 3f. July. (G. Virginianum T. & G. &c.) (Sec Addenda.) 



8 r. Virginianum L. Hirsute ; Ivs. pinnate below, then ternate, the upper simple ; 



Ifts. incisely lobed, wedge-lanceolate, very acute, cut-toothed ; pet. shorter than calyx ; 

 torus nearly naked. Wet thickets. 2 3f. Stout. July. 



11. FRAG- ARIA, L. STRAWBERRY. Cal. concave, deeply 5-cleff, with 

 an equal number of alternate, exterior segments or bractlets. Pet. 5, 

 obcordate. Sta. oo. Sty. GO, lateral. Ach. smooth, affixed to a large, 

 pulpy, deciduous receptacle. If [^ Stems stoloniferous. Leaves trifoliate. 

 Fruit red. Flowers white, in Spring. Figs. 5, 117, 184, 251, 428. 



Bractlets entire ; petals white. Stemless, stoloniferous Nos. 1, 2 



DUCHESNIA. Bractlets 3-lobed ; petals yellow. Stems trailing No. 3 



1 F. Virginiana Ehrh. Pubescent; Ivs. thick; cal. of the fruit erect -spreading; 



acii. imbedded in pits in the globons receptacle ; ped. commonly shorter than the Ivs. 

 Fields and gardens. 6 12'. Some of its varieties are polygamo-dicecious. 

 /3. Illinotnsis. Larger, very villous in the stems. Prairies. Westward. 



2 F. vesca L. Alpine, Wood, or English Strawberry. Villons-pubescent ; cal. cf 



the fruit spreading or reflexed ; ach. superficial on the conical or hemispherical rec( p- 

 tacle, which is without pits ; Ivs. thin. Fields and woods. 



/3. pdllida. Fruit white. A var. well established in Wayne Co. N.Y. (Hankenson.) 

 8 F. Indica Ait. Pubescent, rooting at the joints; Ifts. ovate, obtuse, incisely cre- 

 nate-serrate ; stip. lanceolate, free ; pedicels axillary, solitary 1-flowcred ; bractlnta 

 leafy in fruit. V Damp places, Pcnn. and S. India. 



