106 ORDEB 44. ROSACES. 



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

 tdate and bearded style. U 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 NOB. 3, 4 



a Head of fruits sessile (no stipe). b Flowers yellow Nos. 5, 6 



b Flowers white Nos. 7, 8 



1 G. triflornm Ph. Villons, erect, about 3-flowered ; Ivs. mostly radical, interrupt- 

 edly pinnate, of numerous cuneate, incisely dentate, snbequal Ifts. ; bractlets linear, 

 longer than the sepals ; styles plumons. very long in fruit (230. N-W. States, rare 

 in the North. 8 12'. Flowers purplish-white. May, June. 



2. G. radiatum MX. Hirsute or smoothish ; stem erect, nearly leafless ; root Ivs. 

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

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

 N. H., Eoan Mt. N. Car. 9-15'. (Q. 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 2(X. Stipules large April June. 



4 G. rtvale 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. macropnyllum Willd. Hispid; Ivs. interruptedly lyratc-pinnate, the termi- 



nal 1ft. much the largest, roundish cordate, 3 5', all unequally dentate ; petals longer 

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



7 G. 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.) (See Addenda.) 



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



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

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



11. FRAGARIA, L. STRAWBERRY. Cal. concave, deeply 5-cleft, with 

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

 obcordate. Sta. GO. 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 erecl -spreading; 



acu. imbedded in pits in the globous receptacle ; ped. commonly shorter than the Ivs. 

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

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



2 F. vesca L. Alpine, Wood, or English Strawberry. Villous-pubescent ; cal. of 



the fruit spreading or reflexed ; ach. superficial on the conical or hemispherical recep- 

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



/5. ptiUida. 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 ere 

 nate-serrate ; stip. lanceolate, free ; pedicels axillary, solitary 1-flowered ; bractletg 

 leafy in fruit, v Damp places, Penn. and S. India. 



