VOL. II.] 



ROSE FAMILY. 



3. Fragaria vesca L/. European Wood 

 Strawberry. (Fig. 1910.) 



Fragaria vesca L. Sp. PI. 494. 1753. 



Stout, tufted, dark- green, generally less vil- 

 lous than the two preceding species. Leaflets 

 ovate or broadly oval, obtuse, dentate, broader 

 but nearly or quite as thick, the terminal one 

 cuneate, the others inequilateral at the base; 

 scape commonly exceeding the leaves, so that 

 the fruit is borne above them, sometimes 12' 

 high, its hairs mostly spreading; calyx-lobes re 

 maining spreading or sometimes reflexed; fruit 

 red, hemispheric or conic, the achenes borne 

 on its smooth and nearly even surface. 



In fields and along roadsides. Naturalized from 

 Europe in the Eastern and Middle States. April- 

 June. 



Fragaria Americana (Porter) Britton. American Wood Strawberry. 



(Fig. 1911.) 



Fragaria vesca var. Americana Porter, Bull. 

 Torr. Club, 17: 15. 1890. 



Fragaria Americana Britton, Bull. Torr. Club, 

 19: 222. 1892. 



Slender, light green, loosely villous- pubes- 

 cent or glabrate, producing runners more 

 freely than any of the three preceding spe- 

 cies. Leaflets thin, ovate or oval, obtuse or 

 acute at the apex, sharply incised-dentate, 

 the terminal one commonly cuueate, the 

 others inequilateral at the base, pubescent 

 with silvery appressed hairs beneath; flow- 

 ers smaller than in F. vesca; calyx-lobes 

 spreading or reflexed in fruit; fruit ovoid or 

 elongated -conic, light red or pink, the 

 achenes borne on its glabrous shining even 

 surface and but slightly attached to it. 



In rocky woods, Pennsylvania and New Jer- 

 sey to Ontario and New Brunswick, west to 

 Oregon. May-June. 



8. DUCHESNEA J. E. Smith, Trans. Linn. Soc. 10: 372. 1811. 



Perennial herbs, with trailing branches often rooting at the nodes (leafy runners), 3- 

 foliolate long-petioled leaves and axillary slender-peduncled yellow perfect flowers. Calyx 

 5-parted, 5-bracteolate, the bractlets larger than the calyx-segments and alternating with 

 them, dentate or incised, often regarded like those in Fragaria and Potentilla as an exterior 

 calyx. Petals 5, obovate. Stamens numerous. Pistils numerous, borne on a hemispheric 

 receptacle which greatly enlarges but does not become pulpy in fruit. Achenes superficial 

 on the receptacle. [In honor of A. N. Duchesne, French botanist.] 



Two species, natives of southern Asia. 



