212 ROSACEA. Fragaria. 



Rhizoma short, throwing up a tuft of leaves and scapes, and producing numerous long 

 slender stolons,' which become new plants. Leaflets broadly oval or obovate, 1-2 inches or 

 more in length, smoothish above, slightly hairy underneath : petioles 2-6 inches long, vil- 

 lous ; the hairs appressed, spreading or reversed. Scapes 4 - 7-flowered, sometimes forked 

 at the summit, and then bearing a large foliaceous bract or leaflet at the bifurcation ; the 

 direction of the hairs variable. Calyx hairy : segments ovate, acuminate : bracteoles a little 

 shorter, linear-lanceolate. Petals roundish, a little longer than the calyx. Receptacle usually 

 roundish-ovoid, sometimes rather conical, scarlet ; the pits on its surface so deep that the 

 achenia are more than half imbedded. 



Fields and rocky places ; common in most parts of the State, but rare in the neighborhood 

 of New-York and on Long Island. April - June. 



2. Fragaria vesca, Linn. Wild Straivherry. 



Fruit conical or hemispherical, the achenia superficial ; calyx much spreading or reflexed 

 in fruit ; peduncles commonly longer than the leaves. — Engl. hot. t. 1524 ; Pursh, fl. 1. 

 p. 357 ; DC. prodr. 2. p. 569 ; Hook. fl. Bor.-Am. 1. p. 184 ; Torr. ^ Gr. fl. N. Am. 1. 

 p. 448. 



Resembles the preceding, but produces fewer and less slender runners, the leaves with 

 smaller serratures ; the flowers are nearly twice as large, the segments of the calyx narrower, 

 and the fruit especially difiers in the achenia not being immersed in little pits upon the surface. 



Fields and meadows, and sometimes on rocks ; very common around New-York, on Long 

 Island, and in the valley of the Hudson, but also found in most other parts of the State, 

 generally confounded with the preceding under the name of Wild Strawberry. It seems to 

 be indigenous. 



Subtribe 4. Dalibarde.c, Torr. & Gr. Calyx flatfish, 5-parted, mostly imbricate in cestiva- 

 tion. Petals deciduous. Stamens numei'ous, inserted into the border of the disk. Carpels 

 few, dry, and seated at the bottom of the calyx ; or drupaceous, juicy, and crowded on 

 a conical receptacle : ovules 2, collateral : styles terminal or nearly so. Seed suspended. 

 Radicle superior. — Herbaceous or mostly somewhat shrubby, often prickly plants. 



13. DALIBARDA. Linn.; Richard in Nestl. Pot. p. 16. t. 1 ; Endl. gen. 6359. 



DALIBAJiDA. 



[ In honor of Denis Dalibard, a French botanist of the last century.] 



Calyx concave at the base, deeply 5 - 6-parted, without bracteoles ; the segments imbricated 

 in aestivation ; 3 of them larger, and 3 - 5-toothed or serrate. Petals 5, sessile. Ovaries 

 5-10. Achenia dry ; the endocarp cartilaginous, sessile in the bottom of the calyx. — 

 Small perennial herbs, with creeping stems and simple roundish-cordate leaves. Scapes 

 1 - 2-flowered. Petals white. 



