304 ORDER XLIV. ROSACEA. 



ate, glandular, pubescent beneath ; leaflets ovate, acuminate, unequally 

 serrate, the terminal one petioled. Flowers in racemes, sepals linear- 

 acuminate. Petals spreading, obovate. Fruit black, large. — "White or 

 rose-color. If. May — June. Common. 3 — 8 feet. Blackberry. 



4. R. His'piDUS, (L.) Ste/n shrubby, slender, prostrate, covered with 

 retrorse prickles. Leaves persistent, 8 — 5-foliate ; leaflets somewhat 

 coriaceous, obovate, unequally serrate, glabrous. Flowers small, in co- 

 rymbs, with filiform pedicels. Sepals spreading half the length of tho 

 petals. Petals obovate. Fruit small, black, composed of large grains, 

 sour. — White. 2f. May — June. Mountains. 



5. R. trivia'lis, (Mich.) Stem shrubby, procumbent, sarmentose, 

 ai'med with prickles. Leaves 3 — 5-foliate ; leaflets ovate, or oblong- 

 lanceolate, acute, serrate, generally glabrou?. Flowers 1 — 3 on eacli 

 peduncle, large. Sepals reflexed, not half the length of the petals. 

 Petals obovate, broad. Fruit large, black. — White. U- March — 

 May. Common. Low-bush Blackberry. 



Var. Some of the leaves simple, obscurely 3-lobed, broad-ovate. 

 Flowers but 1 on each peduncle ; sepals seldom reflexed ; petals lance- 

 olate ; stem and young branches glabrous. 



6. R. cuneifo'lius, (Pursh.) Stem shrubby, erect, low, armed with 

 stout recurved prickles. Leaves trifoliate ; leaflets obovate, cuneate, 

 tomentose beneath, somewhat coriaceous, serrate toward the apex, with 

 re volute margins near the base. Flowers few on each peduncle. Sep- 

 als mucronate, oblong, tomentose. Petals obovate. Fruit black. — 

 White or rose-color. If. May — June. Common. 1 — 2 feet. 



The genus Ruhus aflFords fruit, which is much used for food, and is healthy and 

 agreeable when perfectly ripe. A jelly made from the fruit of the E. viUosus, com- 

 mon Blackberry, is much esteemed as an article of diet by patients suffering under 

 dysenteric affections. The root of this species is much valued in domestic practice in 

 the same diseases, and is considered by many as a certain remedy. The Faculty rec- 

 ommend it in such affections as require vegetable astringents. 



Genus XIY.— RO'SA. To urn. 11—12. 

 (From ros, red, Celtic.) 



Calyx 5-cleft, tube urceolate, contracted at the summit, in- 

 closing several distinct ovaries. Carpels 1 -seeded, hairy, inde- 

 hiscent. Shrubby plants, with pinnate leaves, with stipules 

 adhering to the petiole. 



1. R. Caroli'na, (L.) Stem erect, branching, branches red, armed 

 with stout prickles. Leaves pinnate, leaflets 5 — 9, large, oblong, lance- 

 olate, acute, serrate, pubescent beneath. Flowers in corymbs, on short 

 glandular peduncles. Calyx glandular, hispid. Petals obeordate. 

 Fruit g\ohoiQ. — Reddish, if. July. In wet grounds, 4 — 6 feet. 



Swamp Rose 



2. R. Lu'ciDA, (Ehrh.) Stems glabrous, erect, colored, armed with 

 setaceous prickles. Leaflets 5 — 9, ovate-lanceolate, obtuse, serrate, gla- 

 brous and shining above, pubescent on the under surface. Flowers ir 

 corymbs, generally 3 ; segments of the calyx foliaceous, glaudular-pu 

 bescent, longer than the corolla. Petals obeordate. Fruit red, globose. 

 —Reddish. If. May — June. Common. 1 — 3 feet. 



3. R. parviflo'ra, (Ehrh.) Stem glabrous, dotted, branches genicu 



