304 ORDER XLIV. ROSACEA. 



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

 serrate, the terminal one petiolecl. Flowers in raceme?, 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.) Stem shrubby, slender, prostrate, covered with 

 retrorse prickles. Leaves persistent, 3 — 5-foiiate ; leaflets somewhat 

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

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

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

 sour — White. If. May — June. Mountains. 



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

 armed with prickles. Leaves 3 — 5-foliate ; leaflets ovate, or oblong- 

 lanceolate, acute, serrate, generally glabrous. Flowers 1 — 3 on each 

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

 Petals obovate, broad. Fruit large, black. — White. If. March — 

 May. Common. Low-bush Blackberry. 



Yak. 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 

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

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

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



The genus Iiubus affords fruit which is much used for food, and is healthy and 

 agreeable when perfectly ripe. A jelly made from the fruit of the R. villo>iu\ com- 

 mon Blackberry, is mudi 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 XIV.— RO'SA. Tourn. 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 obcordate. 

 Fruit globose. — Reddish. 2/.. 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, glandular-pu 

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

 —Reddish. 2£. May — June. Common. 1 — 3 feet. 



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



