R O S 



ROY 



Dutch Hundred-Cleaved, While, and most other 

 sorts : and the latest sorts are the Virginia ami 

 Musk Roses, which, it' planted in a shady situa- 

 tion, seldom flower until September; and, if 

 the autumn proves mild, continue often til! the 

 middle of October. And the plants Of the two 

 sorts of Musk Hosts should be placed against a 

 wall, pale, or other building, that their branches 

 mav be supported, otherwise they are so slender 

 and weak ps to trail upon the ground. These 

 plants should not be pruned until spring, be- 

 cause their blanches are somewhat tender; so 

 that when rhey are cut in winter, they often die 

 after the knife; these produce their Mowers at 

 the extremity of the same year's shoots in large 

 bunches, so that their branches must not be 

 shortened in the summer, lest the flowers should 

 be cut off The shrubs will grow to he ten or 

 twelve feet high, and must not he checked in 

 their growth, if intended to flower well. They 

 are all highly ornamental plants, mostly for the 

 shrubbery borders and .clumps, being planted 

 according- to their habits of growth. 



ROSE-BAY. SeeNEiuuM. 



ROSE, CAMPION. See Agrostemma. 



ROSE, CHINA. See Himscus. 



ROSE, GUELDER, See Viburnum. 



ROSEMARY. See Rosmarinus. 



ROSE of JERICHO. See Anastatica. 



ROSE, ROCK. See Cistus. 



ROSE, ROOT. See Rhodiola. 



ROSMARINUS, a genus containing plants 

 of the hardy shrubby evergreen kind. 



It belongs to the class and order Diaiidria 

 Monogynia, and ranks in the natural order of 

 Vertinllatce. 



The characters are : that the calyx is a one- 

 leafed perianth, tubular, compressed above : 

 mouth upright, two-lipped: upper lip entire, 

 lower bifid : the corolla unequal : tube longer 

 than the calyx ; border ringent : upper lip two- 

 parted, upright, shorter, acute, with the edges 

 bent back : lower lip bent back, trifid ; the 

 middle segment very large, concave, narrow at 

 the base; the lateral ones narrow, acute: the sta- 

 mina have two awl-shaped filaments, simple 

 with a tooth, inclined towards and longer than 

 the upper lip.. Anthers simple : the pistillum 

 is a four-cleft germ : style of the same figure, 

 situation and length with the stamens: stigma 

 simple, acute : there is no periearpiuni : calyx 

 containing the seeds at the bottom : the seeds 

 four, ovate. 



The species are: I. R. njfficwalis, Officinal 

 Rosemary. 



It has a strong woody fibrous root. The 

 stem shrubby, covered with a rough gray bark, 

 divided into many branches, and in gardens 



rising frequently to the height of eight or ten 

 feet; but in its natural state much lower. The 

 leaves numerous, sessile, linear, entire, blunt, 

 contracted at the edges, dark green above, gray- 

 ish or whitish underneath, with small glandular 

 excavations, placed in whorls on the branches : 

 the (lowers from ihe axils of the leaves, from 

 six to twelve together, larye, pale blue, some- 

 times w liite with blue spots and dots. It is a 

 native of the South of Europe, &c., flowering 

 from Jamuirv to May. 



There are van'-ues with narrow leaves ; with 

 broad leaves; with silver- striped leaves, and with 

 gold striped leave,. 



Culture. — In ;.l! the sorts it may be effected 

 by planting slips Or cuttings in the early spring 

 months as from March to May ; as well as by 

 layers, in performing the first methods of which, 

 a quantity of yotmg shoots should be cut or strip- 

 ped otffrom about five or six to eight or ten inches 

 long, stripping off the lower leaves, and then 

 planting them in a border of light earth, in rows 

 a foot asunder, giving a good watering and re- 

 peating it frequently till they are rooted, which 

 thev effect in a short lime, in the same vear, 

 shoot at tup, and b -come tolerable little plants 

 by autumn; when about the beginning or middle 

 of September, or in Spring following, they may 

 be transplanted where they are designed to re- 

 main for growth. 



The layers should be laid down in any of the 

 convenient lower young blanches, into the earth, 

 in the spring, summer, or autumn, and they will 

 be welt rooted by autumn following, when they 

 may be taken off and planted out where they are 

 to remain for plants. 



Almost all the varieties are moderately Bardy 

 evergreen plants, though the common green 

 sorts are the most so; the striped kinds being 

 liable to suffer by hard frosts, if much exposed, 

 or planted in wet ground, of course they as well 

 as all the sorts shouid have a warm situation and 

 dry soil : some of the variegated kind? should 

 also be potted, in order to have shelter of a 

 green-house in winter. They are most dura- 

 ble in dry poor soils. 



They afford variety in the border, clumps, and 

 other parts of gardens and shrubberies. 



ROYENA, a genus containing plants of the 

 shrubby evergreen exotic kind for the green- 

 house. 



It belongs to the class and order Decandr'ia 

 Digynia, and ranks in the natuial order of Be- 

 comes. 



The characters are. that the calyx is a one- 

 ieafed, pitcher-shaped, fivc-cle.tt, permanent pe- 

 rianth : the corolla one-petalied : tube the length 

 of the calyx: border spreading, revolutc, five- 



