R O S 



HOT 



Dutch Hundred- icavcdj White, and most odier 

 sorts : and the latest sorts are tlie Virginia and 

 IVIusk Roses, which, if planted in a shady situa- 

 tion, seldom flower until September ; and, it' 

 the aiitimni proves mild, continue often till the 

 uiiddie of October. And the plants of the two 

 sorts of Musk Hoses should be placed against a 

 wall, pale, or other bu.ilding, that their branches 

 may be supported, otherw ise they arc so slender 

 and weak as to trail upon the ground. These 

 plants should not be pruned until spring, be- 

 cause .their branches are somewhat tender; so 

 that when they arc cut in w inter, they often die 

 after the knife; these produce their (lowers at 

 the extremity of the same year's shoots in large 

 bunches, so that their branches nuist not be 

 sjhorlened in the summer, lest the flowers should 

 ;be cut off. The shrubs will gro'.v to be teti or 

 twelve feet high,, and must not be checked in 

 tlieir growtli, if intended to flower well. They 

 .are all highly ornamental plants, mostly for the 

 ■shru.bbery borders and chunps, being planted 

 .according to their habits of growlli. 



ROSE-BAY. Sec Nkuium. 



ROSK, CAMPION. See Agrostemma. 



ROSE, CHINA. See Hibiscus. 



PiOSE. GUELDER. See Viburnum. 



ROSEMARY. See Rosmaiunus. 



ROSE of .lERICHO. Sec 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 Dlavdria 

 Monogijma, and ranks in ihe natural order uf 

 VertkUiatce. 



The characters are : that the calvx is a owt- 

 leafed perianth, tubular, ccuiipressed above ; 

 mouth upright, two-lipped: upper lip entire, 

 lower bilid : the corolla uncoual ; tube longer 

 than the calyx ; border ringent : upper hp two- 

 parted, upright, shorter, acute, with the edges 

 bent back : lower lip bent hack, trifid ; the 

 middle segment very large, concave, narrow at 

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

 mina have two aui-shancd 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 peric arpium : calyx 

 containing the seeds at the bottom : the seeds 

 four, ovale. 



The species are: I. 7i. officinalis, OfScinal 

 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, ])hiccd in w horls on the branches : 

 the flowers from the axils of the leaves, from 

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

 times ',\hite with blue spots and dots. It is a 

 ,naiive of the South of Europe, Sec, flowering 

 :f'roni January to Mav. 



There are varieties with narrow leaves ; with 

 broad leaves; with silver- striped leaves, and wiih 

 gold striped leaves. 



Culture. — In all the sorts it may be effected 

 by planting slips or cuttings in the early sprin;; 

 months as from March to May ; as well as h\ 

 layers, in performing the first methods of wdiicli, 

 a quantity of young shoots should be cut or strip- 

 ped otf from about five or six to eight or ten inches 

 long., sh'ippinc o'lf" the lower leaves, and then 

 planting them in a border of light earth, in rows 

 a foot asunder, giving a good watering and re- 

 rpcattng it frequently till they are rooted, which 

 thev cfrect in a short time, in the same ^car, 

 shoot at top, and become toler:able little plants 

 bv autumn ; when abo'.:t the beoinnino or middlr 

 of September, or in spring following, 'tliev may 

 be transplanted where they are designed to le- 

 inain for growth. 



The layers should be laid down in anv of the 

 convenient lower young branches, into tlie earth, 

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

 he well rooted by autumn following, when they 

 may be taken oft" and planted out where they are 

 to remain for plants. 



Almost all the varieties are moderately hardy 

 evergreen plants, though ih.e couimon crceu 

 sorts are the most so; the striped kinds Being 

 liable to suffer by h;ux] frosts, if much exposed, 

 or planted in wet ground, of course they as well 

 as all the sorts should have a warm situation and 

 dry soil : some of the variegated kinds should 

 also be potted, in order to have shelter of a 

 green-house in winter. They are most dura- 

 ble in dry poor soils. 



Thev afford variety in the border, clumps, and 

 other parts of gardens and shvubheries. 



ROYENA, a genus contaming plants of the 

 sbrubbv evergreen exotic kind for the green- 

 house. 



It belongs to the class and order Decandria 

 Digynia, and ranks in the natural order of Bi- 

 coriies. 



The characters are . that the calyx is a one- 

 leafed, piichcr-shapcd, five-cleft, permanent pe- 

 rianth : the corolla (■ne-petalled : tube the length 

 of the calyx: border spreading, revolute, the- 



