RON 



R O S 



The seeds should be sown about the end of 

 March or beginning ot the tollowing month, 

 on a bed of hght mould, being covered to the 

 depth of about half an inch. In the first sort 

 and varieties the plants mostly appear in the 

 course of six or eight weeks; but in the other 

 kinds often not till the next spring. They should 

 be well weeded and watered, and when suffi- 

 ciently strong beset out in the spring or autumn 

 in nursery-rows, for two or three years, in order 

 to remain to have proper growth for final plant- 

 ing out. 



The cuttings should be made from the young 

 shoots, and planted out in the beginning of au- 

 tumn, in a sliady border where the soil is mel- 

 low. They are mostly well rooted in the course 

 of a twelvemonth, when they may be removed 

 into nurserv-rows as above. 



The layers should be made from the young 

 wood, being laid down in the autunm, when in 

 the course of the year they mostly become well 

 rooted, and may be taken off and planted out in 

 nursery-rows as the seedling plants. 



The suckers, which are produced in plenty 

 from the two first sorts, which may be removed 

 in the early autumn or spring, and planted out 

 in nursery-rows or in beds, to be afterwards re- 

 moved into them. 



The two last, or lender sorts, may likewise be 

 raised from seeds and cuttings, but they must 

 be sown and planted in pots, filled with good 

 mould, to have the assistance of a hot-bed in the 

 stove, by being plunged in it. When the 

 plants have attained a little growth, they should 

 be shaken out of the pots, and planted separately 

 in small pots, filled with the same sort of earth, 

 plunging them in the tan-bed, affording due 

 shade till well rooted, managing them afterwards 

 as other tender stove plants. 



The plants are most lender while young; they 

 should therefore be kept in the stove tan-bed 

 till they have acquired strength, when they may 

 be preserved in the dry stove, .with a temperate 

 heat in winter, and be exposed in the open air 

 in sunmier, in a warm sheltered situation when 

 •he weather is fine. 



The hardy sorts have a fine effect in the border 

 clumps and other parts of pleasure-grounds, and 

 the tender kintls afford variety in the stove col- 

 lections. 



ROBINSONCRUSOE'sCOAT. SeeCACTus. 



ROCAMBOLE. Sec Allium. 



ROCK-ROSE. See Cistus. 



RONDELETIA, a genus containing plants 

 of the woody exotic stove kind. 



It belongs' to the class and order Ptntandria 

 jllortogj/nia) and ranks in the natural ordef of 

 Riibiacece, 



The characters are : that the calyx is a one- 

 leafed perianth, superior, five-parted, acutc^ 

 permanent : the corolla one-petalled, funnel- 

 shaped : tube cylindrical, longer than the calvx, 

 bellying a little at top: border five-parted, from 

 reflex flat ; segments roundish : the stamina 

 have five awl-shaped filaments, almost the 

 length of the corolla : anthers simple; the pis- 

 tillum is a roundish, inferior germ : style fili- 

 form, the length of the corolla : stigma bifid : the 

 pericarpium is a roundish capsule, crowned, 

 two-celled : the seeds several, or sometimes so- 

 litary. 



The species chiefly cultivated is R. Americana, 

 American Rondeletia. 



It rises with a woody stalk ten or twelve feet 

 high, branching out on every side ; the branches 

 covered with a smooth greenish bark : the leaves 

 are oblong, ending in acute points, entire, the 

 upper surface lucid green, the under pale ; they 

 are a little crumpled, and stand alternate : the 

 flowers come out in bunches at the end of the 

 branches, are white, and have little scent. They 

 appear in autumn, but are not followed by seeds 

 in this climate. 



Culture. — This plant may be increased by 

 sowing the seeds on a moderate hot-bed in the 

 early spring, and when the plants have attained 

 a little growth they should be removed into se- 

 parate pots, being plunged in the bark-bed of 

 the stove, where they are to remain and be ma- 

 naged as other tenfler exotic plants of a similar 

 kind. 



They afford variety in stove collections. 



ROSA, a genus containing plants of the de- 

 ciduous flowering shrub and evergreen kind. 



It belongs to the class and order Icosandria 

 Pohjgynia, and ranks in the natural order of 

 ScnticoscB. 



The characters are : that the calyx is a one- 

 leafed perianth : tube ventricose, contracted at 

 the neck; with the border spreading live-parted, 

 globular: segments lonsr, lanceolate-narrow (in 

 some of them two alternate ones appendicled on 

 both side<; two others, also alternate, naked on. 

 both sides ; the fifth appendicled on one sidc- 

 only) : the corolla has five petals, obcordate, . 

 the length of the calyx, inserted • into the neck 

 of the calyx : the stamina have very many fila- 

 ments, capillary, very short, inserted into the 

 neck of the calyx : anthers three-cornered : the 

 pistillum has mmierous germs, m the bottom of 

 the calyx : styles as many,, villose, very short, . 

 compressed close by the neck of the calyx, in- 

 serted into the sidfi of the germ : stigmas blunt: 

 there is no pericarpium : is a fleshy berry, tur- 

 binate, coloured, soft, one-celled, crowned with 

 the rude segments, contracted at the ncck,. 



