ROMNE Y A ROS A 41 5 



R. COULTERI, Harvey. 



(The Garden, Nov. 8, 1884.) 



A semi-shrubby plant, with succulent herbaceous stems 4 to 8 ft. high, 

 according to the mildness of the climate in which it grows. Leaves varying 

 much in size according to the strength of the shoot which bears them, but 

 averaging from 3 to 5 ins. long, and of a very glaucous colour; they are obovate 

 to pinnately lobed,'the end lobe usually much the largest and itself more or 

 less lobed, smooth except for a few spine-like bristles on the stalk and midrib. 

 Flowers solitary or in pairs, terminating short twigs near the end of the stem, 

 each one 4 to 5 ins. across, with five or six overlapping, satiny-white, delicately 

 textured petals surrounding a mass of golden yellow stamens I to \\ ins. 

 across. Calyx smooth. 



This beautiful plant, discovered in California by Dr Coulter in 1844, is not 

 hardy in all situations, but is well worth the protection it requires. Perhaps 

 in localities where it is not absolutely hardy the best place for it is in front of 

 a south or west wall, where the shelter of a glass light or something of the 

 kind can be given in winter. Treated in this way I have seen it thriving 

 splendidly as far north as Chester. It should have a warm, well-drained 

 loamy soil, and abundant moisture during the growing season. It is not 

 easily increased by cuttings of the stems, but its thick fleshy roots afford a 

 ready means. They should be cut up into lengths of about 2 ins., placed in 

 pots, and just covered with sandy soil. A mild heat is desirable. The roots 

 of old plants send up young shoots, and these also may be removed, potted, 

 and given warmth. So sensitive to injury is this plant at the root that young 

 plants should be kept in pots until put out in permanent quarters. It flowers 

 from July to October. 



R. TRICHOCALYX, Eastwood. 

 (Bot. Mag., t. 8002.) 



A shrub not distinguishable in stem and leaf characters from the pre- 

 ceding, but at once recognised when in flower by the bristly hairs on the 

 calyx. The flowers are the same in size and colour. Until 1^98, this species 

 was confused with R. Coulteri, and no doubt the two are very closely related. 

 It is a better plant for colder situated gardens, being of hardier constitution, 

 not so gross in habit, and cultivated with less trouble. At Kew it 

 thrives very well in a border on the south side of a glasshouse, without 

 other protection than that gives. It can be increased by cuttings of the 

 stem taken from ripe shoots and put in gentle heat. It appears to have been 

 first noticed in flower in the garden of Mr Hiatt C. Baker, of Almondsbury, 

 near Bristol, in 1902. 



ROSA. ROSE. ROSACES. 



In the great natural order of Rosaceae, which gives to gardens more 

 beautiful hardy deciduous trees and shrubs than any other, no genus 

 stands out with greater distinctness than the one from which it derives 

 its name. The leading characters of ROSA are its usually very thorny 

 stems, the alternate pinnate leaves, the stipules (except* in a few species) 

 joined to the base of the leaf-stalk, the numerous stamens and carpels, 

 and the rounded or elongated fruit, which is really a fleshy development 



