Rocambole 



( 280 ) 



Rockery 



revoluta, sophorarfolia, 

 and stricta.] 



viscosa, '20' to 40', My., 

 ro. (syn. glutiuosa). 



[Other forms of Pseud- 

 acacia are bella-rosea, 

 coluteoides, elegans, 

 heterophylla, linearis, 

 monophy lla, Rehderi , 



Other Species and Varieties : 

 coccinea (now Ormosia - luxurians, sometimes 



coccinea). blooms twice a year, 



dubia, 25', Je., purplish 



ro., hybrid (V). 



ROCAMBOLE. 



The popular name given to Alliura Scorodopra- 

 sum, a hardy perennial (prd. Liliaceie). The plant 



ROCKERY. 



The term " rockery " covers a great variety of 

 structures, many being ill adapted for the cultiva- 

 tion of dwarf plants, which thrive better or show to 

 more advantage in elevated positions. Kockeries 

 constructed of expensive material and at great 

 cost are often less suitable for Alpine plants than 

 those built of almost any stone, or even of clinkers 

 covered with cement. In the formation of rockeries 

 the plants' welfare ought to be the primary con- 

 sideration, combined with an aim towards orna- 

 mental or natural appearances. Stone of a neutral 

 colour is to be preferred to that which will draw the 



I'lwto: Council it- Company, Ltd. 



KODGEKSIA PODOPHYLLA (seep. 281). 



forms bulbs or " cloves " in the same way as 

 Shallots (correctly Eschallots) do, and also pro- 

 duces bulbs at the summit of the stem. The 

 flavour of these is milder than Garlic, hence in 

 many establishments it is preferred. Plant in 

 spring or autumn, 6" or 8" apart each way, in fertile 

 soil, and when the leaves die down lift, dry, and 

 store the crop. Select firm, medium-sized bulbs 

 for planting. 



ROCHEA. 



Free flowering, greenhouse, evergreen succulents 

 (nrd. Crassulacese). Propagation, by cuttings of 

 the tops of unflowered shoots in late summer or early 

 autumn. Pot as necessary and keep in a cool temper- 

 ature throughout the winter. Pinch the shoots in 

 spring when growth recommences. Soil, two parts 

 loam and one part leaf mould with coarse sand and 

 finely broken crocks or bricks. {See also CKASSULA.) 



Principal Species: 



coccinea, 1', Jy., sc. (nee 



P- 279). [cata). 



falcata (see Crassula fal- 



jasminea, 9", Ap., wh. 

 versicolor, 2', My., wh. 



eye from the flowers or lessen their beauty. Thus, 

 white spar destroys the effect of flowers of that 

 colour, but grey limestone and red or grey sand- 

 stone improves their appearance, especially when 

 the stones are toned down by the modifying influ- 

 ences of time. Vain imitation of the peaks of the 

 Alps in miniature should be refrained from. 



The site should be sheltered from cold winds by 

 evergreen shrubs, such as Rhododendrons, or by 

 walls or hedges, but the walls must be hidden as 

 much as possible, and buildings should be kept out 

 of view. The main body should consist of good, 

 free soil, with plenty of rubble below for drainage. 

 Against this mound the stones .should be built in 

 such a manner that rain may run into the rockery 

 and not off it. This may be assisted by giving the 

 stones a slight tilt inwards. As the work proceeds 

 fill the crevices with suitable soil, made firm, but 

 not quite solid. 



JtncTi Broom (see Genista). 



Rock Carrot (see T/tajtsia edulis). 



