270 



THE FLORAL WORLD AND GARDEN GUIDE. 



Tlien there is an Acer Wageneri 

 laciniatum, a variety of Maple, which 

 M. Pepin concluded had been ob- 

 tained by seeds from Acer eriocarpum, 

 one of the finest of the American 

 Maples. The young wood of this 

 new tree is purple and glaucous, and 

 its leaves, which are very much laci- 

 niated, are glabrous above and white 

 and downy beneath. This variety, 

 the writer observes, from its light and 

 carved foliage, will not fail to be 

 chosen for the ornamentation of parks. 



Another shrub of garden interest 

 is Madura aurantiaca, with the leaves 

 streaked with white. This is new, 

 and remarkably effective. M. Pepin 

 also refers to Fontanesia Fortuni, a 

 plant brought from China by Mr. 

 Fortune, as being hitherto rare, but 

 now extensively grown by M. Dau- 

 vesse, and forming a fine shrub, with 

 foliage having much resemblance to 

 that of certain species of Japanese 

 Privet, vigorous in habit, and flower- 

 ing abundantly. 



It is, we learn, to M. Dauvesse 



that we are indebted for the elegant 

 dwarf Thuja (or Biota) orienlalis 

 aurea, which was picked out from 

 his seed-beds of Thuja orientalis iu 

 1845. And in 1861 he obtained in a 

 similar way Cuj)ressus Lawsoniana 

 nana, a variety which assumes a pyra- 

 midal form, and has short branches 

 and a compact habit, which give to it 

 a novel and peculiar appearance. 



We may also mention as a desir- 

 able addition to our hardy ornamental 

 trees a very handsome Red-floioered 

 Locust Tree (Robinia Pseud-Acacia), 

 of which information has reached us 

 from another source. This tree has 

 been obtained by M. Villevieille, 

 nurseryman at Manosque, in the de- 

 partment of the Basses Alpes, and 

 must prove a very decided acquisi- 

 tion. The flowers are as fragrant as 

 those of the parent, and this quality, 

 together with their colour and the 

 elegance of the foliage, cannot fail to 

 render the Red Locust a favourite 

 amongst flowering trees. — Gardeners* 

 Chronicle. 



MANAGEMENT OF COOL STOVE AND GREENHOUSE 

 ORCHIDS. 



The culture of orchids in a green- 

 house, or on the cool system, does 

 not differ in principle, but in degree, 

 from that practised in the warmer 

 temperature with which in idea these 

 plants are more usually associated. 

 The difference consists in rendering 

 the period of rest or repose some- 

 what more rigid and decisive, and 

 making it correspond strictly with 

 our winter ; and in taking advantage 

 of the summer period of the year 

 chiefly to induce the growth and 

 blooming of the plants. One thing 

 should not be lost sight of by those 

 who attempt to grow these plants on 

 the cool system only, and that is, that 

 by this means they cannot have that 

 continual succession of bloom which 

 is kept up by the flowering of one or 

 other of the species under the other 

 course of treatment. Little or no 

 blossom can be expected in the winter 



season ; and as during summer the 

 growth of most of the kinds will be 

 going on simultaneously, it is pro- 

 bable that many would be thrown 

 into bloom at nearly the same period, 

 though the different habits assumed 

 by the various species would cause 

 some difference in this respect. 



I will now proceed to sketch out 

 briefly the course of treatment which 

 it would be most desirable to follow ; 

 and in doing so, shall arrange my 

 observations under the heads of 

 winter treatment and summer treat- 

 ment, including the operations of 

 potting and watering. 



During the winter season the 

 plants must be at rest. I will sup- 

 pose them to be placed in a well-con- 

 structed greenhouse, provided with 

 the full heating powers such a struc- 

 ture usually commands, water-tight 

 and wind-tight, so far as perfect re- 



