A. YD THEIR JIANAGEMENT. 499 



Vanda. 



diameter ; over a score of the latter have been obtained on a 

 single raceme, but twelve is a good average number. The 

 oblong sepals and petals are of a beautiful pale lavender-blue, 

 the small lip being more distinctly blue. In good varieties the 

 parts of the flower overlap, and are often ijrettily tessellated 

 with a darker shade. \\'hen they first expand, the flowers are 

 much smaller and paler than they finally become. Northern 

 India and Burma. 



The cultivation of this species differs somewhat from that of 

 other Yandas. Chiefly, it requires less heat. On its native hills 

 it is occasionally subjected to frost, and this it withstands without 

 permanent injury. Under cultivation it may be grown with the 

 Cattleyas, or even in the vinery, but a sunny position, and, above all, 

 a constant supply of fresh air are essential. Shading should only 

 be used during the hottest sunshine. It does not like to have 

 its roots confined, and we find that it thrives most satisfactorily 

 in baskets of teak. Abundance of water must be given during 

 active growth, but from December to the time when the roots 

 give signs of new growth but little is needed. 



V. cferulescens (Griff). — A distinct and charming species 

 with stems iin. in diameter and 6in. to ift. high, bearing 

 coriaceous, d'lstinctly-channelled leaves 6in. in length, the apices 

 of which are unevenly cut. The flowers are lin. to i-^,in. across, 

 and upwards of a dozen are produced on the slender, erect 

 scape ; the sepals and petals are ovate, spreading, slightly 

 incurved, and of a pale purplish-blue, the smaUer lip beuig of 

 a rich violet-blue, with the anterior portion standing almost at 

 right angles to the base. This species was originally discovered 

 in Burma by the eminent Indian botanist Griffiths, in 1837, but 

 was not introduced to commerce until 1869. (B. M., t. 5S34.) 



Var. Boxallii has the sepals and petals white, with a hlac 

 tinge, and a deep violet-blue lip. (B. jM., t. 6328.) 



V. Cathcartii {Lindl.y^X synonym oi Arachnaiifhe Catluartii. 



V. Denisoniana (Rchb. /).— A dwarf species, whose lovely 

 white flowers distinguish it from all other Yandas. The 

 leaves are 6in. to loin. long, strap-shaped, and much decurved ; 

 from their axils the four to si.x-flowered racemes are produced, 

 -each flower being about 2in. in diameter. The upper sepal 

 and the two petals are broadly spathulate, the lower sepals being 

 more ovate, narrowed at the base. The hp is contracted m the 

 middle, the terminal portion dividing into two outwardly curving 

 lobes. Reichenbach compared its shape to that ot a black- 

 cock's tail. Burma, 1869. It blooms during the summer months. 

 /B. M., t. 5811.) 



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