66 GENERAL REVIEW OF THE ORCHIDE^. 



Leaoe^ of VaxNDE^. — Fig. 7, ()(lontoijlo!<min crispunt. Here the cuticular ] 



covering is thin, the capacity for resisting evaporation and the storage , 



capabihties as regards water rehatively small, and the fibro-vascular i 



l)undles numerous ; circumstances that seem to point to the cultural I 



Via. 8. Transverse section of leat of lilfremiria HarrisoitUe, x -iO. The uumerals as in Fig. 1. 

 (From the Qiirdeners' Chronicle.) 



treatment experience has proved to be the best, viz., diffused light and 

 abundance of moisture. Fig. 8, Bifrenaria Harrlsonue. The structure is 

 essentially the same, and needs no detailed explanation further than to 

 note the numerous small fibro-vascular bundles immediately above the 

 lower epidermis ; the leaf has thus a very stringy appearance Avhen torn. 



Fig. 9. Transverse section of leaf of Vanda tricolor at niidrilj, X iO diameters. 

 Nos. 1—5 as before ; 7, bast-like fibres. 



This structure indicates no necessity for direct solar exposure. Lijcaste 

 Skinneri has a similar but not an identical structure. Fig. 9, Vanda j 

 tricolor. Like most monopodial orchids, it comes from a locality where 

 the temperature is always high and its fluctuations at a minimum, and ' 



