AND THEIR MANAGEMENT. 507 



WARREA. 



As at present constituted, this genus of stove Orchids, 

 belonging to the tribe ]'aiidcic, contains but two or three 

 species. It was named by Lindle)- in honour of the 

 discoverer, Frederick \A'arre. Flowers showy, shortl\' 

 pedicellate ; sepals and petals broad, concave, the lateral 

 ones oblique at the base, adnate to the foot of the rather 

 long clavate column ; lip affixed to the foot of the column, 

 sessile, very shortly contracted towards the base, and 

 incumbent, at length erect, broad, and concave, the lateral 

 lobes scarcel}- prominent, the middle ones expanded, entire 

 or bifid, the disk having elevated fleshy lines ; pollen- 

 masses four ; racemes elongated, loose ; scape leafless, 

 man3'-sheathed, tall, simple ; bracts short. Leaves few, 

 distichous, elongated. Stems leaf\-. The species, which 

 are nati\-es of Peru, Brazil, Colombia, &c., require warm, 

 intermediate-house treatment, but are rarely seen in 

 cultivation outside botanic collections. 



WARSCEWICZELLA {RMk f.). This is now included 

 under Zygopetalum. 



XYLOBIUM. 



Little-known stove epiph}'tal Orchids belonging to the 

 tribe Vaiidetz, natives of tropical America. The name given 

 by Lindley is from xylon, wood, and bios, life ; in allusion 

 to the substance on which the plants grow. Flowers 

 racemose, ver}' shortly pedicellate ; sepals erect, at length 

 somewhat spreading, the lateral ones broader than the 

 upper one, adnate at the base to the foot of the column, 

 forming a chin ; petals similar to the upper sepal, but 

 smaller ; lip sub-articulated with the foot of the column, 

 sessile, or contracted, and incumbent at the base, at length 

 erect, the lateral lobes erect, clothing the erect, semi-terete 

 column, the middle one short, broad, and spreading ; scapes 

 at the bases of the pseudo-bulbs, erect, simple. The species, 

 which are of botanic rather than horticultural interest, re- 

 quire intermediate-house treatment. 



