ODONTOGLOSSUM. 213 



Mr. Richer, gardener to S. Rucker, Esq., Wandsworth, each 

 flower measuring upwards of three and a half inches in dia- 

 meter. It grows at an altitude of 7,000 to 8,000 feet in 

 Bogota. 



O. Alexandres guttatum. — This is a distinct and handsome 

 variety ; the flowers are large, pure white, sepals and petals 

 bearing a few spots of reddish-brown ; Up large, deep yellow 

 at the base, and there dotted with red, with a single large spot 

 in the centre of the lip. Native of New Grenada. 



O. Alexandra giganteuni. — Pseudobulbs and leaves large, 

 and robust ; flower spike three feet high, branching, and 

 many-flowered; flowers large, white, spotted all over most 

 profusely with reddish brown. I saw a plant of this variety 

 last October in the collection of T. Dawson, Esq., Glasgow ; 

 it had three spikes of bloom, each upwards of three feet high, 

 much branched, and bearing over fifty superb flowers. 



0. Alexandra TriancB. — ^A superb variety ; flowers large, 

 nearly three inches in diameter ; sepals white, shaded with rose, 

 the upper one having a single large round spot in the centre, 

 while the lower ones have each three such spots, with several 

 smaller ones ; petals pure white, and much broader ; lip with 

 a large blotch of rose in the centre, barred and spotted with 

 the same colour. 



0. Alexandra Wameri. — Another magnificent form of this 

 beautiful species. It was named by Mr. Bateman when ex- 

 hibited at the Royal Horticultural Society's Exhibition in 

 1869. The sepals are white, stained with rose, and spotted 

 with purplish brown ; the petals are very broad, dentate at 

 the edges, and pure white ; lip large, white, stained at the 

 base with rich yellow. 



O. Andersoni. — This is a singular and very interesting plant. 

 The pseudobulbs and leaves resemble those of 0. Alexandra, 

 but the flowers suggest the idea of its being a natural hybrid 



