ONcroiUM. 25 



crowded, f inch iu diameter ; sepals and petals similar and sub-equal, 



reflexed, spathulate, obtuse, golden yellow ; lip lighter in colour than 



the other segments, oblong, dilated both at the base and at the apex 



into two roundish lobes; crest nearly oblong, with two teeth in front 



and two on each side. Column wings obsolete, 



Oncidium chrysomorphum, Lindl. Fol. Orcli. Oncid. No. 188 (1855). Echb. in 

 Walp. Ann. VI. p. 811. Id. in Gard. Chron, VIII. (1877), p. 353. 



A very distinct species of which we find but little recorded 



beyond the intimation that it is a native of the Caracas region, 



and that it was gathered by Purdie in the extreme north of New 



Granada. It appeai-s to have been first cultivated by the late 



Serjeant Cox, at Mill Hill, in 1877, flowering in the winter months. 



We are indebted to Mr. F, W. Moore, of Glasnevin, for materials 



for description. 



On. chrysopyramis 



Pseudo-bulbs oval-oblong, 1| — 2| inches long, compressed with acute 



edges, diphyUous. Leaves linear-ligulate, sub-acumiuate, 5 — 6 inches 



long. Peduncles slender, arching 18 — 24 inches long, loosely paniculate, 



many flowered. Flowers about f inch across vertically, of a uniform 



canary-yellow ; upper sepal and petals claAved, oblong, apiculate, concave, 



keeled behind ; lateral sepals free, linear-oblong, falcate, keeled behind ; 



lip panduriform with a deep cleft in the anterior margin ; crest with 



three projecting teeth in front and two bipartite lateral ones between 



which is a minutely tuberculose cushion. Column wings falcate, two- 



lobed, bent over the anther and denticulate at the outer edge. 



Oncidium chrysopyramis, Echb. in Bonpl. 1854, May 1. Lindl. Fol. Orch. 

 Oncid. No. 98. 



One of Warscewicz's discoveries on the Andes of Ecuador or 



Southern New Granada about the year 1852, and since occasionally 



imported with other orchids from the same region. Our description 



is from a plant that flowered in our houses in June, 1889. It is 



very near the better known Oncidium pyramidale, ^^from which it 



differs in having much smaller flowers, a thinner and weaker panicle, 



and very narrow two-lobed column-wings.'^* 



On. concolor. 



Pseudo-bulbs oval-oblong, 1| — 2 inches long, ribbed, di-triphyllous. 

 Leaves lanceolate-ligulate, acute, 6 inches long. Peduncles drooping, as 

 long again as the leaves, usually racemed and many flowered. Flowers 

 about 2 inches across vertically, bright canary-yellow ; dorsal sepal and 

 petals elliptic-oblong, acute, the lateral sepals longer, narrower and more 



• Lindley, Fol. Orch. Oncid. No. 97. 



