ONCIDIUM. 51 



the Calabash trees,* appearing to prefer those to any other ; however, 



on being tied to the branches of the Orange, the Soursop,t the Manimee,t 



and even the Brugmansia arhorea, it grew well upon them all and 



produced vigorous stems with upwards of twenty blossoms on each stem. 



The scent is extremely fragrant and is retained after the flower is dried, 



only becoming fainter and more of a spicy odour than when fresh. The 



plant remains in full beauty ten or twelve days, a long period in that 



climate ; and I found that it always required a shady situation and a 



living stem to grow upon, without which it would not produce its 



flowers in the highest perfection. "§ 



It flowered for the first time in this country in Messrs. Loddiges' 



nursery shortly after its introduction, and not long afterwards in the 



Horticultural Society's garden at Chiswick, in the orchid collections 



at Chatsworth, Wentworth^ and other places. Oncidium Lanceanum is 



not confined to Surinam ; it was found by the brothers Schomburgk 



in many places in British Guiana, and we have seen an herbarium 



specimen from that colony gathered by Mr. Jenman, Curator of the 



Botanic Garden at Georgetown. 



On. Leopoldianum.il 



" Vegetative organs not seen. Panicle very long, branching, many 

 flowered. Bracts broadly ovate, acute, ^ inch long. Flowers about If 

 inches in diameter; sepals shortly unguiculate, the dorsal one broadly 

 elliptic, obtuse ; the lateral two elliptic-ovate, obtuse ; petals elliptic- 

 ovate, sub-acute, a little shorter and narrower than the lateral sepals ; 

 lip fleshy, trulliform, sHghtly three-lobed, sub-acute, the basal lobes 

 rounded ; crest consisting of three short fleshy parallel plates, the central 

 one being higher than the other. Column wings rounded and fleshy." 

 — R. A. Rolfe in Gard. Chron. VIII. s. 3 (1890), p. 556. 



Oncidium Leopoldianum, Eolfe in Gard. Chron. loc. cit. Lindenia, VI. t. 274. 

 "This is a very handsome Oncidium, recently introduced by 

 Messrs. Linden, L' Horticulture Internationale of Brussels, from the 

 Andes of South America, and dedicated to His Majesty Leopold II., 

 King of the Belgians. Its nearest ally is Oncidium corynephorum , 

 Lindl,, a fine species discovered by Matthews in Peru, in 1838, and 

 known only by dried specimens." 



On. leucochilum. 



Pseudo-bulbs oval-oblong, 3| — 5 inches long, much compressed with 

 2 — 3 prominent ribs on the flattened sides, diphyllous. Leaves ligulate, 



* Cresceniia Cujde. + Anona muricata. % Mammea americana. 



§ Trans, of Hort. Soc, loc. cit. supra. || Not seen by us. 



U. OF ILL LIB. 



