84 ONCIDIUM. 



among the recorded stations of this plant. It varies somewhat in 

 habit and still more so in the colour of its flowers^ and has received 

 several names in consequence. 



On. tigrinum. 



Pseudo-lnilbs sub-globose, compressed, 3 — 4 inches in diameter, di- 

 triphyllons. Leaves linear-oblong, obtuse, folded at the base, 9 — 1 2 

 inches long. Scapes robust, erect, 24 — 36 inches high, loosely panicled ; 

 bracts small, subulate, appressed. Flowers about 3 inches across verti- 

 cally, fragrant ; sepals and petals similar and sub-equal, narrowly oblong, 

 undulate, reflexed at the tip, bright yellow heavily blotched with brown ; 

 lip large and spreading, almost fiat, wholly yellow, broadly clawed, the 

 basal lobes small and rounded, the blade transversely and broadly oblong, 

 emarginate ; crest consisting of two short ridges and a large central one, 

 terminating in three blunt teeth. Column wings ear-shaped. 



Oncidium tigrinum, La Llave et Lex. Nov. Veg. Descript. p. 36 (1825). Lindl. 

 Gen. et Sp. OrcL p. 203 (1832). Id. Fol. Orch. Oncid. No. 157. Williams' Orch. 

 Alb. III. t. 137. Rev. hort. 1889, p. 176. Sander's Rekhenhachia, II. pi. 88. 

 On. Barkeri, Lindl. Strt. Orch. t. 48. Id. in Bot. Reg. 1841, misc. No. 174, 

 Paxt. Mag. Bot. XIV. p. 97. Ulus. hort. I. t. 2. Odoutoglossum tigrinum, Lindl. 

 Fol. Orch. Odont. No. 10 (1852), 



var. — splendidum. 



Pseudo-bulbs smaller and monophyllous, both pseudo-bulbs and leaves 



changing with age to a bronzy purplish brown. Peduncles shorter, 



usually racemed and fewer flowered. The sepals and petals are more 



reflexed, and the claw of the lip somewdiat broader. 



On. tigrinum splendidum, Hook. f. in Bot. Mag. t. 5878. Van Houtte's Fl. des 

 Serres, XVIII. t. 1825. On. splendidum, A. Richard, fide Rclib. in Gard. Chron. 

 1870, p. 1213. De Puydt, Les Orch. t. 33. Williams' Orch. Alb. VIII. t. 373. 

 Sander's ReichenbacMa, II. t. 78. Godefroy's Orchidophile, 1891, p. 304. 



var.— unguiculaturQ. 



Panicles looser and the flowers smaller ; the sepals and petals some- 

 times spotted, not barred ; the claw of the blade of the lip longer and 

 narrower. 



On. tigrinum unguiculatum, Lindl. Fol. Orch. Oncid. No. 157. On. unguicu- 

 latum, Hort. 



This fine Oncid was first made known to science by the Mexican 



botanists, La Llave and Lexarza, who gave a description of it in 



their Novarum Vegetahilium Descriptiones, published in 1825.* It 



was first cultivated in this country by Mr. Barker, of Birmingham, 



who introduced it from Mexico in 1839 or 40; it forms the subject 



of the last plate in Lindley's superb work, Sertum Orchidaceum, under 



the name of Oncidium BarJceri, in compliment to the introducer. 



That portion of it devoted to orchids is called Opusculum Orchidaceum. 



