62 ONCIDIUM. . 



It is dedicated to Mr. William Marshall, of Aucliinraith, Bexley, 

 well known as a former exhibitor of orchids. Our illustration 

 represents a fine form in the collection of Sir Trevor Lawrence, 

 Bart.j at Burford Lodge. 



A remarkable Oncidium, figured in Godefroy's OrrhidojjMle for 1888, 

 page 47, under the name of On. Mantinu, may here be noticed. It 

 flowered in M. Truffaut's horticultural establishment at Versailles in 

 the previous year, and had been acquired from M. Binot, an orchid 

 collector at Petropolis in Brazil, with plants of On. crispum. It has 

 the aspect of being a natural hybrid, of which On. Marshallianum is 

 presumably one parent. Another supposed natural hybrid is figured in 

 Williams' Orchid Album, IX. t, 405, under the name of On. 

 Larkinianum ; in this case the characteristics of On. Marshallianum 

 evidently greatly preponderate.* 



On. Martianum. 



Pseudo-bulbs ovoid, 1^ — 2\ inches long, much compressed with 



three — four ribs on each of the flattened sides, monophyllous. Leaves 



oblong, acute, 5 — 7 inches long. Scapes panicled, as long again as the 



leaves, many flowered. Flowers 1| inches in diameter ; sepals and 



petals small, yellow l)arred with chestnut-brown ; the dorsal sepal 



clawed, sub-orbicular, concave ; the lateral two connate at the base, 



linear-oblong ; petals oval-oblong, apiculate, undulate at the margin ; 



lip large in proportion to the size of the flower, bright canary-yellow 



with some red-brown spots around the crest, three-lobed, the side 



lobes roundish oblong, the front lobe shortly clawed, transversely 



oblong with a shallow sinus in the anterior margin ; crest a triangular 



erect plate with two smaller ones on each side. Column wings 



triangular, dentate at the outer margin. 



Oncidium Martianum, Lind. in Bot. Reg. 1837, sub. t, 1920. Id. Fol. Orch. 

 Oncid. No. 74. On. bicolor, Lindl. in Bot. Reg. 1843, t. m. 



First discovered by the German botanist and explorer, Dr. Martins, 



of Munich, in the Brazilian province of Miuas Geraes, and imported 



from Brazil by Messrs. Loddiges about the year 1842, We are 



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



description. 



On. microchilum. 



Pseudo-lndbs ovoid or sub-orbicular, much compressed, 1| — 2 inches 

 long, monophyllous. Leaves rigid and leathery, oblong or elliptic-oblong, 



* Doubtless other natural hybrids exist among Oncids, including some described in these 

 pages as species, but the marks of hybridity in any such cases do not appear to be suiEciently 

 evident to admit of their being classed as mules. 



