30 



ONCIDIUM. 



Oncidiiini cucullatum, Lindl. Sert. Orch. sub. t. 21 (]838). Id. Fol. Orch. Oncid. 

 No. 69. Paxt. Fl. Gard. III. t. 87 (1852—3). Bdg. Hort. 1869, p. 837, pi. 19. 

 Van Houtte's Fl. des Serves, Fill. t. 835. Id. XXIII. t. 2457. The Garden, XXIL 

 (1882), t. 350 (giganteum). Lindenia, II. t. 81. Leiochilus sauguinolentus, Liudl. in 

 Bot. Reg. 1844, misc. 91.* 



Oncidiura cucullatum. 



var. — macrochilum. 



Leaves and racemes longer, the latter flexuose and many flowered ; 

 lip broader than in all the cucullatum forms, wholly purple. 

 On. cucullatum macrochilum, Lindl. Fol. Orch. Oncid. No. 69 E. 



var.— nubigenum. 



Plant smaller in all its parts ; sepals and petals variable in colour, 

 generally light greenish brown, sometimes with a pale margin ; lip 

 narrow at the base with the middle lobe almost sessile, white with a 

 violet spot in front of the three-tubercled crest. 



On. cucullatum nubigenum, Lindl. Fol. Orch. Oncid. No. 69 D. Bot. Mag. t. 

 5708. On. nubigenum, Lindl. Gen. at Sp. Orch. p. 197 (1833).+ Rchb. in Gard. 

 Chron. 1867, p. 376. Bekj. Hort. 1869, p. 337. 



var.— PhalsBnopsis. 



Pseudo-bulbs somewhat smaller and more ovoid, the leaves narrower, 

 the scapes more slender and generally fewer flowered than in the commoner 

 cucullatum forms, and the flowers difi'erently coloured ; sepals and petals 

 milk-Avhite barred with deep purple ; lip white with slight flush of 

 rose-purple and Avith some dark purple spots around the crest. J 



On. cuculliitum Phalreno])sis, supra. On. PhaLTnopsis, Rchb. in Gard. Chron. 1869, 

 p.. 416. Illas. hort. 1870, t. 3. Williams' Orch. AJh. II. t. 96. Lindenia II. t. 123. 



* Evidently described from an abnormal form said to have been sent from La Guayra, but 

 which Liudley liiinself afterwards referred to Oncidium cucullatum. The locality too is doubtful. 



+ It will be seen from our literary references that Lindley's nubigentcm is an older name for 

 this species than cncullatum, or in other words, the var. nubigenum, supra, is the typical form. 

 It is usual when one species, or one tliat was at first assumed to be such, is reduced to a variety 

 of auother, for tlie holder of the two to be retained as the specific name. In this case Lindley, 

 unintentionally perhaps, reversed the usual practice ; but as his specific name cuctdlatum is 

 accepted by other eminent orchid authorities, we do not feel justified in disturbing the 

 nomenclature. 



% The distinction between this and the preceding variety is not very clear ; practically it is a 

 difference of colour only, the variety niihigcnura being intermediate in this respect between On, 

 cucullatum and the variety Phakcnopsis. 



