ONCIDIDM. 



ORCIIIDES. 785 



Bot. Reg. XXVI. 1840. Misc. 138. Oncid. pachyphylhm is ihe snme os ihe Oncid. 

 Cavendishionum, Dat. Orcli. of Mex. and Guat. t. 3. 



Obs. Haec sensu Lindleyano. Quaestio perdifQciiis, In Xenlis Orchidaceis I. ex- 

 plicavi (et suadente amic. Wendland fil.) et distinxi utrumque. Rchb. fll, 



135. ONXIDIUM BIC.ALLOSUM Lindl. in Benth. Pl. Hariw. p. 94. B. R. 1843. t. 12. 

 B. M. l, 4148. Lindl. Fol. 42: 



Much lilie the last ; but ihe basal lobcs of the lip are very much smaller , ihe 

 flowers are ahvoys larger, and they usnally (ahvays?) grow in a raceme instead of a 

 panicle, Sir W. Hooker suggests ihat it may be a variety: but ihe dififerencijs indi- 

 cated seem conslant. 



Wild in Guaiemala— Hartweg. 

 Lindl. Pl, Hartw. Fasc. 2. p. 94. 1842: 



Bracteis ovalis membranaceis obtusis, sepalis liberis obovatis con- 

 cavis, petalis oblongis obtusis, labelli lobis lateralibus abbreviatis, inter- 

 medio maximo transverso emarginato subcordalo, crista bicallosa,' tuber- 

 culis distantibus uno anle alterum posito rugosis subtrilobis, columnae 

 auriculis linearibus falcatim recurvis. 



Ramulum inflorescentiae tanlum vidi. Secundum cl, Hartwegium faciem induit 0. 

 Cavendishiani. omnino tamen diversum. Crista labelli bituberculata, nec non lobis la- 

 teralibus parvis facile dislincta. Lindl, Hacienda de Diegera. Mexico. Ilartweg. 



Lintll. Bot. Reg. XXYIII. (1842). Misc. 14: 



Has much ihe hahit of 0. Cavendishianum so that it seems a mere variety of it, 

 Flowers 2" diam. appear in a dwarf erecl raceme, not panicle; they are of a rich 

 yellow , wilh ihe sepals and petals bordered wiih cinnamon colour; the labellum has 

 two very small lateral lobcs, and for its crest it has two distinct tubercles , the 

 posterior double. ihe anterior trilobed, and the iwo separaied by a considerable space. 

 The flowers are slightly scented, which is not the case with 0. Cavendishianum. 



Bot, Reg. XXIX. (1813). tab. 12. — Hook. Bot. Mag. (1845.) 4148: Dr. Lindley 

 alludes to its close affinity wiih Oncidium Cavendishianum, so much to seem a mere 

 variety of it. but it is in realily quite distinct. My own invesligations would rather 

 leed me to consider the two as forms of one and the same kind. and that the spe- 

 cies is liable to considerable varialion the more especially as our Oncid. pachy- 

 phyllum Bot. Mag. 3807 is considered by Dr. Lindley a state of 0, Cavendishii. To 

 me our present plant seems to correspond better wiih Mr, Bateraans original flgure 

 of 0. Cavendishii, than our 0. pachypljyllum does. 



III. Ilymenoptera. A. Heleranlha. L. F. p. 42. 



136. ONCIDIUM PENTADACTYLON Lindl. in Ann. Nat. Hist., XV, 383. Lindl, Fol, 42: 

 Flowers small . in a long narrow many-flowered panicle, fragrant (Purdie), ap- 

 parently gaily blolched wilh brown on yellow. 



Wild in Peru; Quito— herb. Ilooker; village of Tanibillo— Hartweg. Jamieson , ia 

 hb. Hooker; Caraccas, Paramo of Ruiz— Purdie. 

 Lindl. I. c. 1845: 



Pseudobulbis ovatis compressis diphyllis, foliis lanceolatis tenmbus, 

 scapo longissimo paniculato multo brevioribus, floribus plurimis abor- 

 tientibus, sepalis lineari-lanceolatis liberis, pelalis lanceolatis, labello 

 oblongo emarginalo, pandurato lobis basilaribus intermedio subaequa- 

 libus, crista verrucosa processubus 5 digitiformibus circumdata, co- 

 lumnae alis maximis obtuse lobatis. 

 Quilo. (Hariweg.) 

 VI. 99 



