II 



I 



however, for these rroona propose the union of Cyrtochilum and Oncidium. which I think may be 

 distinguished saifcftctorily in tho following manner- Oncidium always haa th© W© lateral sepals 

 cither more or lc*s united or distinctly ftppftMCunaled at tho bate, Cyrtochilum ha* them equally 

 spreading: on this account myC- Karwlnskii must be reduced to Oncidium, notwithstanding iti* 

 entire lip, with lamcllte in liCQ of tubercle* at its concave base, In the second place, the lip of nil 

 true Cyriochila is narrowed towards ihe apex, whilo in Oncidium, except in those species where it 

 is deeply hastate, it is dilated and rounded at the apex. 



With respect to OdontoRlossum, it wn* first distinguished by an unguieulate labellum adnato 

 half-way up the face of the column, a rcflcxed lumina Willi three subulate tubercles at the base, and 

 it column with two auricles. Of these diameters the first i* not found in any aperies I have 

 examined, and probably arose in some mistake; the other* are inconstant, Thus the reflcxed 

 lamina, although characteristic of some species is not of others; in Odontoglossum nebulo*um<% 

 laccnnn \ Hnllii, eirrhosiim, &c. it is a conspicuous feature, but it can hardly be observed in 

 O- Rossii 1 *, and laaeulaimn (or cordatum of the Botanical Register), and it does not exist at all 

 in O. Ccrrantcvrii, which is very near O, ncbulosum. The nature of the tubercle* is also I suspect 

 misunderstood in the species In which it is assigned j for while two teeth or sctm arc common, 1 do 

 not find the number three in any case except O. lacerum, and then it is accompanied by other 

 characters. The presence or absence of auricles upon the column is not to be taken as a generic 

 character, because it has already been shewn that tin* character is inconstant in Oneiditim : because 

 it is equally variable in Cyrtochilium, of which C. volubile is really a species ; and because they arc 

 absent in Oriontoglossum pardinum (Cyrtochilum pardinum, Grn. ci Sp. 210). ncbulosum, Ccrvantesii 

 and Rossii, while they arc present in O. incmbranaccum™, which is hardly distinguishable from 

 the last, and in several other species. 



The true characters of Odontoglosstim, and those by which alone it can be distinguished gene* 

 rically from Cyrtochilum and Oncidium, are a long; column, and an entire miguiculaie lip, narrowing 

 to the point, and furnished at the base with a pair of fleshy, entire, or fringed lamella*, in front of 

 which stand two, or rarely three, teeth or bristles. In this view of the question, Mr. Batcinan's 

 Cyrtochilum bicioniciise will belong to Odontoglosstim ; while my own Cyrtochilum ixioides, which 

 I once thought would best arrange with Oriontoglo**um. will retain its original position. 



In conclusion, the differential characters of Oncidium, Cyrtochilum. Miltonia. aud Odon to- 

 glossum, may now be considered settled as follows; 



Oncidivm. Sepala lateralia labello supposita, nunc connata. Labellum planum, siepius sessile, cor* 

 datum, pandurntum v. trilobum. apiee dilatntum, basi stepius varie tuberculatum. 



latum, 

 es lame I* 



(*VRTo<"iit lvji. Scpaln luleralin patulu, libera. Labellum planum, obloitguin, >u<pihs unguicu 

 integrum VCl mar-'iue dentalum, nnicc, an»u > tat iuii, luisi tuberculatum villosum aut nlnribs 



integrum 



latum. 



uiirg 



P 



ftllLTOVIA, Sepala Interalin patula, Ii1>cra. Labellum sessile, integrum, cxplauatum v. cucullatum, 

 apicc rotundatum. veins fiascos |ilnr^^ tutarcuItLtodaxnellaii*- 



nox tog loss uai. Scpaln lateralia patuln, libera* labellum planum, uuguiculatum, ascendens, 

 limbo reflexo diviso deUtatO, apiee nngiistntu ; biLsi concaviim crista hihtmellata raro hiuhriain 

 scpins ant ice bidcntatu auctum, Colnmna elongata, apice auriculata nut aptern* 



iialit Ulcrelibu* h»*i cotili^ais ivtilif Ltk>ribut ronfortnibvs Ubctfo <4avaIo mciabr*nic*o rawgxiLLto convrio: tubcrrobt blui* 

 [Anltrlit cfctror*-um *inuali* raamnu ii*nii cra**i lougMbo*, nJi* |*nU ira»Qlo-iru*i£al*ribuj. **Vrxi(v, /'r^pc X J+p> W 



jmi^, Oarnw, K*nrtatKL 



(7) tltK>HTiriiLiioi'Ai **l*&Mrm; ImctrnkhuMA* <lij»hilli-, folia Oblongi* urrctii (Viluoculo terminal] crccto tub-t»&xo hreviorilMtt, 

 br»rtot» tnMiibntii*ft<ii tJttHcAtt «*rk» lIiujhIhi hrrvinrilid^ 4r*|u n^rmbniufpU olJ-m^ii iibittUlM Ajilcuktl*. prtalii Mttfornubtti 

 haionbtts b«l aagatttlbi Ubcllo ^wlt WicwuU^c^nwobinUoctatoacutoitduUkto; Iwndll* nuuJrnb rotuixUti* knUrionbai 

 oUmis column* ajSfrTi |mlA**ojiiic— —MeJtw t Kaniotki. 



(S) Ol» vnxil^Hau w iwirtm; ^nt\ahu\Xi» ot«libti« a»ci|>itibim folil« llnc*ri -<W«%p* in prtiolmn rnnnlictiUlitm nn(^i*uiis rwr«Ki 

 HibjaiiimUto terminally bmrtcit oraUt jmuIi* «|ii4ijniiuniiibu«, i^ralU (trthlihcup rb«Qbf«>Unc<nt*l(* acutniiuilis L*bcl!o l*n»nk 

 <iYl1T+> fiwmv ufHcc rai^lMn Uirirlli, fimbrUti*: iloulWulU *2 «*(cnoribti4 tiibuulitgUbris ci>lutntifi ^Ubr# auficulH tubtrunrali*. 

 Prt*ri«; <;w^«, MnThf« (1S07|, 



(tl) OiiONTOtiLOui x Rfrtiii ; ]»ruili»buIU« osnl'n ftra|*iti>i- udpitJUtM imwu|»ltvlt;s Milt ot>Ii*ti^O'LinrvolnlM craim nuIJcali ubblnWn 

 l*p44U»us bmrtpU mrtnbraucfu rariiinlt* *?urani*ti>. mlb tinfriri^Lvxiv^ilit rariaUli nruim&alu [iitv&tihut, tvUlit oblooirU 

 tibial i M*tiJuit*, bitwIUi »t£bn4timV>r»ipitr, mur^iiAtn uncluUlo UmcLIU uii^uii funll u'dlilxi* romwUtt* ttr»ikulii *2 ■nUc*>f( r bui 

 obtukb, columnL n|4rr.i |fut»xrtac*— — iVrxifl^ lt*rk«r; lopl. FUmt. 



(10^ ()hi\ii^ni«tM ***»Viriifi(v*p«; [vtriKlribiiftnt foliit^up , *f*|n> "J^fl<«n>, |tr*<t^U vJpnUw m?mbn&tcc«i acoln* 



iiuti> imbntalii ^uit*ntibus v|alii mnnbfiiucctt ingukuliii* lmct»Jali».fTljL* Ltk«ibut <>{>!' w^U, IaCm^Io ornlo i*btato tAinoll^c 



uf^aU cc«0Hiciiti«n r\4ux*luU o>«ticuti* *J «ou v rk>nbut vkignii* piS^<vntit**s c<famnl pu bw oiPSv *\tw btruu»o Auricubaa* 



