1 APPENDIX. 



species, is given at Plate VIII. C. From these I think it 

 necessary to distinguish those species which, like 7 h. flex- 

 uosa, Endl. and Th. venosa, R. Br., have the anther incum- 

 bent, and not parallel with the stigma. These have in fact 

 been separated by Mr. Gunn, who names the species met 

 with in Van Dieraen's Land Macdonaldia, after Mrs. Smith, 

 nee Macdonald, a lady who has examined the Orchidaceous 

 plants of that island with great care, and from whom a most 

 beautiful series of dried specimens has reached me through 

 the good offices of Mr. Gunn. Of two of these with yellow 

 flowers, viz. M. Smithiana,^" and antennifera, there are 

 figures at Plate IX. B & C ; much handsomer than either is 

 M, variegata, with purple speckled flowers. 



Next to Thelymitra in point of beauty are the species of 

 Glossodia, Dluris, and Caladenia ; among which are nume- 

 rous species of the most exquisite forms and gayest colours. 

 Glossodia Brunoiiis, Endl., has violet flowers two inches in 

 diameter, spotted with brilliant purple ; both it and G. emar- 

 ginata^^* have large roots, enveloped in numerous coarse skins, 



C-^"^) Macdonaldia. Perianthium regulare, patulum. Labellum sessile, foliolis 

 confonne. Columna semiteres triloba, cucuUata, laciniis nunc appendicu- 



latis. Antbera terminalis, in stigma incumbens Caulis flexuosus, foli- 



osus, apice pauciflorus. (§ 2. Biaurella ; cuculli lobo medio obsolete, late- 

 ralibus appendiculatis.) 

 Macdonaldia Smithiana (Gunn mss.) ; caule unifloro 3-phyllo, floribus luteis, 

 sepalis petalisque obtusis, cuculli trilobi glabri laciniis lateralibus nanis. (Van 

 Diemen^s Land.) Tab. IX. B. 



(218) Macdonaldia concolor ; caule tripbyllo subbifloro, floribus luteis, sepalis 

 petalisque obtusis, cuculli trilobi glabri laciniis lateralibus majoribus rotun- 

 datis. (Thelymitra Jlexuosa, Endl.) 



(2i<j) Macdonaldia antennifera (Tab. IX. C.) ; caule subtriphyllo paucifloro, flori- 

 bus luteis, sepalis petalisque obtusis, cucuUo a tergo appendicibus 2 carnosis 

 clavatis emarginatis aucto. 



(220) Macdonaldia (Biaurella) variegata ; floribus purpureis, sepalis petalisque 

 linearibus acuminatis, cuculli laciniis lateralibus lanceolatis subcarinatis in- 

 termedia obsoleta, antbera carnosa obtusa elongata loculis brevibus semi- 

 circularibus membranaceis. 



(221) Macdonaldia (Biaurella) spw'afe; folio radicall spirali caulino solitario ovato, 

 caule unifloro, floribus purpureis, cuculli laciniis lateralibus carnosis dolabri- 

 formibus intermedia obsoleta, antbera obtusa apice papillosa. 



(222) Macdonaldia (Biaurella) cyanea ; caule stricto subbifloro, floribus cyaneis, 

 cuculli laciniis lateralibus apice dentatis intermedia obsoleta, antbera apice 

 triloba. (Van Diemen's Land.) 



(223) Macdonaldia ^)eH05«.=Thelymitra venosa. R.Br. 



^'^'^*^ Glossodia (Elytranthe) emarginata ; caule unifloro, columnee ala integer- 



