ORCHIDACE/E. 385 
I doubt whether this plant really belongs to Gastrodia, notwithstanding 
its apparent resemblance ; for the pollen is described as pulverulent, and 
the stigma is represented in Blume's figure at the apex of the column. 
Div. 2. EUARETHUSE.E. 
Stigma ad columne apicem. Pollen granulosum, aut pulvereum. Folia 
vaginantia, membranacea, sæpiùs pilosa, cum caule continua. Radices 
siepissime tuberculos amylo repletos promentes. 
‘CCXVI. MACDONALDIA. 
Macdonaldia. R. Gunn in litt. 1838. Lindl. Bot. Reg. App. No. 217. 
Perianthium patentissimum quale. Sepala et petala conformia; his an- 
gustioribus. Labellum petalis simile, omnind calvum. Columna brevis, 
clinandrio postic® elevato carnoso trilobo, lobis lateralibus declivibus, 
nunc appendiculatis. Anthera tomentosa, antice intrusa, valvis mem- 
branaceis. Herbs Australasice flexuose, flexurà qudque folio 
suffultà lineari. Flores lutei, v. purpurei, terminales, solitarii v. rariüs 
gemini aut plures. 
This genus differs from Thelymitra as Cephalanthera from Epipactis. 
$ 1. Vera; clinandrii lobis lateralibus obsoletis. 
l. MacpoNArDiA Smithiana. Gunn mss. Lindl. in Bot. Reg. App. no. 217. 
LI 
M. caule unifloro 3-phyllo, floribus luteis, sepalis petalisque obtusis, cuculli 
trilobi glabri laciniis lateralibus nanis intermedià mutica, antherà to- 
mentosá, 
Hab. in Tasmannia, in agris sterilibus arenosis’ prope Circular Head, 
Gunn, 945 (hab. s. sp. comm. cel. inventor.) 
2. MacpowarpiA concolor. Lindl. l. c. no. 218. 
M. caule triphyllo subbifloro, floribus luteis, sepalis petalisque obtusis, 
cuculli trilobi glabri laciniis lateralibus majoribus rotundatis, intermedia 
minimá glabra. 
Thelymitra flexuosa. Endl. dec. no. 29. 
Hab. in N. Hollandie orà occidentali ad sinum regis Georgii, Collie. (hab. s. 
sp. comm. soc. Linn. Lond.) 
A plant with all the habit of the last. 
3. Macponaxpia antennifera, Lindl. l. c. t. 9. C. no. 219. 
M. caule subtriphyllo paucifloro, floribus luteis, sepalis petalisque obtusis, 
clinandrio a tergo appendicibus 2 carnosis clavatis emarginatis aucto. 
Hab. in N. Hollandie orà occidentali; Swan River, Drummond; ad Au- 
&ustam, Da. Molloy. (hab. s. sp.) 
The roots are eaten by the natives of Augusta according to Mrs. Molloy. 
§ 2. Biaurella; clinandrii lobo medio obsoleto lateralibus appendiculatis. 
4. MacpoNaLDIA variegata. Lindl. l. c. no. 220. 
M. floribus purpureis, sepalis petalisque linearibus acuminatis, clinandrii 
