333 



latter, however, as illustrated by J. J. Smith, (^^) is almost certainly M. parviflora, 

 R. Br., and not M. porrifolia, Spreng. If this is correct, M. parviflora has an 

 enormous range, extending from Japan, where it has been reported by Mat- 

 sumura,^-^) through the Philippines, South China, Java, New Caledonia, and Tas- 

 mania. The genus itself extends as far south as Stewart Island (New Zealand) 

 in latitude 47°. 



The internal distribution of these genera throughout the States is shown 

 below, along with the rest of the orchid-flora. It is probably sufficient to state 

 here, that it is essentially extra-tropical and but poorly developed in Queensland 

 and Northern Territory. Three of the genera — Adenochilus, Orthoceras, and 

 Cyrtostylis — are monotypic. The first of these is extremely localized and confined 

 to New South Wales. Cyrtostylis occurs within the orchid zones in all States, 

 and Orthoceras has been reported from the southern border of Queensland and 

 from all other States except Western Australia. 



The most important of them are Thelymitra, Prasophyllum, Pterostylis, and 

 Caladenia. The first of these finds its maximum development in Western Aus- 

 tralia with 17 species; the next in New South Wales with 23; Pterostylis in 

 New South Wales and Victoria, each with 27; and Caladenia in Western 

 Australia, with 35. 



Caleana is a small genius of four species. Three of these are confined to 

 Eastern and South Australia; the fourth is peculiar to Western Australia. 



Acianthus is also a small genus with five species. It is distributed along 

 the coast of Eastern and South Australia, becoming reduced to a single species 

 in the West, where it is rare and localized. 



Lyperanthus comprises five species, only one of which occurs in Queensland 

 and South Australia. Three are known in New South Wales, one of which is 

 peculiar to that State ; three also in Western Australia, one of these being 

 limited to that part of the continent ; two occur in Victoria and Tasmania. 



Chiloglottis has seven species, all of which are restricted to the east coast 

 of the continent and Tasmania. 



4. Endemic Flora. 



Australia possesses nine (possibly 10) endemic genera: — 



1. Adelopetalmn, Fitzg. (?) 6. Spiciiloea, Lindl. ^ ^■ 



2. Epihlema, R. Br. 7. Eriochiliis, R. Br. 



3. Diuris, Sm. 8. Burnettia, Lindl. 



4. Anticheirostylis, Fitzg. 9. Leptoceras, Lindl. 



5. Drakaea, Lindl. 10. Glossodia, R. Br. 



Adelopetalitifn, Fitzg., is not admitted by all botanists to separate 

 generic rank. The founder described and figured it as apetalous. He 

 further regarded it as identical with a Queensland plant described 

 by F. M. Bailey *^'^^ under the name of Bitlhophyllnni bracteatum. In 

 the latter plant, the petals are developed, as I have personally observed by an 

 examination of fresh specimens sent to me from Queensland. These segments 

 are hidden by the dorsal sepal and may possibly have escaped the notice of 

 Fitzgerald. If the two plants are really identical as they appear to be, one would 

 have no hesitation in regarding it as an aberrant form of Bulbophyllum. Fitz- 

 gerald's plant was found in the extreme north of New South Wales close to the 

 Queensland border, and Bailey's on the Nerang River in the south of the latter 

 State. 



(19) "Die Orchideen von Java," Atlas, i., 1908), t. 26. 



(20) Index Plant. Japon., ii. (1905), 254. 

 (2i)Bot. Bull., iv. (1891), 17. 



