331 



from Formosa, (^> and Ames^^^) records the Javanese species (C. arachnites, Bl.) 

 from the PhiHppines ; 3 endemic species also occur in different islands in the 

 South Pacific. Altogether some 17 species have been described. Schlechter^^*^ 

 speaks of these plants in New Guinea as typical mountain-climbers, as they have 

 been collected at considerable heights. This has also been our experience in 

 Australia, and Baron von Mueller ^^^^^ has likewise described a member of this 

 genus from Samoa, where it was found growing at an altitude of 3,000 feet^ 

 (upwards of 900 metres). 



Dipodiuni, R. Br., has also been placed among the exotic genera, although it 

 is admittedly difficult to decide on the immigrant nature of this genus, as it 

 occurs sporadically in the Malay Archipelago, New Guinea, Celebes, New 

 Caledonia, and New Hebrides. The fact that some of its members are epiphytic 

 and others terrestrial saprophytes, appears to indicate its affinities with a tropical 

 flora. Including our own two species, 11 have been described. Further know- 

 ledge of the orchid vegetation of New Guinea may dispel any doubts as to the 

 position of this particular genus. 



3. Australian Types, not Endemic. 



The following are regarded as true generic types originating in Australia, 

 but not endemic : — 



1. Calochiliis, R. Br. 8. Acianthus, R. Br. 



2. Thelymitra, Forst. 9. Lyperanthiis, R. Br. 



3. Orthoceras, R. Br. 10. Cyrtostylis, R. Br. 



4. Prasophyllum, R. Br. 11. Caladenia, R. Br. 



5. Microtis, R. Br. 12. Adenochilus, Hook. f. 



6. Pterostylis, R. Br. 13. Chiloglottis, R. Br. 



7. Cale<ina, R. Br. 



The distribution of these genera is as follows : — 



1. Calochilus, R. Br. Australia 5, New Zealand 2 (in common with Aus- 



tralia), New Caledonia 1. Total species 6, of which 4 are endemic. 



2. Thelymitra, R. Br. Australia 30, New Zealand 12 (5 in common with 



Australia and 7 endemic), New Caledonia 2(1 endemic, 1 in common 

 with Australia), Java 1 (in common with Philippines), Timor 1 

 (endemic). Total 40, of which 34 are endemic. 



3. Orthoceras, R. Br. Australia 1, New Zealand 1 (in common with 



Australia). Total 1. 



4. Prasophyllum, R. Br. Australia 58, New Zealand 4 (of which 2 are in 



common with Australia), New Caledonia 1 (doubtful). Total 60, 

 of which 58 are endemic. 



5. Microtis, R. Br. Australia 9, New Zealand 1 (in common with Aus- 



tralia), New Caledonia 2 (of which 1 is endemic and 1 in common 

 with Australia), 1 Australian species reported from Java, Formosa, 

 Philippines, Japan, and South China. Total 10, of which 8 are 

 endemic. 



6. Pterostylis, R. Br. Australia 43, New Zealand 12 (of which 8 are 



endemic and 4 common to Australia), New Caledonia 4<^^^^ (of which 

 1 is endemic and 3 in common with Australia), New Guinea 2 

 (endemic). Total 54, of which 50 are endemic. 



(12) A species which appears to be identical with that of Hayata is reported by Rogers 

 and White from British New Guinea in Trans. Roy. Soc. S. Austr., xliv. (1920), p. 118. 



(13) "Orchidaceae," v. (1915), 19. 



(W) "Die Orchidaceen von Deutsch-Neu-Guinea" (1914), 26. 

 (^5) Wing's Southern Sc. Rec, i. (1881), 172. 

 P6)Rendle, Journ. Linn. Soc, xlv. (1921), 253. 



