390 ORCHIDACE. 
15. Prerosrtyuis furcata. 
P. foliis in caulem ascendentibus infimis tantüm stellato-patentibus ovato- 
lanceolatis acutis, bracteà foliaceà cucullatà ovario breviore aut parüm 
longiore, sepalis glaberrimis lateralium acumine ipsis longiore, labelli 
lamina lineari obtusà, appendice apice fimbriatà. 
Hab. in T'asmannid. (hab. s. sp. a cel. Gunn, 602.) 
16. PrerostTyuis cucullata. R. Br. Prodr. 397. 
P. foliis ovalibus acutis vel in caulem ascendentibus v. omninó radica- 
libus, bracteà foliaceà cucullatà, sepalis extüs tomentosis lateralibus 
acutis galez subzqualibus, labelli lamina lineari obtusà glabra, appen- 
dice apice fimbriatà. 
Hab. in Tasmannid ; in solo fertili argillaceo, florens Sept. Oct. Nov. ; nec 
non prope Circular Head in collibus arenosis, ubi omninó pygmea, 
Gunn, 904, 905, 355. (hab. s. sp. a cel. Gunn.) 
17. PrEnosTYLis dubia. R. Br. Prodr. 328. 
P. “ foliis radicalibus . . .? caulinis duobus, florali pedunculo breviore, 
perianthio pubescentulo, labelli laminà integrà appendice penicillata.” 
Hab. in Nova Hollandia, R. Brown. 
§ 4. Foliis omnibus radicalibus stellatis, caule multifloro vaginato. 
18. PrERosTvris mutica. R. Brown, Prodr. 398. 
P. foliis radicalibus stellatis, racemo spirali, labiis calycis obtusiusculis, 
labelli laminà oblongà membranaceà unguiculatà. 
Hab. in Nov. Hollandia ; ad Portum Jackson, R. Brown; in sylvis apertis 
per coloniam, florens Sept. 4. Cunningham; in Tasmannia, in collibus 
arenosis juxta Circular Head, alibique, copiose, Oct.; in solo argil- 
laceo pingui, Nov. Gunn, 900, 901, 605. (hab: s. sp.) x 
The labellum of this species being vertical when at rest, displaying the 
small black appendage to view, its sudden elastic spring upwards to cover 
the orifice of the flower is very obvious. It resumes its old position after 
atime. R. Gunn. 
19. PrERosTYLIS gibbosa. R. Br. Prodr. 328. 
P. foliis radicalibus stellatis, vaginis scapi distantibus, labiis calycis acumi- 
natis, labelli lamin& crassiusculà basi utrinque unisetA supra nuda. 
Hab. in Nova Hollandia, prope Portum Jackson, R. Brown. (hab. s. sp. 4 
cel. inventore.) 
90. PrERosTYvLIs rufa. R. Br. Prodr. 397. 
P. foliis radicalibus stellatis, vaginis scapi remotis, labiis calycis acumi- 
natis, labelli laminá crassiusculà obtusA indivisà ciliata. 
Mab. in Nova Hollandia; prope Portum Jackson, R. Brown; in coloniz 
terris interioribus, Mitchell. (hab. s. sp.) 
§ 5. Foliis omnibus radicalibus stellatis, caule unifloro vaginato. 
21. Prerostyris curta, R. Br. Prodr. 396. Guillem. ic. lith. t. 2. Bot. 
Mag. 58.-t. 3086. 
P. foliis radicalibus stellatis, bracteis scapi praeter floralem 2-3, flore 
