Campbell's Islands.'] FLORA ANTARCTICA. 71 



bear solitary capsules, are 2-3 inches long ; the capsules half an inch long, oblong-turbinate, obscurely glandular, 

 and crowned with the reflexed leaflets of the perianth. In one specimen the labellum was furnished with only 

 four glands in two lines ; in another they extended to the middle with four or six in each series. 



6. Acianthus rivularis ? A. Cunningham, Prodr. Flo?: Nov. Zel. in Hook. Comp. hot. May. 

 vol. ii. p. 376. Lindl. Gen. et Sp. Orchid, p. 397. 



Hab. Lord Auckland's group and Campbell's Island ; on mossy banks in the woods, common. 



I have seen neither flower nor fruit of this plant, and only a withered capsule of what I believe to be Mr. 

 Cunningham's A. rivularis, gathered in New Zealand by Mr. Colenso. The leaves of the former vary very much in 

 size and shape according to their age ; the younger ones are cordate or ovate and cordate at the base, acute ; as 

 they grow older they become orbicular, deeply lobed at the petiole, of the same size and texture and similarly 

 nerved as in the genus Acianthus. 



Dubii generis. 



The following species I am unable to refer to any genus, the flowers being too imperfectly developed for 

 a satisfactory determination. 



7. Tuberibus didymis obovatis ad collum fibras validas horizontaliter emittentibus, caule erecto 

 basi vaginato, vagina elongata integra ore abrupta tenuissime scariosa, folio solitario lineari-elongato 

 semiterete superne canaliculato crasso et subcarnoso basi fisso scapum vaginante, scapo 3-5-floro, 

 floribus spathaceo-bracteatis ut in Orthocerate, perianthii foliolis valde immaturis subcequalibus ex- 

 terioribus late ovatis acutis, interioribus paulo angustioribus, labello late obovato nudo, columna 

 semiterete lobis lateralibus nullis, anthera majuscula terminali. 



Hab. Lord Auckland's group ; in woods near the sea, not uncommon. 



Tubers about 3 lines long, similar to those of Orchis latifolia, but much smaller ; from these the leaf springs 

 at once, its petiole surrounded by a tubular cylindrical sheath. The leaf is 6-8 inches long, 1-2 lines wide, 

 acute or blunt at the apex, green, and of a singularly thick and fleshy texture when recent, coriaceous w'hen dry 

 and quite black. The young scape is covered with what appear sheathing cucullate bracts ; they arise one from 

 the base of each of the flowers ; the latter are very small. 



8. Foliis solitariis (rarius binis) lineari-lanceolatis acutis valde concavis coriaceis nervis paral- 

 lelis basi vaginatis, scapo ut videtur bibracteolato, flore immaturo solitario, perianthii foliolo dorsali 

 late ovato subacuto cucullato lateralibus interioribusque linearibus obtusis, labello ovato disco ob- 

 scure 6-7-glanduloso, anthera terminali. 



Hab. Lord Auckland's group ; in woods, rare. 



The leaves here are 2-3 inches long, very concave ; the petiole inclosed in a long scarious sheath which 

 is split above ; the flower is small and inclosed in two sheathing bracts. This plant has some points in common 

 with Chiloglottis, Br., but the leaves are not like those of that genus. 



