ARTICLE XX.-GRAMINA OF THE SUBANTARCTIC ISLANDS OF 



NEW ZEALAND. 



By Donald Petrie, M.A., Ph.D. (sometime a Fellow of the Linnean Society, London). 



MiCEOLAENA, R. Browii. 

 Distribution. — Australia and New Zealand. 



Microlaena Thomsoni, Petrie. 



Ehrharta Thomsoni, Petrie, Trans. N.Z. Inst., xii (1880), 356, pi. 10. 



Auckland Islands ; F. R. Chapman ! (January, 1890). 



No specimen of this grass was met with on the expedition. Endemic in the 

 New Zealand area, and ranging on the main islands from Mount Rochfort (south- 

 west Nelson) to the south of Stewart Island, where it descends to sea-level. 



Dr. Stapf has pointed out that the New Zealand grasses hitherto referred to 

 the genus Ehrharta, Thunb., do not belong to that genus. Mr. T. F. Cheeseman, 

 F.L.S., F.Z.S., was, I believe, the first to indicate their true position, in the genus 

 Microlaena. 



Microlaena avenacea (Raoul), Hook. f. 



Microlaena avenacea, Hook, f., Handb. N.Z. Flora, 320. Di'plax avenacea, 

 Raoul, " Choix de Plantes de la Nouvelle Zelande," 11, t. 3; Hook, f., 

 Fl. Nov. Zel., i, 289. 



Auckland Islands ; J. S. Tennant ! 



A single specimen, in fair condition, was collected. This is the first time the 

 species has been observed on the subantarctic islands. The leaves are inrolled, and 

 not broad and fiat, as in the typical form. 



It ranges from Mangonui (Auckland Peninsula) to the Auckland Islands. The 

 species is endemic in the New Zealand area. 



HiEROCHLOE, Gmel. 

 Distribution.— -The temperate and frigid zones of both hemispheres. 



Hierochloe redolens (Forster), R. Brown. 



Hierochloe redolens, R. Brown, Prodr., 209 ; Hook, f., Fl. Antarct., i, 92. 

 H. antarctica, R. Br., Prodr., 209. Holcus redolens, Forster, Prodr., n. 563. 

 Torresia redolens, Roem. & Schult., Syst., ii, 516. 



Auckland Islands ; J. S. Tennant ! (a single specimen was collected ; now re- 

 corded for the first time from this habitat). Campbell Island ; R. M. Laing (these 

 specimens were not in flower) ; J. Buchanan. 



The species occurs also in Tasmania, Victoria, and Fuegia. 



