THE BOTANY OF GOUGH ISLAND. 37 



Distribution. Tristan da Cuulia and Inaccessible Island, and southern temperate 

 regions except South Africa. 



NERTERA DEPRESSA, Gaertn., var. OBTUSA, Rud. Br., var. nov. 



A variety distinct from the normal Nertera depressa in having all its leaves obovate 

 with no suggestion of acuteness. 



Among the specimens of Nertera depressa gathered on Gough Island only one 

 plant of this variety was found. In the Kew Herbarium there is one specimen from 

 Inaccessible Island (Moseley, Inaccessible Island, 16.8.73) of this variety. The other 

 specimens of this plant from Tristan da Cunha belong to the typical Nertera depressa, 

 and the variety does not appear to occur elsewhere. 



Distribution. Inaccessible Island. 



GNAPHALIUM PYRAMIDALE, T/HIU. Esq. Fl. Trist., p. 40; D. C. Prodr., vi. p. 234; 

 Hemsl. Chall. Bot., i. n. p. 151, t. 26. G. Thouarsii, Spreng. Si/st. Vey., iii. p. 473. 

 Common up the glen. 

 Distribution. Tristan da Cuuha and Inaccessible Island. 



COTULA GOUGHENSIS, Rud. Br., sp. uov. (Plate IV.) 



Herba annua erecta vel suberecta, 25 cm. alta inferne multe ramosa ; folia 

 sessilia fere amplexicaulia, bipinnatisecta, segmentis lanceolatis in apicem acutum 

 rotundatis ; capitula folia non superantia, 8 mm. lata ; involucri bractese late ovatse vel 

 fere rotuudatse, marginibus integris ; flores dimorphi exteriores $ uniserrati sine 

 corollis, interiores cum corollis ; achenia compressa glabra. 



This species is quite distinct in its much blunter leaves and broad involucral bracts 

 from the Nightingale Island species, Cotula Moseleyi. It is near Cotula coronifolia, but 

 differs in having broad bracts and a smaller inflorescence. Cotula coronifolia is also in 

 general a much coarser plant. The only species of Cotula near this species as regards 

 the broad bracts is Cotula integri folia, but in other respects this is quite distinct. 



Endemic in Gough Island, where it is very plentiful. 



HYPOCHCERIS GLABRA, Linn. Sp. PL, 810; D.C. Prodr., vii. p. 90. 

 Very probably an introduced plant here, as Mr Hemsley considers it to be in 

 Tristan da Cunha. 



Distribution. Almost cosmopolitan. 



SONCHUS OLERACEUS, Linn. Sp. PL, 792. 

 Common : probably introduced. 



Distribution. Tristan da Cunha and Inaccessible Island, and generally throughout 

 temperate regions. 



RUMEX OBTUSIFOLIUS, Linn. Sp. PL, 335. 



Probably introduced. It has not been recorded previously from the Tristan da 

 Cuuha group. 



Distribution. Very widely spread in northern and southern hemispheres. 



