148 THE VOYAGE OF H.M.S. CHALLENGER 



Oxalis corniculata is almost ubiquitous iu temperate and sub-tropical countries, and 

 extends into tropical regions in some places. It is regarded as indigenous in Australia 

 and New Zealand and other southern countries. 



RHAMNEL3E. 



Phylica nitida, Lamarck. (Plate XXV.) 



Phylica nitida, Lamarck, EncycL, ii. p. 77, n. 2613; DC, Prodr., ii. p. 35 (excL syn. /3 eriophora) ; 



Harv. and Sond., Fl. Cap., i. p. 502; Velain in Griseb. Veg. du Globe (Edition Franeaise, 



Tchihatchef), ii. p. 819. 

 Phylica arborea, Thouars, Esquisse Fl. Trist., p. 45 ; Carmich. in Trans. Linn. Soc. Lond., xii. 



p. 505. 

 Phylica mauritiana, Boj. in Baker FL Maurit., p. 53. 



Tristan da Cunha, Inaccessible and Nightingale Islands. Thouars; Carmichael; 

 Moseley. 



Also in Amsterdam Island, Bourbon, and Mauritius, and perhaps Madagascar. 



We agree with Mr Velain, loc. cit., in regarding the Bourbon and Amsterdam Island 

 Phylicce as the same species ; and we have no doubt that the Tristan da Cunha plant 

 is likewise the Phylica nitida of Lamarck. 



Thouars was aware of the close affinity of the Bourbon and Tristan da Cunha species 

 of Phylica, for he has the following observation : 1 "II a beaucoup de rapports avec celui 

 qui croit sur les sommets eleves de Bourbon." 



This shrub, or small tree, is polygamously dioecious, and varies considerably in foliage 

 and general appearance at different stages of growth, especially in the Tristan da Cunha 

 group itself. Bourbon specimens which we examined have rather smaller flowers, with 

 .shorter calyx lobes ; otherwise there is less difference between them and some from 

 Tristan da Cunha than between the specimens from the Tristan da Cunha group alone. 

 We have seen no fruiting specimens either from the Mauritius or Bourbon. 



ROSACEA. 

 Acsena sanguisorbae, Vahl. 



Acmna sanguisorba, Vahl, Enum., i. p. 294; Benth., Fl. Austr., ii. p. 434; Hook, f., Handb. FL 



N. Zeal., p. 5G. 

 Accena sarmentosa, Carmich. in Trans. Linn. Soc. Lond., xii. p. 502. 

 Ancistrum sarmentosi/m, Thouars, Esquisse Fl. Trist., p. 44. 



Tbistan da Cunha. Thouars; Carmichael; Moseley; Milne and MacGillivray. 

 Inaccessible and Nightingale Islands. Moseley. 



Also common in south-eastern Australia, Tasmania, New Zealand, the Aucklands, 

 Campbell Island, and Amsterdam Island. 



1 Esquisse Fl. Trist., p. 46. 



