244 APPENDIX. 



will be found in a paragraph (p. 234) specially dealing with similar phenomena. Quite 

 recently a distinct new species of the otherwise Mexican and Guatemalan genus Hauya, 

 which differs from Fuchsia in having a woody 4-valved capsular fruit, instead of a fleshy 

 berry, has been discovered in Lower California — a fact the more noteworthy because the 

 general character of the flora is not Mexican. 



Loasacece. 



With the exception of the monotypic Kissenia, which is widely spread in Africa and 

 Arabia, this order is wholly American. There are ten genera and about one hundred 

 species, having their centre in the Andes. Mentzelia oligospermia, a northern species, 

 is found as far eastward as Illinois; M.floridana inhabits Florida, and a very few 

 species of Loasa and Mentzelia occur in South Brazil and Buenos Ayres, otherwise the 

 order is essentially western. Three of the Mexican genera enter California, where they 

 are collectively represented by about a dozen species, including seven Mexican, three of 

 which reach British Colombia. Mentzelia aspera, a common Peruvian plant, is abun- 

 dant in all the islands of the Galapagos group from the sea-shore to the tops of 

 the mountains *. This is also common, and the only species of the order in the West 

 Indies. The Loasacese are all herbaceous, and most of them have showy flowers, 

 but the most brillantly coloured of them are armed with exceedingly virulent stinging- 

 hairs. 



Turneraeece. 

 The Turneracese are divided between Africa, including the Mascarene Islands, and 

 America. In this order, as in the Passifloreae, recent explorations have increased the 

 number of generic forms inhabiting the African region beyond the American, though 

 the number of American species is much the higher. Including the Eodriguez 

 arboreous Mathurina, which, however, is hardly generically separable from Erblichia, 

 represented by one species in Panama and one in Madagascar, there are six genera 

 in the African region, two of which are also represented in America ; whereas in 

 America there are only three, even excepting Piriqueta as distinct from Turnera. 

 Some of the generic distinctions are, however, not very strong, for Urban f , perhaps 

 rightly, reduces Erbliehia to Piriqueta, and retains Mathurina. On the other hand, 

 out of the eighty-four described species, seventy are American, ranging from North 

 Carolina (one species) to Argentina and Uruguay; the greatest concentration being 

 in Brazil, where there are fifty-four species. It is singular that the order is unrepre- 

 sented in Chili, though it is absent from western North America. Besides the one 

 species that reaches North Carolina, there are two others in South Florida. The 



* Anderson, < Om Galapagos-Oarnes Vegetation,' p. 94. 



t Jahrbuch des koniglichen botanischen Gartens . . . . zu Berlin, ii. 1883, p. 78. 



