8 Mr. James Cosmo Melvill on 



well to give the locality too precisely ; but the plant is 

 abundant on the outskirts of St. Peter's Port, in one or two 

 contiguous places on old and somewhat ruinous walls of 

 considerable height. Mr. Buchanan Brown' counted one 

 hundred and fifty blooms, at least, on August i6th last. 



Doubtless the plant is an established introduction, but 

 when and by whom is never likely to be solved. Old walls 

 and ruins seem to be the favourite habitat of this plant, 

 wherever found. 



The Rev. R. P. Murray, from whom I received specimens 

 collected in 1888 near Oporto, Portugal, writes me that it 

 grew plentifully on walls by the River Douro, opposite 

 Oporto, and that he saw it nowhere else, but was told that 

 it grew on rocks about a mile further away. 



T. cceruleiun is restricted, according to Nyman, to the 

 following countries : — 



Lusit. bor.(introd.?). Hispania merid. orient. Italia merid.; 

 Sicilia (Palermo) ; and it likewise occurs on the Mediterra- 

 nean coasts of western North Africa, in Algeria abundantly 

 (Bourgeau, Jamin, Munby, &c.), and Morocco (Ball). 



It does not appear in the more eastern portion of 

 Mediterranean Europe or Africa, and is not mentioned in 

 Boissier's Flora Orkntalis (Vol. III., p. 961 sqq.), the 

 species Jacgnmi (Sieb.), Riuneliciini (Hampe), tubnlosiim 

 (Boiss.), asperuloides (Orph.), and myrtifoliiini (Boiss.) 

 taking its place. 



Five species are found, according to Nyman, (Consp., 

 Fl. Fu>'., p. 485) in Europe proper, viz. : T. cocruleiun (L.), 

 lanceolatuni (Guss.) confined to Sicily, Rnnielicuui (Hampe), 

 Jacqnini (Boiss.), and aspcruloides (Boiss. and Orph.), this 

 latter peculiar to M. Chelmos in the Peloponnese. 



Morocco possesses, besides T. cccrnleiun, one endemic 

 species, angustifoliiiui (Schousb.), of peculiar habit {c.f.. 

 Spec. Flor. Marocc, \x\ Journ. Linn. Soc, xvi., pp. 555, 556), 

 by John Ball. 



