FOOTNOTES:
[1]The Canary Islands are situated about 3° farther south, and 280 miles distant from Mogador. They are thus opposite a much more hot and arid part of the African coast than that north of the Atlas. The large island of Fuertaventura is only about 70 miles from the continent south of Oued Noun.
[2]Journ. Linn. Soc. vol. xvi. p. 297.
[3]A term first applied by Webb to the Flora of the Canarian Archipelago, but which should also include the Flora of Madeira (as Ball makes it do in the above mention of it), the Azores, and perhaps also of the Cape de Verde Islands, which together form either a distinct botanical province, or a marked subdivision of the Mediterranean province.
[4]No less than nine very distinct genera are confined to the Canaries or Madeira or both:—Parolinia, Bencomia, Visnea, Phyllis, Plocama, Canarina, Musschia, Bosea, and Gesnouinia. The only endemic genera in Marocco are Argania, Hemicrambe, Ceratocnemum, and Sclerosciadium.
[5]On the other hand, many peculiar species have been added to the Canarian Flora since the date of the publication of the Phytographia (1836-50).
[6]The genera, which are unduly multiplied in the Phytographia, are here reduced to the standard adopted in the Spicilegium. The species are, unfortunately, also inordinately multiplied in the former work, which seriously vitiates the table: this, however, it is impossible to set right. On the other hand, some of the Canarian genera have been largely added to by later explorers.
[7]In this, the most curious case of all, the species were elaborated by Bentham, and may, therefore, be depended upon. A second Maroccan Micromeria, allied to a Canarian one, has been found by M. Cosson’s collectors, as I am informed by Ball, whilst this sheet was passing through the press.
[8]This estimate is subject to the same deductions as I have referred to in note 2, [p. 407.] On the other hand, were the many obviously introduced species to be struck out of Webb and Berthelot’s enumeration, the proportion of peculiar species would be considerably augmented.
[9]Whilst this sheet was passing through the press, I am informed that M. Cosson’s collectors have found Bowlesia in South Marocco. No doubt this is another case of that accidental diffusion of Macaronesian species alluded to by Ball. (See [p. 405.])