
Endemism.
The area is so isolated that it might be expected to show a certain amount of endemism. This is most readily illustrated by the three species Celmisia Mackaui, Veronica Lavaudiana, and Senecio saxifragoides, Celmisia Mackaui has been reported from Mount Fyffe by H. B. Kirk, but the report has not been confirmed; and Veronica Lavaudiana has been recorded by Lyall, W. T. L. Travers, and J. B. Armstrong from the river-beds of the Canterbury Plains. Now, V. Lavaudiana is a true chasmophyte, and I should be very much surprised to see it growing in the shingle-bed of one of our Canterbury rivers. It might perhaps be expected in the mountain gorges of these rivers, but I have not seen it there, and much doubt its occurrence elsewhere than on Banks Peninsula. Travers records it from the Ashley, but though I have been at many points of the Ashley river-system I have seen nothing resembling V. Lavaudiana there. A form of V. Raoulii certainly occurs at White Rock in small quantity; and

V. Lavaudiana could scarcely, if occurring, have been completely overlooked by Cockayne, Wall, and myself. I must therefore consider the above three species as endemic on the peninsula till more definite evidence is brought to the contrary.
Cotula Haastii is another species which may be endemic on the peninsula; though recorded from the plains by Haast, it has not been found there recently. There are other plants which are here represented by varietal forms—e.g., Aciphylla squarrosa, Angelica montana, Anisotome Enysii, Myosotis australis, Ourisia macrophylla, Veronica Lyallii, &c.; but as it is not my intention to deal with critical species in this paper I am leaving these out of consideration here. Enough has been said to show that there is sufficient endemism in the area to suggest its isolation for a long time from any other portion of the country.
