Aroids, of which the tribes are not restricted in their distribution, have two large endemic genera, Philodendron and Anthurium.
A remarkable feature of the distribution of grasses is its uniformity; there are no great centres for the order, as in Compositae, where a marked preponderance of endemic species exists; and the genera, except some of the smallest or monotypic ones, have usually a wide distribution.
Yellow fever (which first appeared in Cuba in 1647) was long the only epidemic disease, Havana being an endemic focus.
The climate is now less healthy than it was, severe epidemics of malarial fever having frequently occurred, so that malaria now appears to be endemic among the non-European population.
Those of the highest zone are remarkable for the great predominance of predaceous species and of wingless forms. In this last respect they present a striking analogy with the endemic coleopterous fauna of oceanic islands.
Ferns are prominent among the flora, about one-third of which consists of endemic species.
The study of epidemic and endemic diseases generally has brought to light an array of facts which very strongly suggest that an intimate association exists between the soil and the appearance and propagation of certain diseases; but although experiments and observations allow this view to be looked upon as well established, still the precise role played by the soil in an aetiological respect is by no means so well understood as to make it possible to separate the factors and dogmatize on their effects.
Among the other invertebrate groups there is also a large proportion of endemic species.
Equally indecisive is the further exploration as to evidence for the opinion held by other naturalists that the endemic species of the different islands have resulted from subsidences, through volcanic action, which have reduced one large island mass into a number of islets, wherein the separated species became differentiated during their isolation.
There is also a large percentage of endemic species.