This species was collected in 1875 and not reported again for 90 years.

Since this species was collected between 1886 and 1888 it has not been seen again.

One or two more species have been collected but not described.

In the most recent survey, 77 species were collected, of which around half are probably new to science.

This species has not been collected since its original description in 1896.

More than 4,500 species were collected in the garden, including 1,200 tropical ones.

Most of the plants grown in these early gardens are likely to have been species collected from the wild.

Many unclassified species have been collected and there is a need for further studies.

Several species, including six undescribed ones, were collected around the island, and more are expected to be found.

The name reflects the rainy conditions under which the species was collected.