Drosophyllum

The above named three genera, namely Drosophyllum, Roridula, and

Insectivorous Plants Charles Darwin 1845

Endemism at the higher level is very reduced, with only two endemic families (Aphyllanthaceae and Drosophyllaceae), both represented by single species, Aphyllanthes monspeliensis and Drosophyllum lusitanicum.

Biological diversity in the Mediterranean Basin 2008

-- The linear leaves of Drosophyllum differ but slightly from those of certain species of Drosera; the chief differences being, firstly, the presence of minute, almost sessile, glands, which, like those of Dionaea, do not secrete until they are excited by the absorption of nitrogenous matter.

Insectivorous Plants Charles Darwin 1845

But when we consider the vast number of the tentacles on both surfaces of the leaves of Drosophyllum, and on the upper surface of the leaves of

Insectivorous Plants Charles Darwin 1845

The most important one is that the tentacles of Drosophyllum have no power of movement; this loss being partially replaced by the drops of viscid

Insectivorous Plants Charles Darwin 1845

It thus appears that Drosophyllum digests albumen and fibrin rather more quickly than Drosera can; and this may perhaps be attributed to the acid, together probably with some small amount of the ferment, being present in the secretion, before the glands have been stimulated; so that digestion begins at once.

Insectivorous Plants Charles Darwin 1845

Drosophyllum, the amount of secretion never appeared to be in the least increased.

Insectivorous Plants Charles Darwin 1845

In Byblis the glands consist of a single layer of cells, supported on a unicellular pedicel; in Roridula they have a more complex structure, and are supported on pedicels formed of several rows of cells; in Drosophyllum they further include spiral cells, and the pedicels include a bundle of spiral vessels.

Insectivorous Plants Charles Darwin 1845

I was much surprised at the leaves of Drosophyllum being always rolled backwards at their tips, but did not know that it was a unique character.

More Letters of Charles Darwin — Volume 1 Charles Darwin 1845

Milk, however, which acts so energetically on Drosera, seems rather less effective on Drosophyllum, for the glands were only slightly darkened by an immersion of 1 hr.

Insectivorous Plants Charles Darwin 1845