116 TRANSACTIONS AND PROCEEDINGS OF THE [Szss. 1xrx. 
as followed by Bentham, recommends itself by the separa- 
tion of those species furnished with bulbs from all the 
others that have fibrous roots. The vegetative organs of 
large groups of species must be considered of prime import- 
ance for purposes of classification, when they show such 
marked differences, as observed in Droseras, seeing that 
they are specially adapted to the primary needs of the 
plants. In this case, however, in addition to the contrast 
between the bulbous and fibrous roots, there is a very 
apparent distinction between the styles of the bulbous forms 
as a whole and those of the section Rorella, these organs 
being multifid in the one series, and simple or only slightly 
divided in the other, with very few exceptions on either 
side. For the primary division of the genus the character 
of the root, and to a less extent of the styles, is taken; but 
the organs made use of for the further subdivision—stem, 
leaves, and flowers—are applied to an unequal degree in 
the two sections, the vegetative organs being of greater 
importance in Ergaleium, while in Rorella those of the 
reproductive system come more into force. In Ergaleium 
the styles are more uniform, and the stem and leaves show 
greater variability ; but in Rorella the stem and leaves are 
varied to a less extent, while the styles and inflorescence 
generally are more heterogeneous and furnish the characters 
required for the formation of smaller groups. 
The fibrous roots and bifurcated styles of Drosera Banksw 
seem, therefore, to forbid any doubt as to its position, namely, 
in section Rorella, near D. indica, a species with an elongated 
leafy stem, though without stipules, which are found in the 
majority of the species of the section, and possibly in all 
except those of annual duration. The transference of D. 
Banksti, with its elongated stem and stipules, to Rorella, 
would consolidate rather than confuse the arrangement, 
seeing that some caulescent species comprised in the Cape 
flora are already in that section, and have mostly, though 
not all, well-developed stipules. The division of the whole 
genus, according to the root-system, thus establishes two 
parallel series of similar extent, each comprising groups of 
forms, more or less comparable with those of the other 
series. 
There is a marked resemblance, from various points of 
