The Carnivorous Plant FAQ v. 11.5
- courtesy of -
The International Carnivorous Plant Society

Q: How many species are in each carnivorous plant genus?

A: The syndrome of carnivory has developed many times in distinct botanical families. There is not universal agreement on how to group these families into higher taxonomic entities. Two ways of doing this are displayed below. The first follows a classical, standard approach to taxonomy. The second way uses a newer set of orders and familial arrangements. This new assessment is partially based upon chemical characters, is still being refined, and is largely derived from Barthlott et al. (2007) and communication with Jan Schlauer.

Below you can see the orders (first column, red text), families (second column, blue text), and genera with species information (third column, green text) for all the carnivorous plant genera. The numbers of species for each genus are approximately current as of this document's freshness date at the bottom of the page, and are derived from the presentation presented in this FAQ. Species numbers followed by a plus sign indicate cases in which I am aware of additional species descriptions in press. For my most recent assessments of the currently described species in each genus, refer to the genus treatments that follow in this section of the FAQ.

Note that in the genera Brocchinia, Catopsis, Passiflora, and Stylidium, the numbers of species indicated are the numbers that have been suspected or proven of carnivory. There are additional, as-yet-not-considered-carnivorous species in these genera.

I admit to a certain arbitrariness in these tables. Some plants which are probably not truly carnivorous (such as Capsella bursa-pastoris) have been excluded from the following tables, while others (such as Ibicella and Passiflora have been included). This table is to be read and interpreted by you.

The Classical Arrangement

A Newer System

1I am not quite sure of where these plants would go in the new system, so beware!

Page citations: Barthlott, W. et al. 2007; Juniper et al. 1989; Rice, B.A. 2006a; Schlauer, J. 2002; personal observations.

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Revised: March 2012
©Barry Rice, 2005