I have been studying citrus and it's relatives for quite some time now. When I started to make study of the subject, I wanted to have a broad scope of knowledge on the subject but had to decide just where I would draw the line. Just where would I say ok, this is the start of where I would like to study citrus. So I decided to start at the familty level. I would study Rutaceae and put together as much info as I could on this Family. Rutaceae is part of the following scientific classification:

Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Sapindales

The Order of Sapindales contains 9 families, they are:

Sapindales---------BIEBERSTEINIACEAE

           :-------KIRKIACEAE

           :

           :   :---RUTACEAE

           :---:---MELIACEAE

           :   :---SIMAROUBACEAE

           :

           :   :---ANACARDIACEAE

           :---:---BURSERACEAE

           :

           :-------SAPINDACEAE

           :-------NITRARIACEAE

From here I continue to follow Swingle's subfamily example with a bit of modern updating. Here is the breakdown:

RUTACEAE----------Rutoideae

          :   :---Toddaliodeae

          :

          :-------Dictyolomatoideae

          :-------Flindersioideae

          :-------Spathelioideae

          :-------Aurantiodeae

          :

          :.......Rhabdodendroideae (No longer part 

          :                          of Rutaceae)

          :.......Cneoraceae (Transitional, close to 

          :                   Rutaceae and Meliaceae)

          :.......Unknown (Not classified in any Subfamily 

                           that I could see)

Aurantioideae---Clauseneae----Micromelinae----------------------------Micromelum

              !            !                  !-----------------------Aulacia

              !            !

              !            !--Clauseninae-----------------------------Glycosmis

              !            !                  !-----------------------Clausena

              !            !                  !-----------------------Murraya

              !            !                  !-----------------------Bergera

              !            !

              !            !--Merrilliinae----------------------------Merrillia

              !

              !-Citreae----!--Triphasiinae-------Wenzelia-------------Wenzelia

                           !                  !                  !----Monanthocitrus

                           !                  !                  !----Oxanthera

                           !                  !                  !----Merope

                           !                  !

                           !                  !--Triphasia------------Triphasia

                           !                  !                  !----Pambrus

                           !                  !

                           !                  !--Luvunga--------------Luvunga

                           !                                     !----Paramignya

                           !

                           !--Citrinae-----------PCFT-----------------Severinia

                           !                  !                  !----Pleiospermium

                           !                  !                  !----Burkillanthus

                           !                  !                  !----Limnocitrus

                           !                  !                  !----Naringi

                           !                  !

                           !                  !--NCFT-----------------Citropsis

                           !                  !                  !----Atalantia

                           !                  !

                           !                  !--TCFT-----------------Fortunella 

                           !                                     !----Eremocitrus

                           !                                     !----Poncirus

                           !                                     !----Clymenia

                           !                                     !----Microcitrus

                           !                                     !----Citrus

                           ! 

                           !--Balsamocitrinae---Talbog Group----------Swingela

                                              !  

                                              !-Bael-Fruit Group------Afraegle

                                              !                  !----Aeglopsis

                                              !                  !----Balsamocitrus

                                              !

                                              !-Wood Apple Group------Limonia

                                                                 !----Feroniella

PCFT = Primitive citrus Fruit Trees
NCFT= Near Citrus Fruit Trees
TCFT= True Citrus Fruit Trees

The most noteable differences are
1) Aulacia was added to Micromelinae. I did this because I was unable to find 1 to 1 synonym ratio for that species.
2) Bergera was added to Clauseninae. Bergera was broken out from Murraya in recent years.
3) Naringi replaced Hesperethusa a few years back and is now a synonym.
4) Limonia replaced Feronia a few years ago as well and is now a synonym.

So, you may be asking yourself, just what is my point. Well, since I've been studying this information and collecting data I figured I would share my findings as I went along. Also as people read my post someone may find something wrong with my data and choose to correct it. It may also give rise to a further sub discussion, etc.

I hope the info I have posted here is informative and you guys get something out of it. In following posts over time in the forum I will be some posting info on the various species of Rutaceae. These posting may include a hyperlink to a spreadsheet form for the particular species and a link to a Lotus 1-2-3 and Excel copy of the data. Always feel free to download or view this information.

Anyway, I think I have rambled enough, so if anyone has any questions or comments, please let me know.

VTY
-Mark

In additon, despite Mabberley recombining these genra, I have read articles forward of his article which still refer to the individual genra and have not used the recombined genra model.

VTY
-Mark