Author: Jan Scholten
Clades: Poales; Liliidae; Lilianae; Angiospermae; Plants.
Juncaceae is a Family in the order Poales. In the Apg classifications Polaes is member of the Commelinoids in the Liliidae subclass. In the Apg4 classification the families Thurniaceae are included in Juncaceae.
In the first version of Plant theory Commelinoids was placed in Phase 4.
In the second version of the Plant theory Commelinoids is split in the Orders Poales, Zingiberales, Commelinales and Arecales. Poales is placed in Phase 2. Juncaceae is placed in Sunphase 1 of Poales.
Juncaceae: Distichia, Juncus, Luzula, Marsippospermum, Oxychloe, Patosia, Rostkovia.
Thurniaceae: Prionium, Thurnia.
There are 2 major genera in Juncaceae: Juncus with 300 genera and Luzula with ± 140 species. They can be divided in subgenera:
1 sect. Juncus
2 sect. Graminei (Engelm.) Engelm.
3 sect. Caespitosi Cout.
4 sect. Stygiopsis Kuntze
5 sect. Ozophyllum Dumort.
6 sect. Iridifolii Snogerup & Kirschner
Juncus subg. Poiophylli Buchenau
1 sect. Tenageia Dumort.
2 sect. Steirochloa Griseb.
3 sect. Juncotypus Dumort.
4 sect. Forskalina Kuntze
1. subgenus Marlenia, early derived lineage within Luzula
2. subgenus Pterodes except for L. pilosa
3. sections Anthelaea and Nodulosae
4. sections Diprophyllatae and Thyrsanochlamydeae
5. section Alpinae
6. section Luzula