Xyridaceae | |
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Xyris complanata flower close-up | |
Scientific classification![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Poales |
Family: | Xyridaceae C.Agardh[1] |
Genera | |
Synonyms | |
Xyrideae |
TheXyridaceae are afamily offlowering plants. This family has been recognized by many taxonomists and is known as the yellow-eyed grass family.
TheAPG II system, of 2003 (unchanged from theAPG system of 1998), also recognizes this family, and assigns it to the orderPoales in the cladecommelinids, in themonocots. This treatment in APG II represents a slight change from the APG system of 1998, which had recognized the familyAbolbodaceae for some of the plants included here; that family was unplaced as to order, but was assigned to this same clade (although APG used the spelling "commelinoids").
The family contains almost 400 species in five genera,[2] but most of the species are found in the genusXyris (see alsoAbolboda). The species are mostly tropical and subtropical.
TheCronquist system of 1981 also recognized such a family and placed it in the orderCommelinales in the subclassCommelinidae in classLiliopsida in divisionMagnoliophyta.
TheWettstein system, last updated in 1935, placed the family in orderEnantioblastae.
Xyris torta, twisted yellow-eyed grass, is onMinnesota'sendangered species list.
In 2021 it was discovered thatFusarium xyrophilum was able to hijack a South American species of yellow-eyed Xyris grass, creating fake flowers, fooling bees and other pollinating insects into visiting them, taking fungal spores to other plants.[3]