- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
The traditionally defined Arabis has been shown to be a highly artificial genus that was composed of four different taxa in New England— Arabidopsis, Arabis s.s., Boechera, and Turritis (Al-Shehbaz 2003). It is now known that the morphological characters used to delimit Arabis s.l. evolved independently many times within the family, and features such as base chromosome number more accurately depict the evolutionary history of this group of genera (though particulars of fruit and trichome morphology do show trends between the genera). Arabis alpina L. was attributed to ME by Magee and Ahles (1999) based on a specimen taken from a private residence— Gould 17523 ( NHA!). The label provided no evidence of naturalization, and this species is not accepted here as a part of the New England flora.
Show photos of: Each photo represents one species in this genus.