| Arabis | |
|---|---|
 | |
| Arabis ferdinandi-coburgii | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Arabis L. |
| Species | |
See text | |
| Synonyms[1] | |
| |
Arabis/ˈærəbɪs/,[2] orrockcress, is agenus offlowering plants, within the familyBrassicaceae.
The species areherbaceous,annual orperennial plants, growing to 10–80 cm tall, usually densely hairy, with simple entire to lobedleaves 1–6 cm long, and small white four-petaledflowers. Thefruit is a long, slendercapsule containing 10-20 or moreseeds. Natural habitat forArabis species is rocky mountain/cliff sides or dry sites.[3] Cultivation ofArabis is best suited for rock gardens or container gardens.[2] This genus is pollinated by members of Apieae and Lepidoptera.[3]
Though traditionally recognized as a large genus with manyOld World andNew World members, more recent evaluations of the relationships among these species using genetic data suggest there are two major groups within the old genusArabis. These two groups are not each other's closest relatives, so have been split into two separate genera. Most of the Old World members remain in the genusArabis, whereas most of the New World members have been moved into the genusBoechera, with only a few remaining inArabis.[4][5]
Some species, notablyArabis alpina, are cultivated asornamental plants ingardens. Many others are regarded asweeds.
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