''Peritoma'' was a genus in the

plant family Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of ...

Cleomaceae with six species of shrubs and annuals, but is now considered synonymous with ''

Cleomella ''Cleomella'' is a small genus of about ten species of flowering plants. Like their relatives, the cleomes, plants of this genus have traditionally been included in the caper family Capparaceae but have recently been moved into a new family, Cleo ...

''. All six species are native to

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

, concentrated mostly in southern California, and with large populations in the rest of the western United States and northwestern Mexico. The name "''Peritoma''" is derived from the Ancient Greek words "peri" (''περί''), meaning "about" or "around," and "toma" or "tome" (''τομή''), meaning "cut." The name "cut-around" refers to the

calyx Calyx or calyce (plural "calyces"), from the Latin ''calix'' which itself comes from the Ancient Greek ''κάλυξ'' (''kálux'') meaning "husk" or "pod", may refer to: Biology * Calyx (anatomy), collective name for several cup-like structures ...

that splits around its middle as the fruit

dehisces Dehiscence is the splitting of a mature plant structure along a built-in line of weakness to release its contents. This is common among fruits, anthers and sporangia. Sometimes this involves the complete detachment of a part; structures that op ...

H20120909-5531—Peritoma arborea—RPBG (9830401275)

Species

* ''

Peritoma arborea ''Cleomella arborea'' syn. ''Peritoma arborea'' (formerly '' Isomeris arborea'', syn. '' Cleome isomeris''), is a perennial shrub or bush in the spiderflower family (Cleomaceae) known by the common names bladderpod, bladderpod spiderflower and bu ...

'' ** ''Peritoma arborea var. angustata'' ** ''Peritoma arborea var. arborea'' ** ''Peritoma arborea var. globosa'' * '' Peritoma jonesii'' * ''

Peritoma lutea ''Peritoma'' was a genus in the plant family Cleomaceae with six species of shrubs and annuals, but is now considered synonymous with ''Cleomella''. All six species are native to North America, concentrated mostly in southern California, and ...

'' * ''

Peritoma platycarpa ''Peritoma'' was a genus in the plant family Cleomaceae with six species of shrubs and annuals, but is now considered synonymous with ''Cleomella''. All six species are native to North America, concentrated mostly in southern California, and ...

'' * '' Peritoma serrulata''

References

Cleomaceae Brassicales genera {{Brassicales-stub