Engelm.
Identity
Unique IDELEMENT_GLOBAL.2.142151
Element CodePDEUP0D0Z0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderEuphorbiales
FamilyEuphorbiaceae
GenusEuphorbia
SynonymsChamaesyce glyptosperma(Engelm.) Small
Other Common NamesEuphorbe côtelée (FR) Rib-Seed Sandmat (EN) ribseed sandmat (EN) Ridge-seed Spurge (EN)
Concept ReferenceKartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Taxonomic CommentsThe Flora of North America (vol. 12 2016) transfers Chamaesyce glyptosperma to Euphorbia glyptosperma; these represent the same concept for the element.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-09-19
Change Date1988-08-04
Edition Date2024-09-19
Edition AuthorsN. Ventrella (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsEuphorbia glyptosperma is an annual forb found on stream and riverbanks, prairies, meadows, open disturbed sites, and roadsides of much of southwestern Canada and the western and central United States as a native species, and as a weedy adventive or introduced species in eastern Canada and elsewhere. There are over 1,000 occurrences of this species, which are likely threatened by development, rights-of-way maintenance, succession, invasive species, recreation, and other threats in some places. Little is known about threats or trends, but with a large range extent, a high number of occurrences, abundant habitat, broad habitat preferences, and no obvious intrinsic vulnerabilities, Euphorbia glyptosperma is considered secure.
Range Extent CommentsEuphorbia glyptosperma is widespread, occurring throughout much of southwestern Canada and the western and central United States as a native species, and as a weedy adventive species in eastern Canada and elsewhere (FNA 2016, POWO 2024). Range extent was estimated to be over 32 million square kilometers using herbarium specimens and photo-based observations documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium records and photo-based observations documented between 1993 and 2024, there are estimated to be over 1,000 occurrences rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).
Threat Impact CommentsAlthough threats are not widely documented, Euphorbia glyptosperma is potentially threatened by development, rights-of-way maintenance, invasive species, and other threats in some places. However, their overall impact is likely negligible given the species' broad range, large number of occurrences, tolerance of light disturbance, and affinity for typically abundant habitats, as well as no obvious intrinsic vulnerabilities.