Orbexilum

{{Automatic taxobox

| image = Orbexilum pedunculatum.jpg

| image_caption = Orbexilum pedunculatum

| taxon = Orbexilum

| authority = Raf. (1832)

| subdivision_ranks = Species

| subdivision = See text

| synonyms = Rhytidomene {{small|Rydb. (1919)}}

| synonyms_ref =

}}

Orbexilum, commonly called leather-root,{{PLANTS|id=ORBEX|taxon=Orbexilum|access-date=25 July 2015}} is a genus of flowering plants in the legume family (Fabaceae). They are native to North America, where they are found in the United States and Mexico, south to Chiapas.{{cite web |url=http://www.herbarium.unc.edu/flora.htm |title= Flora of the Southern and Mid-Atlantic States |author= Alan Weakley |date= 2015}}

This genus can be distinguished from other genera in the Psoraleeae by its "thick glabrous pod walls that are distinctively rugose and by [a] calyx that is scarcely accrescent."{{cite journal | author = Turner BL. | year = 2008 | title = Revision of the genus Orbexilum (Fabaceae: Psoraleeae) | journal = Lundellia | volume = 11 | pages = 1–7 | doi = 10.25224/1097-993X-1.11.1 | url = https://w3.biosci.utexas.edu/prc/pdfs/Turner1-Lundellia11.pdf}}

Taxonomy

The genus was described by Constantine Samuel Rafinesque in 1832, with the type species O. latifolia, moved from Psoralea.{{IPNI|id=30000373-2|taxon=Orbexilum|access-date=2021-06-14}} (O. latifolia is now considered a synonym of O. onobrychis.{{cite web |title=Orbexilum latifolia |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew|url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:510592-1 |access-date=11 September 2023}}) Rafinesque differentiated Orbexilum from Psoralea largely on the basis of features of the calyx.{{Citation |mode=cs1 |last1=Rafinesque |first1=C.S. |date=1832 |title=107. Twenty new genera of plants from the Oregon mountains, etc. |journal=Atlantic Journal, and Friend of Knowledge |volume=1 |issue=3 |pages=144–146 |url=https://www.biodiversitylibrary.org/page/33519655 |access-date=2021-06-14 }}

=Species=

Orbexilum comprises the following species:{{cite web |title=Orbexilum Raf. |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew|url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30000373-2 |access-date=2021-06-14 }}

Orbexilum chiapasanum B.L.Turner
Orbexilum lupinellus (Michx.) Isely
†Orbexilum macrophyllum (Rowlee) Rydb. – bigleaf scurfpea{{Cite web|last1=LeGrand|first1=H|last2=Sorrie|first2=B|date=2021|title=Account for Bigleaf Scurfpea|url=https://auth1.dpr.ncparks.gov/flora/species_account.php?id=1574|access-date=May 26, 2021|website=Vascular Plants of North Carolina|publisher=North Carolina Biodiversity Project and North Carolina State Parks}}
Orbexilum melanocarpum (Benth.) Rydb.
Orbexilum oliganthum (Brandegee) B.L.Turner
Orbexilum onobrychis (Nutt.) Rydb.
Orbexilum pedunculatum (Mill.) Rydb.
Orbexilum psoralioides (Walter) Vincent, syn. Orbexilum gracile (Torr. & A.Gray) B.L.Turner
Orbexilum simplex (Nutt. ex Torr. & A.Gray) Rydb.
†Orbexilum stipulatum (Torr. & A.Gray) Rydb.
Orbexilum virgatum (Nutt.) Rydb.

Notes

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{{#tag:ref|The specific epithet is sometimes incorrectly spelled lupinellum, but is a noun in apposition, so is correctly spelled lupinellus.|group=note|name=note1}}

}}

References

{{Reflist|refs=

{{IPNI|id=281687-2|taxon=Orbexilum lupinellus|access-date=2021-06-14}}

}}

External links

[http://plants.usda.gov/java/profile?symbol=ORBEX USDA Plants Profile]
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Category:Fabaceae genera

Category:Flora of Northern America