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iNat·135481SpeciesPlantae1,522 field observations
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  3. ›gnetophytes
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  6. ›Ephedra
Clapweed
Plate 1 of 4. (c) Rich Kostecke, some rights reserved (CC BY-NC), uploaded by Rich Kostecke · via iNaturalist

Clapweed

Ephedra antisyphilitica

Ephedra antisyphilitica is a plant species native to the southern Great Plains of the United States (Oklahoma, New Mexico, Texas), and also to northeastern Mexico (Nuevo León, Coahuila, San Luis Potosí).

This species should not be confused with the 1871 name Ephedra antisyphilitica S.Wats., native to further west in the Southwestern US and in Baja California. Meyer's use of the name dates from 1846, so it has priority over Watson's later application of the same name to a different plant. Watson's plant is now called Ephedra nevadensis.

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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In the stacks

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Every page naming Ephedra antisyphilitica in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 135481.