Index / Search / Ephedra antisyphilitica
§1 Plant
Ephedra antisyphilitica Berl. ex C.A. Mey.
vernacular clapweed — species · Ephedraceae
§2Habit & range
Habit and range
- Growth habit
- Shrub
- Duration
- Perennial
- Group
- Gymnosperm
- Family
- Ephedraceae Dumort.
- Genus
- Ephedra
§2a
Native status, by region
- L48 Lower 48 States Native
§2b
County-level range
· 79 counties across 2 states/territories§3Cultivation
No cultivation specs.
USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.
§4Counties, by state
Recorded in 79 counties across 2 states/territories.
Oklahoma view state ↗ 5 N ▾
Texas view state ↗ 74 N ▾
- Andrews 48003
- Archer 48009
- Armstrong 48011
- Bee 48025
- Bexar 48029
- Brewster 48043
- Briscoe 48045
- Brooks 48047
- Brown 48049
- Callahan 48059
- Childress 48075
- Coleman 48083
- Comal 48091
- Concho 48095
- Cottle 48101
- Crockett 48105
- Culberson 48109
- Dickens 48125
- Dimmit 48127
- Frio 48163
- Garza 48169
- Hardeman 48197
- Hays 48209
- Hidalgo 48215
- Howard 48227
- Jackson 48239
- Jeff Davis 48243
- Jim Hogg 48247
- Jim Wells 48249
- Jones 48253
- Karnes 48255
- Kenedy 48261
- Kent 48263
- Kimble 48267
- King 48269
- Kinney 48271
- Kleberg 48273
- Knox 48275
- Live Oak 48297
- Lubbock 48303
- Martin 48317
- Mason 48319
- Maverick 48323
- McCulloch 48307
- McMullen 48311
- Medina 48325
- Menard 48327
- Midland 48329
- Motley 48345
- Nolan 48353
- Nueces 48355
- Palo Pinto 48363
- Parker 48367
- Pecos 48371
- Randall 48381
- Reagan 48383
- San Patricio 48409
- San Saba 48411
- Schleicher 48413
- Scurry 48415
- Shackelford 48417
- Starr 48427
- Sterling 48431
- Stonewall 48433
- Sutton 48435
- Taylor 48441
- Terrell 48443
- Tom Green 48451
- Travis 48453
- Val Verde 48465
- Webb 48479
- Winkler 48495
- Young 48503
- Zapata 48505
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/EPAN ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2653244 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T11:35:19Z