Ephedra antisyphilitica
Sanderson Co., TX
Spjut & Marin15146, Nov 2002

Ephedra californica
Vizcaíno Desert, BCN
Photo on right shows branch with three persistent recurved leaves.
 

Ephedra californica
North of Yucca Valley, CA, Joshua Tree wd.
Nov 2007
 

Ephedra aspera, as keyed in Jepson Man. 2nd ed.
online and in Munz (Ephedra fasciculata)
AZ: Just E of Bullhead City
Sep 2007

Ephedra aspera, as keyed in Jepson Man. 2nd ed.
online and in Munz  (E fasciculata)
North of Yucca Valley, CA, Joshua Tree wd.
Nov 2007.  Plants generally with flexuous branches.

Ephedra nevadensis
Walker Lake, NV
Sep 2006. Plants generally intricately and shortly branched, stems grayish-green to glaucous.

Ephedra nevadensis
5 mi N of Walker Lake, NV
June 2007

Ephedra nevadensis
Mesquite Mts., Mojave Desert, CA
Apr 2005

Ephedra nevadensis
E Sierra Nevada near Bishop, CA
May 2008.  Long peduncled cones in left image.

Ephedra torreyana
Valley of the Gods, Utah
May 2008

Ephedra trifurca
New Mexico: Left Hidalgo Co., near Hachita, right, Dona Ana Co.; Oct 2007

Ephedra viridis
Mesquite Mts., Mojave Desert, CA
Apr 2005. Plants generally with erect yellowish green branches and dark brown leaf collars.

Ephedra viridis
CA: E Sierra Nevada, Inyo Co.,
SW of Bishop, Coyote Valley, Oct 2006

Ephedra viridis
S Sierra Nevada, Kern Co.,
Piute Mt., CA. Apr 2005