726 CALIFORNIA ACADEMY OF SCIENCES. 



margin folded around the stamen, lanceolate, acuminate, 

 bidentate, equaling the flowering glume, joints of the 

 rachis of spikelet about 2" apart. This remarkable plant 

 has most of the technical characters of Hystrix, but is 

 manifestly allied to Elynms condensatus, and may prove 

 to be only a form of it. 



No. 5447. Top of Sahna Pass, Utah, 8200° alt., in 

 clay, in rather alkaline soil. 



Ephedra Nevadensis var. viridis (Coville, Death 

 Valley Rep., 220). 



Ephedra viridis Coville, 1. c. 



No. 5213d. May 12, ten miles below Kanarra, 4500° 

 alt., on rocks. 



No. 559oe. Head of Soldier Canon, 6700° alt., in 

 clay, July 5. 



No. 5001k. At foot of grade above Bellevue, Utah, 

 3700° alt., among rocks, March 30. 



No. 5i63at. Silver Reef, Utah, in gravel, 4500° alt.. 

 May 4. 



No. 5124. Diamond Valley, Utah, 4500° alt., on rocks, 

 April 28. 



No. 5iioao. April 26, St. George, Utah, 3000° alt., 

 in red sand. 



No. 5338ah. Marysvale, Utah, 6000° alt., in gravel. 

 May 31. 



No. 5297V. Pahria Canon, Utah, 5300° alt., in red 

 sand. May 26. 



No. 5289y. Johnson, Utah, 5000° alt., in red sand, 

 May 23. 



No. 5476V. June 21, Grand Junction, Col., 4500° alt., 

 in gravel. 



No. 5663bf. Marvine Laccohte, Utah, 6000° alt., in 

 gravel, July 23. 



This plant, which I have collected in various places in 



