652 CALIFORNIA ACADEMY OF SCIENCES. 



This grows in clayey and rather alkaHne soil in desert 

 places, and always seems to have white flowers; the pods 

 frequently have the papery surface split away ffom the 

 woody inner wall, especially at the sutures after the fash- 

 ion of A. cicadcB. 



Astragalus Zionis. 



No. 5261W. May 17, 1894, Springdale, Utah, 4000° 

 alt., in red sand. 



No. 5249h. May 16, same locality. 



No. 5224d. May 15, 1894, Rockville, Utah, in red 

 sand, 4000° alt. 



No. 5001b. March 30, 1894, Bellevue, Utah, in red 

 sand at 3600° alt. 



No. 5239. May 16, 1894, Springdale, Utah, 4000^ 

 alt., in red sand. 



No. 5249g. Same date and locality. 



This is a tufted perennial with the habit of A. amfhi- 

 oxys, but more slender, while the spreading, rather longer 

 pubescence of very delicate hairs is fixed by the base and 

 not by the middle as in that species; stipules very broad, 

 1—2" long, adnate to the petiole but free from each other, 

 hyaline below; stems densely tufted from a deep, peren- 

 nial, erect root, wholly herbaceous, with nodes 3' long or 

 less, ascending; leaves 5-12' long, with petiole about ^ 

 the length and slender; leaflets about 10 pairs, ovate to 

 lanceolate, 6" long, very acute, not contiguous; peduncles 

 about as long as the leaves, and the rachis ^ as long as 

 the peduncle; pods ascending, arcuate, abruptly long- 

 acute, with flat subulate style, linear-oblong, 2" wide and 

 about 1%^ long, a trifle sulcate and rather triangular in 

 cross -section, at least when dry, but when fresh much 

 rounded, ventral suture not raised but pod much flattened 

 on each side of it, narrow below, sessile, with a complete 

 joint at base, short-shaggy, mottled, pubescence very 



