edg-e ; the fruit is oblong, 2-3 lines long, with very wide wings, 

 but the whole outline is oblong. All these species grovy on 

 gravelly or clay soil, mostly in the valleys at low elevations, 

 though A. longipes grows up to 9000 feet alt. in the mountains 

 on mesas, and they often grow in alkaline soil. A, Ibapensis 

 always so: the flowers are light yellow to white, often with 

 purple anthers. The relationship of this group is with their 

 i'hellopterus. The other group embraces A. Jonesii, purpu- 

 r(*um, Rosei. and C. basalticus. This group is intimately re- 

 lated to Pteryxia and shades into it. It is characterized by 

 .somewhat fleshy horizontal branching roots, variously tuber- 

 ous enlarged, foot not elongating to speak of, rather narrow 

 (for the length) and fibrous root sheaths, crowns several (but 

 not caespitose as in Pteryxia), stems evident, but the inter- 

 nodes shorter than the leaf sheaths; leaves coriaceous, not 

 fleshy, verv rigid and mostly acerose tipped, mostly much dis- 

 sected with minute or small final divisions, though in half the 

 species the dissection is much less and lobes larger. A. Rosei 

 and C. basalticus are transitions to Phellopterus ; fruit includ- 

 ing the wings almost as broad as long and deeply emarginate 

 at both ends, the wings being much wider than the body, about 

 4 lines long; in addition the flowers are deep yellow to black- 

 purple even in the same species; peduncles decumbent at base 

 mostly; leaves m.ostly twice as large as in the other group; ex- 

 ceptions are A. Rosei, which has vertical tuberous roots like 

 the other group, and the leaves of this and C. basalticus are 

 even smaller than that group and less divided; C. basalticus is 

 half wav between the groups; in the wings the variance is re- 

 markable. A. Panamintense has at times the cross section of 

 the wings at base, triangular, then above that it is filiform, then 

 enlarges again to as thick as the base, and then tapers quickly 

 to a knife edge at the outer edge just as in Cymopterus proper 

 •.n C. glomeratus, but the transition is more gradual. (See fig. 

 .■).3 C. & R.) A. purpureum has the cross section filiform subu- 

 late about as in fig. 52 C. & R. A. Jonesii has the base of the 

 cross section triangular to deltoid then abruptly filiform to the 

 edge. A. Rosei is about the same ; the habit of this group is 

 different; all grow in the juniper life zone in rocky soil on 

 well-drained ridges free from alkali, mostly among the juni- 

 pers. I would put this group as a section of Cymopterus and 

 call It Conophyllus, excluding C. Panamintensis and taking 

 C. purpureus as the type. 



