Cymopterus lapidosus var. deserti n. var. 



This has the roots thick and often much enlarged and 

 short,, fleshy and rather g-Jaucous leaves with very broad and 

 tlai petioles and rachis, the petioles rarely an inch long, blade 

 1 road and compact, most of the peduncles much shorter than 

 the leaves, fruit with wings barely a third the width of the 

 body, 3 lines long and 1>< lines wide, elliptical, most of them 

 aborting, dorsal wings mostly aborted. This is the plant re- 

 ferred to by Coulter & Rose from Granger and this is the type 

 of the variety. I also have it from Carter on the same date, 

 and Nelson sends it under the name of C. Ibapensis No. 4575 

 from the same region at Piedmont. The habitat of this va- 

 riety is very different from that of the type species, being clay 

 flats like C. Ibapensis. Comparing this with the latter, I find 

 the same tendency to the abortion of the dorsal ribs in Iba- 

 pensi, but never so marked. This clears the genus from one 



Cymopterus Humboldtensis n. sp. 



This belongs to the Pseudocymopterus section. Alpine, 

 with the general habit and appearance of C. alpinus ; leaves 

 bright green, not at all glaucous, about 2 inches long, ternate, 

 the divisions long-stalked and then pinnate below w^ith the 

 r-innae incised nearly to the midrib, the ultimate divisions be- 

 ing obovate, triangular acute and about ^ line long and 

 smooth but rigid and acicular tipped as in the group, leaves 

 flat on the ground, petioles variable not as long as the sheath 

 and channeled ; peduncles slender, ascending, 3-5 inches long, 

 bearing a capitate umbel with 3-5 rays a line or two long or 



three times as long as the pedicels, that is about 3 lines long, 

 weak, hyaline margined, distinct; pedicels about a line long, 

 stout, angled and erect; fruit including the wings broadly 

 oblong or oval, 3 lines long, the body 1 line wide, wings J^ 

 line wide, the commissure flat when there are two seeds and 

 with 10 thread-like oil tubes, the face convex and with two 

 prominent ridges where the two or three dorsal wings arise, 

 making the intervals channels, oil tubes about 5 in the inter- 

 vals and very fine; wings corky, widest in the middle, the dor- 

 sal ones nearly as wide as the lateral, cross section broadly 

 linear to the middle and then subulate to the edge, fruit with 

 wings a little emarginate at both ends, straight. This is a 

 delicate little alpine plant wi'.h deep and t^perinr; root cro-.vnel 



