33 



between L argetitens and laxiflorus, the normal argent^us ciK x is 



truncate at base, but plenty of forms ocur with both truncate 

 and spurred calyx on the same plant. The leaves are normally 

 thick and less inclined to ripen, while in laxiflorus thev are thin- 

 ner and often flat. 



Lupinus laxiflorus var. tenellus (Dougl.) T, & G. is a well 

 defined form with small flowers and flat leaves les^ pubescent. 



Lupinus laxiflorus var. arbustus (Dougl. in Hot. Reg. 1230 a* 

 species) is the common Columbia Basin form with large leaves. 



Lupinus laxiflorus var. thiochrous Piper is a large- flowered 

 yellow variety of calcaratus Kell. and is probably rightly referred 

 to laxiflorus. This extends from Ketchum Idaho (Mrs. Br od head) 

 to Mt. Ibapah western Utah (Jones) and through Nevada westward 

 (Wells, etc. Jon</s). 



Lupinus laxiflorus var. argophyllus (Watson Proc. Am. Acad. 

 8 532 as argenteus var ) Tnis has the leaves of aiveuteus and the 

 calyx of laxiflorus, and runs into all sorts of forms as to pubes- 

 cence from smooth to densely velvety with yellow pubescence, and 

 as is usual with nearly all the lupines the flowers vary from 8-11 

 mm, long. This includes L. arg* minus Rydberg from my herba- 

 rium, pseudoparviflorus Rydberg, puleherrimus Rydberg. Forms 

 of argenteus are adscendens and laxus Rydberg and alprstris Xel- 

 son. L. comatus Rydberg is L. seric»*us. 



Drudeophytum Clementis n. sp. 



This species is a close ally to D. vestita and sr^ms nearest to Vo- 

 distera. I have named it Pycnothryx Clementis provisionally but 

 put it here for the present till the status of D. liar we^i is fixed 

 which is the type of the genus. Acaulescent perennial from a tu- 

 berous and deep root, with a single rather stout peduncle 4-? cm. 

 long and erect to decumbent and bructless.- Leaf single, radical, 

 on a stout marginless rather fleshy and angled petiole 4-7 cm, long. 

 Blade ovate to deltoid, 1.5-4 cm, long and wide, tripinnate, thick 

 and leathery, the primary divisions short-stalked and the r st ses- 

 sile. Leaflets obovate, about 2 mm. long, entire, with white and 

 triangular cusp or prickle, and with narrow cartilaginous margins 

 and densely rough-hairy with very stiff short flat and tapering hairs 

 widely spreading. Flowers in a compact terminal head about 1.5 

 cm. wide. Involucre none or a narrow hyaline wing or sometimes 

 a wide and short hyaline bracr. Rays 5-10, very stout, about equal, 

 rarely 4 mm. long. Involucel a broad and fleshy palmate bract, 

 partly clasping, 4 mm. long, 3-5-lobed to the middle with sharp 

 triangular divisions mostly smooth. Flowers mostly sterile, 5 10, 

 and linear-cuneate and 3 mm. long, with conspicuous mooth and 



