Rydberg : Rocky Mountain flora 155 



Platyschkuhria integrifolia (A. Gray) Rydb. 

 Schkiiria integrifolia A. Gray, Am. Nat. 8: 213. 1874. 

 BaJiia midicaulis A. Gray, Proc. Am. Acad. 19 : 27. 1883. 



Platyschkuhria oblongifolia (A. Gray) Rydb. 

 BaJlia oblongifolia A. Gra}', Proc. Am. Acad. 19: 27. 1883. 



Tetraneuris glabriuscula Rydb. 

 Tctranenvis glabra Greene, Pittonia 3 : 268, in part. 1898. Not 



Actinclla glabra Nutt. 1 84 1 . 



What Actinclla glabra Nutt. wa.s is not exactly known. It is 

 not, however, the plant for which Dr. Greene adopted the name 

 Tetraneuris glabra. If it is a Titraucuris at all, it must be a spe- 

 cies related to T. Tcesiana, T. argcntca and T. Icptoclada, as it is 

 described as having stem-leaves. None of these grows near the 

 original locality of A. glabra, viz., Shawnee villages on the Missouri 

 (near Kansas City). The only species that are found within 300 

 miles from this station are T. hcrbacca Greene of Illinois, and T. 

 fastigiata Greene and the following from central and western Kan- 

 sas. None of these answers the description. 



Tetraneuris stenophylla Rydb. 



Perennial with a branched caudex, the branches of which are 

 partly subterranean, 2-10 cm. long; leaves basal, very narrowly 

 linear-oblanceolate, 2—4 cm. long, 1—2 mm. wide, strongly punc- 

 tate, glabrous or with a few long hairs near the base ; bases dilated 

 and scarious-margined, only slightly long-hairy ; scape 5-10 cm. 

 long, striate, punctate and sparingly strigose ; involucre about 5 

 mm. high and 10 mm. wide, hemispheric ; bracts elliptic, obtuse ; 

 rays hght-yellow, about 10 mm. long and 5 mm. wide, 3-4-toothed 

 and 5-7-nerved. 



This is closest related to T. fastigiata Greene, in which, how- 

 ever, the bases of the leaves are arachnoid-hairy and the involu- 

 cres densely villous. 



Kansas: Ford County, 1891, L. D. Ellis (type). 



Colorado: Banks of Cimarron, x'^^^o, Newberry. 



CHAMAECHAENACTIS Rydb. gen. nov. 



Cespitose scapiferous perennial, branching below the surface 

 of the ground and with a woody root. Leaves all basal and simple, 



