156 Rydberg : Rocky Mountain flora 



coriaceous, white-strigose below, sparingly hirsute and punctate 

 above. Involucral bracts about twelve, in two series ; the inner series 

 longer and with scarious-margined reddish tips. Corolla flesh- 

 colored, with equal lobes. Stamens included. Style-lips broad. 

 Achenes clavate, densely villous. Pappus of eight nearly equal 

 scales, with prominent midrib and erose tips. 



Miss Eastwood, the discoverer of the plant, referred it to 

 Cha.nactis, to which it is not closely related, resembling this genus 

 only in the color of the corolla. The structure of the fruit and 

 pappus would place it nearer BaJiia and Tctraiicnris. In general 

 habit it resembles most that exceedingly rare plant described by 

 Nuttall under the name BolopJiyta alpiiia, wliich by Dr. Gray was 

 tranferred to PartJtcnimu. 



Chamaechaenactis scaposa (Eastw.) Rydb. 

 Chaoiactis scaposa Eastw. Zoe 2 : 231. 1891. 



Rydbergia Brandegei (A. Gray) Rydb. 

 Actinclla grandiflora glahrata Porter, in Port. & Coult. Syn. Fl. 



Colo. j^. 1874. 

 Actiiiflla Bra)idcgci Porter ; A. Gray, Proc. Am. Acad. 13 : IJ^. 



1878. 

 Rydbergia glabrata Q\-&t\\&,Y\\Xo\-\\2. 2>'- -/O- 1898. 



Hymenoxys macrantha (A. Nels.) Rydb. 

 Picradciiia macrantha A. Nels. Bot. Gaz. 28 : 130. 1899. 

 Hymenoxys Richardsonii macrantha Cockerell, Bull. Torrey Club 



31 : 475. 1904. 



P^vidently Professor Cockerell was correct in uniting Hymenoxys 

 and Picradenia under the older generic name. To his conception 

 of species I am not willing to assent, however. In this respect I 

 would rather agree with Dr. Greene and Prof Aven Nelson. The 

 changes in nomenclature of the Colorado species are here given. 



Hymenoxys pumila (Greene) Rydb. 

 /^/677?c/£7//c?' /'//////7c?' Greene, Pittonia 3 : 271. 1898. 

 Hymenoxys Ricliardsonii pitmila Cockerell, Bull. Torrey Club 31 : 

 472. 1904. 



