Rydberg : Rocky Mountain flora 333 



Picradeniopsis Woodhousii (A. Gray) Rydb. comb. nov. 



Acliyropappus Woodhousii A. Gray. Proc. Am. Acad. 6 : 546. 1865. 

 Schkuhria Woodhousii A. Gray, Proc. Am. Acad. 9: 199. 1874. 

 Bahia Woodhousii A. Gray, Syn. Fl. I 2 : 333. 1884. 



Dr. Gray in the work last cited includes this species in the annual 

 species of Bahia. The plant is, however, perennial with a creeping 

 rootstock, and in habit so closely resembling P. oppositifolia that 

 it is often hard to distinguish the two. The flowers are of a much 

 lighter color in P. Woodhousii, the rays being ochroleucous or 

 straw-colored, and the pappus-scales are much narrower, lance- 

 subulate, and only slightly scarious-margined. 



This should have been included in the New Manual, as the 

 type was collected in northern New Mexico. 



Platyschkuhria 



Platyschkuhria oblongifolia (A. Gray) Rydb. should have been 

 included in Coulter & Nelson's New Manual. It has been col- 

 lected in southwestern Colorado. See Gray's Synoptical Flora 

 l 2 : 332, and my Flora of Colorado 377. 



Platyschkuhria desertorum (Jones) Rydb. comb. nov. 



Bahia desertorum M. E. Jones, Zoe 2: 249. 1891. 



This species is a close ally to P. integrifolia, differing mainly 

 in the acuminate bracts. 



Villanova 



By an oversight Bahia dissecta (A. Gray) Britton (B. chrysan- 

 themoides A. Gray) was retained in Bahia in my Flora of Colorado. 

 It should have been restored to Villanova. As nobody seems to 

 have used this generic name in connection with the earliest specific 

 one, the plant should be known as: 



Villanova dissecta (A. Gray) Rydb. comb. nov. 



Amauria ? dissecta A. Gray, Mem. Am. Acad. 4: 104. 1849. 



Villanova chrysanthemoides A. Gray, PI. Wright 2: 96. 1853. 



Bahia chrysanthemoides A. Gray, Proc. Am. Acad. 19: 28. 1883. 



Bahia dissecta Britton, Trans. N. Y. Acad. Sci. 8: 68. 1889. 



