1 



Nelson: New Plants from Wyoming 249 



It is also to be compared to E. condcnsafiis (Eaton) Greene, 

 under which name some specimens were recently distributed, no. 

 3088, Point of Rocks, June i, 1897. T^^'^it is, however, a plant of 

 a more southwestern ranije and seems to be a smaller plant, with 

 shorter leaves, more coarsely hirsute, light colored rays and a very 

 different pappus. 



E. Wyoniingcnsis I have seen so far from this state only. It 

 occurs rather sparingly in the south-central portion of the state, on 

 dry gravelly hillsides. Collected in 1898 also.. Type in Herb. 

 University of Wyoming, no. 3088. 



WYOMINGIA 



Perennials with woody, more or less branched roots and short, 

 woody, caespitose, multicipital caudices whose branche.s are 

 roughened or sheathed by the bases of the leaves of the previous 

 years : stems simple, monocephalous, one or more from each crown, 

 becoming naked and pedunculate above : leaves crowded on the 

 crowns and on the bases of the stems : heads large, involucral 

 bracts in 3-4 successixely shorter rows, rigid with a thickened 

 midrib : flowers Aster-like, rays broad, comparatively few, disk- 

 flowers numerous : style appendages short, triangular-cuspidate : 

 achencs short, densely pubescent, subtcrete. 



Wyomingia pulcherrima (Heller) 



Erigcron pidchcrnmus Heller, Bull. Torn Bot. Club. i<: 200 



Mr. Heller's plant as the first published of the species upon 

 which the genus now proposed as new is founded, may stand first. 

 His species and the one collected by the writer (described below) 

 are, so far as known at present, the only members of the genus. 

 It may turn out, however, that with these are to be associated one 



Mc 



Rydb. 



The generic description is drawn in particular from the follow- 



ilg species, though an examination of M 



no doubt whatever that the two are closely congeneric. To place 

 these plants in the already diverse genus Erigcron would be very 

 unsatisfactory as the characters show. 



The root and caudcx systems are those of XylorrJiiza and the 

 broad rays also suggest that genus. Wyoiniugia is further to be dis- 



