15 



Poa glauca var. crocata (Mx.). 

 P. crocata Mx. Fi i 6* 



Foa Bolanderi var. Kelloggii (Vasey). 



P. Kelloggii Vasey Gr. Pac. 3 1\: 



Foa Bolanderi var. Howellii (V. & S.). 



P. Howellii V. & S. Gr. Pac. 2 T8. 



Poa oceidentalis Vasey is the same as P. platyphylla Rydberg. 



Poa leptocoma var. reflexa (V. & S.). 



P. reflexa V. & S. Cont. Nat Herb 1 27(5. 



Poa laxa Haenke is P. alpicola Nash. The eastern plant which 



may be called var. debiliorn. var, is laxer, with pale spikelets, and 

 acuminate leaves, our western plants are the same as the Europe- 

 an ones. 



Poa pratensis var. pseudopratensis (Scr. & Rydb.). 



P. pseudopratensis Scr.& Rydb. Cont. Nat. Herb. 3*539. 



Eatonia. The writer objects to the relegation of this genu* 

 to synonymy. On the showing of Scribner in Rhodora fi 13? ff. 

 there is no reason at all for the creation of Sphenopholis by Scrib- 

 ner. The Eatonia of Rafinesque was apparently a Panicum and 

 therefore a synonym. At any rate no specimens of it are extant 

 and it should be treated as a iiomen nudum. This leaves us the 

 Eatonia i»f Endlicher, which is clearly defined and has been ac- 

 cepted as a genus for eighty years and as the proper name for the 



species. The "once a synonym always a synonym" dictum is the 

 the only basis on which it rests and this foolish idea never had any 

 conservative support. The writer holds that the merging of cer- 

 tain species of Trisetum with it is not sound, for it confuses both 

 genera. Trisetum is well characterized by the split lemma with the 

 two acuminate teeth hyaline, and the midrib produced either in 

 the notch or below it into a conspicuous awn. hi the normal Tri- 

 seta the upper glume is wider below, but in the Eatonioid species 

 T. Hallii, interrupta, palustris and filiformis (Eatonia Pennsyl- 

 vania var. filiformis Chapman Fl. S. States 560) the upper glume 

 is larger above, and in the last species the hyaline teeth are small. 

 Eatonia is well characterized by the entire lemma truncate or roun- 

 ded at tip and awnless, and by the upper glume always larger a- 

 bove The spcies are two, or at the most three: E. obtusata, nitida 



and pallens. 



Panicularia. This genus was founded by Fabricius Enum. 

 PI. Hort. Helm. 373 1763 and hat* been taken up by the Britto- 

 nians to replace the Glyceria of Robert Brown. One of the funda- 

 mental points insisted on by them (which I believe is sound and 

 which the botanical world has accepted tacitly in practice for over 



