LlMXORCHIS AND PlPERIA NORTH OF MEXICO 611 



H. Cooperi Wats. /. c. is not a Linuiorchis, but a Piperia. 



//. gracilis Wats, is not the same as Platanthera gracilis Lind- 

 ley, but P. stricta of the same author. 



Kraenzlin's treatment in his Orcliidaccarum Genera et Species 

 is altogether unsatisfactory. He admits only two species, Platan- 

 thera gracilis and P. Jiyperborea, the latter with several varieties. 



His P. gracilis is, however, not P. gracilis Lindley but Habc- 

 naria gracilis Wats. (P. stricta Lindl.). 



Under P. Jiyperborea a var. genuina he cites naturally also 

 Habenaria borealis ft viridiflora Cham, as a synonym, but he has 

 printed viridis instead of viridiflora. I take this, however, as a 

 distinct species. 



P. convallariaefolia he has reduced to a variety, P. hyper bore a 

 p var. convallariaefolia. In the same manner, he calls H. dilatata, 

 T var. dilatata Lindl. (I do not think that Lindley ever made it a 

 variety ; Kraenzlin is very loose in citing authorities.) Under this 

 variety he has as synonyms among others : Platantkera Huronensis 

 Lindl., Habenaria pedicellata S. Wats., H. Cooperi S. Wats., P. 

 graminea and P. borealis Reichenb. Of these the last named is the 

 only one, that can be referred here with any reason, for that, which 

 is the same as Habenaria borealis Cham., belongs to the dilatata 

 group, while P. Huronensis belongs to the Jiyperborea group and H. 

 pedicellata and H. Cooperi belong to distinct genera. 



Under his d var. leucostachys he has as synonyms besides P t 

 leucostacliys Lindl., also Habenaria brevifolia Greene, P. Ghies- 

 brechtiana Rich. & Gal., P. sparsiflora^. Wats., P. Thnrbcriv. Gray/ 

 S. Wats, and H.flagellaris S. Wats. Of these Habenaria brevifolia 

 Greene and H. sparsiflora S. Wats, can under no conditions be 

 referred to //. hucostachys on account of their broad connective. 

 The habit of H. brevifolia alone should throw it out ; there is 

 scarcely a more distinct species in the whole family. As far as 

 H. sparsiflora S. Wats, is concerned, it would have been more rea- 

 sonable to refer that species to his H. gracilis, i e. f H stricta Lindl.; 

 the habit and lip in the two are the same and the flowers have some 

 resemblance. The main difference is in the spur and the connective. 

 It is also to be noticed that Watson never published any Platan- 

 thera sparsiflora but a Habenaria sparsiflora, nor any var. Grayi of 

 either Platanthera or Habenaria Thurbcri. In the citation of the 



