VEGETATION OF THE NORTHERN SHORES. 165 



LAKE SUPERIOR. EUROPE. 



CONIFERJE. 



Abies alba MX. Abies excelsa DC. Forests of the 



" canadensis MX. Jura. 



" nigra Pair. 

 " balsamea Marsh,. " pectinata DC. Forests of the 



Jura 



Larix americana MX. Larix europea DC. High Jura. 



Thuja occidciitalis L. 



Juuiperus connmmis L. Juniperus communis L. -. 



virginiana Z. " Sabina L. ' 



Taxus canadensis Wttld. Taxus baccata L. ) 



The resemblance of the Coniferre of Lake Superior to those of the subal- 

 pine region is very striking, for though they are not of the same species, the 

 analogy of the forms is so great, that it requires the eye of a botanist to be satis- 

 fied positively that these forests are not composed of identical trees in the two 

 hemispheres. 



ALISMACEJE. 



Triglochin elatum Nutt. See also the second list. 



ORCH1DEJE. 



Microstylis ophioglossoides Nutt. Microstylis monophyllos Lindl. In the 



Sub- Alps. 

 Corallorhiza multinora Nutt. Corallorhiza innata R. Br. Pine forests 



" Macraei* Gray. in the Sub- Alps. Creux du Vent. 



Gyrnnadenia tridentata Lindl. Gymnadenia conopsea L. 



Platanthera psycodes Gr. Platanthera bifolia Rich. 



u orbiculata Lindl. 



" Hookeri Lindl. 



" dilatata L. 



obtusata Lindl. 

 Goodyera repens R. Br. Goodyera repens R. Br. 



pubescens R. Br. 



Listera cordata R. Br. Listera cordata R. Br. Sub- Alps. 



Cypripedium pubescens Wittd. Cypripediurn Calceolus L. 



" acaule Ait. 



* " COEALLORHIZA MA.CE.Ei (sp. nov.) : scapo multifloro ; floribus (pro genere maxi- 

 mis) brevissime pedicellatis ; petalis ovali-oblongis ; labello ovali integerrimo basi 

 utrinque auriculato-infleso, palato prominulo subbilamellato in plicam antice produc- 

 tam desinente ; calcare plane nullo ; columna subalato-triquetra ; capsula ovoidea. 

 In umbrosis humidis ad ' Caledonia Springs,' Canada Occidental! detexit beatus W. F. 

 Macrae, ann. 1843, exemp. fructif. Nuper in insula 'Mackinaw' floriferam legerunt 

 celeb. Agassiz et C. G. Loring, Jr. Radix ignota. Scapus pedalis. Flores purpuras- 

 centes : sepala et petala semiunciam longa !" A. Gray. 



