572 



PHYSICAL GEOGRAPHY. 



Euphrasia officinalis [Eu.] 



Diapensia Lapponica [Eu.] 



*Polygonum viviparum [Eu.] 



Oxyria digyna [Eu.] 



*Empetrum nigrum [Eu.] 



Betula glandulosamB. nana probably of 



Salix chlorophylla. 

 S. Cutleri. 

 S. argyrocarpa. 

 S. herbacea [Eu.] 

 Luzula arcuata [Eu.] 

 L. spicata [Eu.] 

 Juncus trifidus [Eu.] 

 *Scirpus ccespitosus [Eu.] 

 *Carex scirpoidea [Eu.] 



[Eu.] 



C. capitata [Eu.] 



C. rigida; var. Bigelovii [Eu.] 



C. atrata [Eu.] 



*C. capillaris [Eu.] 



Phleum alpinum [Eu.] 



Agrostis scabra ; var. alpina. 



Calamagrostis Pickeringii. 



C. Langsdorffii. 



Poa laxa [Eu.] 



Festuca ovina ; var. vivipara [Eu.] 



Triticum violaceum [Eu.] 



Aira atropurpurea [Eu.] 



Hierochloa alpina [Eu.] 



Lycopodium selago [Eu.] 



L. annotinum ; var. pungens [Eu.] 



Canadian Plants Naturalized on Mt. Washington. 



The species marked with the letter M in the catalogue are only those 

 which are indigenous to the alpine and sub-alpine regions. Quite a 

 number of plants, chiefly those of the Canadian region, have spread 

 themselves upwards in favorable seasons, and are naturalized there to a 

 certain extent. We present a list of those that have been gathered upon 

 Mt. Washington, mostly in the sub-alpine district. They are also marked 

 with the letter M not italicised upon the catalogue. Future explorations 

 will add many to the list. 



Ranunculus abortivus. 

 Thalictrum dioicum. 

 Viola canina. 

 Stellaria borealis. 

 Paronychia argyrocoma. 

 Rubus Chamaemorus. 

 Potentilla tridentata. 

 Spiraea salicifolia. 

 Ribes prostratum. 

 Heracleum lanatum. 

 Cornus Canadensis. 

 Linnaea borealis. 

 Lonicera caerulea. 

 Viburnum pauciflorum. 



Houstonia caerulea. 



Aster Radula. 



A. acuminatus. 



A. nemoralis. 



Solidago thyrsoidea; var. alpina. 



Taraxacum Dens-leonis. 



Antennaria margaritacea. 



Campanula rotundifolia. 



Vaccinium Oxycoccus. 



V. Vitis-Idaea. 



V. Pennsylvanicum. 



Chiogenes hispidula. 



Kalmia glauca. 



Ledum latifolium. 



