5/2 PHYSICAL GEOGRAPHY. 



*Euphrasia officinalis [Eu.] C. capitata [Eu.] 



Diapensia Lapponica [Eu.] C. rigida ; var. Bigelovii [Eu.] 



*Polygonum viviparum [Eu.] C. atrata [Eu.] 



Oxyria digyna [Eu.] *c. capillaris [Eu.] 



*Empetrum nigrum [Eu.] Phleum alpinum [Eu.] 



Betula glandulosar=B. nana probably of Agrostis scabra ; var. alpina. 



Salix chlorophylla. [Eu.] Calamagrostis Pickeringil. 



S. Cutleri. C. Langsdorffii. 



S. argyrocarpa. Poa laxa [Eu.] 



S. herbacea [Eu.] Festuca ovina; var. vivipara [Eu.] 



Luzula arcuata [Eu.] Triticum violaceum [Eu.] 



L. spicata [Eu.] Aira atropurpurea [Eu.] 



Juncus trifidus [Eu.] Hierochloa alpina [Eu.] 



*Scirpus ccespitosus [Eu.] Lycopodium selago [Eu.] 



*Carex scirpoidea [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. Houstonia caerulea. 



Thalictrum dioicum. Aster Radula. 



Viola canina. A. acuminatus. 



Stellaria borealis. A. nemoralis. 



Paronychia argyrocoma. Solidago thyrsoidea ; var. alpina. 



Rubus Chamaemorus. Taraxacum Dens-leonis. 



Potentilla tridentata. Antennaria margaritacea. 



Spiraea salicifolia. Campanula rotundifolia. 



Ribes prostratum. Vaccinium Oxycoccus. 



Heracleum lanatum. V. Vitis-Idaea. 



Cornus Canadensis. V. Pennsylvanicum. 



Linnaea borealis. Chiogenes hispidula. 



Lonicera caerulea. Kalmia glauca. 



Viburnum pauciflorum. Ledum latifolium. 



