52¢ Canadian Arctic Expedition, 1913-18 
Empetrum nigrum 
Epilobium latifolium 
Pyrola grandiflora 
x Pyrola rotundifolia 
Ledum palustre 
x Ledum palustre var. decumbens 
Rhododendron lapponicum 
Lotseleuria procumbens 
Kalmia polifolia 
Casstope tetragona 
x Andromeda polifolia 
Arctostaphylos alpina 
Vaccinium uliginosum f£. microphylla 
Primula stricta 
x Primula farinosa 
x Armeria vulgaris 
Statice Armeria f. sibtrica 
Pleurogyne rotata 
AMertensia maritima 
Castilleja pallida 
Pedicularis lapponica 
Pedicularis hirsuta 
Pedicularis sudetica 
Pedicularis arctica 
x Pedicularis lanata 
Pedicularis capitata 
Pinguicula vulgaris 
Campanula uniflora 
x Aster sibiricus 
Erigeron uniflorus 
Erigeron alpinus 
Achillea borealis 
x Matricaria inodora 
Matricaria inodora var. grandiflora 
Chrysanthemum integrifolium 
Artemisia vulgaris var. Tilesvi 
Petasites frigida 
Arnica alpina 
x Arnica montana var. angustifolia 
Senecio frigidus 
Senecio frigidus f. Shradert 
x Senecio palustris 
Senecio palustris var. congestus 
Senecio lugens 
Saussurea angustifolia 
x Taraxacum officinale 
Taraxacum ceratophorum 
Crepis nana 
According to O’Neill and Cox the dwarf birch, Betula glandulosa, is common 
both along Tree river and in Bathurst inlet; at the former place it attains a 
height of 3 feet. Willows (probably Salix Richardsonii) attain their maximum 
height, 10 feet, on Tree and Hood rivers. 
Of the flowering plants listed above, Hanbury’s were collected at the end 
of June and beginning of July, and Anderson’s in the middle of June. The 
collections made by the Southern Party of the Canadian Arctic expedition 
were made from the middle of June to the middle of July at Tree river, and in 
