part 1] 



ARCTIC FLORA OF THE CAM VALLET. 



19 



Species recorded. 



Potentilla Tormentilla Neck. 



JRuhus sp 



Dri/as octopetala \a 



Mi/riopliylhim spicattim L. .. 



Hippuris vidgaris L 



Saxifraga oppositifolia L. .. 



Scabiosa sp 



Campanula sp. ... 



Vaccinium idiginosum L 



Gentiana cruciata L, 



Menyanthes trifoliata L. 



Bartsia sp 



Ajuga reptans L 



.Primula scotica Hook. 



Frimida sp 



Armeria arctica Wallr, 



jRumex maritimus L 



Polygonum viviparitm L. 



Salix cinerea L 



Salix repens \j 



Salix Arbuscula Fries 



Seams. 



Sa lix Lapponum L 



Salix herbacea L , 



Salix Polaris Walil. (?) 



Salix reticulata L 



Betula nana L 



Carpinus Betulus L 



Sparganium simplex Hudson 



Sparganium minimtim Pries 



Potamogeton J/eterophyllus Scbreb 



Potamogeton Zizii Roth 



Potamogeton obtusifolius M. & K 



Potamogeton Jili for mis Nolte 



Potamogeton densus L 



Potamogeton sj^p 



ZannicJiellia pecltmculata Reiclib. 



X 



X 



X 



X 



>i X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



Comment on Specimens. 



Badly preserved. 



Not in the Reid Collection. 



Not in the Reid Collection. 



Leaves. The lower epidermis was 

 destroyed, showing the spongy 

 tissue and often the upper epi- 

 dermis also. Leaves of the recent 

 plant were prepared for com- 

 parison hy soaking and rubbing. 



Surface-striatious were closer than 

 those in the majority of recent 

 seeds examined, but fell within 

 the range of variation of the 

 species. In allied species also 

 a similar range of variation was 

 observed. 



The outer surface of the seeds 

 was often partly destroyed. 



Not in the Reid Collection. 



A few undeveloped specimens 



showed crowded pollen-grains in 



the calyx. 



The specimens were usually 

 broken, though all showed the 

 distinctive ornamentation. The 

 original determination was based 

 on a good and complete speci- 

 men. 



In many cases the hairs on the 

 leaves were well preserved. 



Several species. • Not represented 

 in the Reid Collection. 



c2 



