Arctic Plants: Morphology and Synonymy 



31 B 



FlGTJKE I. 



1. Ranunculus lapponicus L., specimen from Tree river, showing the apicalportion of the rhizome 

 (R.), -with two green leaves (L^L*) and a stolon (St.) developed-in the axil of JJ. One and 

 two-thirds natiu-al size. 2. Same species; apical portion of the rhizome (R.) ; S =the flower- 

 ing stem; other letters as above; enlarged. 3. Same species; part of the rhizome with three 

 green leaves (L'-L'); stolons are developed in the axils of 1J, 1?, and JJ; letters as above; 

 natural size. (Figm'es 2 and 3 are drawn from Swedish specimens.) 



R. Cymbalaria Ptirsh var. alpina Hook. 



Found with the flowers fully developed, and showing the same habit as 

 farther south, with long stolons above ground. The species is well equipped for 

 propagation and widening of its range of occurrence, even though the individuals 

 are very small and the flowers always single. 



R. pygmaeus Wahlenb. 



Numerous specimens were collected with flowers and young fruit; in spite 

 of the small size of the plant, the shoot above ground measuring seldom more 

 than 2 cm. in height, the vertical rhizome extends to a depth of about 2 . 5 cm. 

 and bears numerous slender, ramified roots. 



R. lapponicus L. 



Like Anemone Richardsonii and R. Pallasii, this species has a horizontally 

 creeping rhizome, and the ramification is monopodial until the first flower 

 appears. A young rhizome (Fig. I: 1) from a specimen collected on the south 

 coast of Coronation gulf thus shows part of the rhizome (R.) bearing two green 

 leaves (L^ and L^), while the terminal part of same rhizome (St.) is terminated 

 by a free bud; secondary roots, long and slender, are developed beneath the 

 first leaf (L^). 



