308 



stellata Jacq. from central Europe, as has been often 

 thought. 



The plant is at the first glance recognizable by the 

 dense covering of appressed, branched hairs. 



A slender form with linear- lanceolate pods is D. nivalis 

 v. tenella Lge. Gonsp. Fl. Groenl. = D. nivalis v. elongata 

 Wats. 



In Arctic regions found in Arctic America, West and 

 East Greenland, Spitzbergen, Kolguev, Novaya Zemlya and 

 the Tschuktscher-land. Beyond in the Rocky Mountains, 

 Labrador, Iceland, North Scandinavia, North Russia, Siberia. 



Dr aba incana L. 



In his monograph of the Scandinavian species of Draba, 

 in Botaniska Notiser 1839, Lindblom has combined the three 

 sections of De Gandolle: Chrysodraba, Leucodraba and Hol- 

 arges in one new section Drabeœ. I can agree that the two 

 first sections Chrysodrabœ and Leucodrabœ ought to form 

 one section, but I find, that the section Holarges must be 

 retained. It is true, that the species of this section are not 

 always biennial as supposed by De Gandolle, and that they 

 often produce new shoots with leafy rosettes in the second 

 year; but setting aside, that the rule is that they are bien- 

 nial, they have a quite different habit, in that the stems 

 have a large number of leaves and generally are branched 

 in the upper part (Fig. 19). 



Ehr h art has divided Draba incana into two species, 

 D. contorta and D. confusa, but the marks, upon which the 

 separation is founded, the covering, twisted or not twisted 

 pods, are very varying in the genus. 



D. arabisans Michx., D. incana v. arabisans Wats, has a 

 branched caudex, glabrous, pointed pods with an elongated 

 style. 



D. borealis DG. and D. Unalaschkiana DG. have a branched 

 caudex, broad leaves und pods with short styles. 



