9 o 



5863 subsessilis Wats. 



5864 snrcnlifera Aven Nelson 



5865 ventosa A. Gray 



5866 verna L. 



Heterodraba 2 7 5 1 a 



5867 unilateralis (Jones) Greene 



(Draba unilateralis Jones) 



Nesodraba 275 Ib 



5868 grandis (Langsd.) Greene 



(Draba gra ndis Langsd . ) 



5869 megalocarpa Greene 



5870 siliquosa (Schlecht.) Greene 

 (Cochlearia siliquosa Schlecht.) 



[This genns is the Draba 

 hyperborea of the Synoptical 

 Flora.] 



Athy saiius 2754 



5871 pusillus (Hook.) Greene 



5872 glabrior Wats. 



Thy saiiocarpus 2755 



5873 amplectens Greene 



5874 conchuliferus Greene 



5875 planiusculus Robinson 



5876 crenatus Nutt. 



5877 cnrvipes Hook. 



5878 involutus Greene 



5879 elegans F. & M. 



5880 emarginatus Greene 



5881 erectus Wats. 



5882 hirtellus Greene 



5883 laciniatns Nntt. 



5884 pulchellus F. & M. 



5885 radians Benth. 



5886 ramosus Greene 



Smelo wskia 2758 



5887 calycina (Desv.) C. A. Meyer 

 Fremontii Wats. 



5889 ovalis Jones 

 Sophia 2759 



5890 andrenarum Cockerell 



5891 osmiaruin Cockerell 



5892 filipes (A. Gray) Heller 



5893 halictorum Cockerell 



5894 Hartwegiana (Fourn.) Greene 



5895 incisa (Engelm.) Greene 



5896 intermedia Rydb. 



5897 ochrolenca Wooton 



5898 pinnata (Walt.) Howell 

 (Sisymbrium canescens Nntt.) 



5999 Sonnei (Robinson) Greene 



5900 Sophia (L.) Britton 



5901 sophioides (Fisch.) Heller 



Steiiophragma 2761 



5902 Thaliana (L.) Celak. 

 (Sisymbrium Thaliamnn Gay) 



Arabis 2763 



5903 alpina L. 



5904 arcnata A. Gray 



5905 longipes Wats. 



5906 subvillosa Wats. 



5907 atrorubens Suksdorf 



5908 Beckwithii Wats. 



5909 blepharophylla H. & A. 



5910 Bolanderi Wats. 



5911 Bourgovii Rydb. 



(A. patula Graham) 



5912 brachycarpa (T. & G.) Britton 



(L. confinis Wats.) 



5913 Brebneriana Aven Nelson 



5914 Breutilii Lange 



5915 Breweri Wats. 



5916 Canadensis L. 



5917 canescens Nntt. 



5918 stylosa Wats. 



5919 Columbiana Macoun 



5920 Crandallii Robinson 



5921 Cusickii Wats. 



5922 dispar Jones 



5923 drepanoloba Greene 



5924 Drummondii A. Gray 



5925 exilis Aven Nelson 



5926 Fendleri (Wats.) Greene 



5927 filifolia Greene 



5928 fnrcata Wats. 



5929 glabra (L.) Bernh. 



(A . pcrfoliata Lam . ) 

 593 glaucovalvnla Jones 



5931 hirsuta (L.) Scop. 



5932 glabrata T. & G. 



5933 Holboelii Hornem. 



5934 Hookeri Lange 



