30 ♦ 



D. repens (MB. Taur. Cauc. II, p. 93), viridis, stolones elongatos 

 laxe foliosos edens, foliis pube sparsa adpressa simplici et bipartita 

 hirtulis oblongo-lanceolatis acutis integris, scapis elongatis, pelalis 

 obovalis retusis calyce duplo longioribus, racemis fructiferis elongatis, 

 siliculis pedicello ereclo-patulo eis 2-3 plo longiori suffultis ellipticis 

 acutis planis, stylo brevi, loculis sub 16 ovulatis ¥ . 



Hab. in graminosis alpium Caucasicarum (MB. Hohen !). 



Silicula 2-27 2 lin. longa. 



Ar. Geogr. Sibiria Altaica, montes Uralenses. 



Sect. III. Leucodraba. dc. Syst. — Perennes cespitosm albifloro? , 

 folia rosulata indumento molli velutina, scapi aphylli 

 vel foliosi. 



D. Armena (Boiss. Ann. Sc. Nat. 1842, p. 167) pube ramosa 

 dense albo-tomentosa, scapis aphyllis, foliis ellipticis integris, pctalis 

 calyce duplo longioribus, siliculis pilis slellatis hirtis ovalis basi et 

 apice atlenuatis, stigmate subsessili. 



Hab. in Armeniji (Auch. exs. 4060!). 



Facies D. frigida a qua, differt scapis apliyllis; flores eis ejus submino- 

 res, silicula l 1 /^"^ Hn. longa. Differt a D. Lapponicd et aliis speciebus 

 scapo nudo interdum donatis indumento denso et silicula, hirta. 



D. lasiophylla (Royle Illustr. p. 71! Bunge in Lehm. p. 199!) 

 laxe cespilosa tcta pube stellata canescens, scapo nudo longiusculo, 

 foliis oblongo-lanceolatis integris, racemo 4-9 floro, floribus majus- 

 culis, siliculis stellatim hirtis pedicello suo longioribus oblongo-lan- 

 ceolatis basi et apice attenuatis, stylo brevi % . 



Hab. in monte Karatau supra Samarkand in Turkestania (Lehm !). 



Scapi sexpollicares , siliculae 6-7 lineas longse 1 Y* ' at3e I facies D. fri- 

 gidce sed omnibus partibus major. Plantam Roylei tantum descriptione 

 novi et specimen Lehmannianum nimis imperfectum est, ideo determinatio 

 incerta. 



D. siliquosa (MB. Taur. Gauc. II, p. 94) scapis 1-3 phyllis, 

 foliis pube ramosa pilis simplicibus intermixta griseo-virentibus lineari- 

 lanceolatis integris vel utrinque 1-3 denticulis obsitis, pctalis calyce 

 subduplo longioiibus, racemis fructiferis elongalis, siliculis glabris 

 pedicello erecto-patulo longioribus lineari-oblongis, sligmate ses- 

 sili ^r. 



Hab. in regione alpinS Armenise Turcica^ circa Baibout (Ky!), Kocha- 

 pounar (Hnet!) et Gnmuchkhane (Bourg!), in ditione Karabagh (Szow!), 



