297 



centibus horrida, tota setis albis patentibus hispida, foliis anguste li- 

 nearibus, scapis brevibus, ovario lineari-oblongo hispidissimo, stylo 

 elongato. 



Hab. in alpinis ad jugum Koscliuck Affghaniac (Griff!). 

 Color florum e sicco incertus, silicula ignota, caeterum facies et indumentura 

 Aizopsidis (v. s. in herb. Kew). 



* * Golumnares . — Caules foliis vetustis persistentibus dense imbri- 

 catis columnares. 



D. rigida (Willd. Sp. III, p. 4-25) pulvinaris, foliis minulis bre- 

 vissime oblongo-linearibus carinatis obtusiusculis margine plus minus 

 remote et breviter ciliatis, scapis longiusculis glabris, petalis intense 

 aureis calyce 2 x / 2 plo longioribus, staminibus calyce sesquilongiori- 

 bus, racemis longiusculis, siliculis glabris elliplicis vel elliplico-linca- 

 ribus utrinque attenuatis planiusculis stylo brevi apiculalis %. Alys- 

 sum Orientale minimum foliis rigidis el lucidis Tourn. Cor. et herb! 

 A. dicranoides Boiss. et Huet Diagn. Ser. II, V, p. 30. 



Hab. in rupibus Arraenise (Tourn ! ) , supra Baibout (Huet!), ad Ispir 

 (Calv!), prope Gumuchkhane (Bourg!), in alpe Kasbek Caucasi (C.A. 

 Mey!). 



Folia brevia carinata more Sphagni vel Dicrani in columnas plus minus 

 elongatas irabricata. Siliculae ^^j^-ZMn. longae. 



(3. bryoides. Magis compacla, folia minora confertissima versus 

 scapi basin inflexa, facies Saxifragce bryoidis. D. bryoides dc. Syst. 

 II, p. 335. 



Hab. cura typo in rupibus supra Biibont (Hnet!), in Alpibus Caucasi 

 (Stev ! ). 



D. imbricata (C.A.M. Enum. p. 182) densissime pulvinaris nana, 

 foliis minutissimis oblongis triquetris obtusis ciliatis densissime im- 

 bricatis, racemis glabris 3-5 floris subsessilibus, petalis inlense aureis 

 calyce duplo longioribus, filamentis calyce sesquilongioribus, siliculis 

 glabris ovato-orbiculatis planiusculis stylo brevissimo % . 



Hab. in lapidosis Alpium Caucasi occidentalis (C.A.M!). 



Facies omnino D. rigidce var. bryoidis sed minor, caules brevius colum- 

 nares diametro vix sesquilineam lati, siliculse forraa? diversaB sesquilineam 

 tantum longse stigmate subsessili. 



Sect. II. Chrysodraba dc Syst. — Perennes cespitosce flavifloro?, 

 folia rosulata pube molli velutina subenervia , scapi 

 aphylli. 



* Siliculae loculi 2 4 ovulati. 



D. alpina (L. Sp. 896) foliis dense rosulatis obovatis vel oblongo- 



