125 



:239. Semiua l*via; folia a racemis remota ___ ___ — — Th. perfoliatum L, 



Semina longitudinaliter striate -sulcata; usque ad racemos 

 crebre foliatum___ ___ _^_ .__ .._ — — — Th. arvense L 



i40. Siliculff plane exalata?.- _„_ — — ___ — — — --- -: — - 241 

 SiliculiB alatœ 244 



241. Silicula 3-angularis 242 



Silicula utrinque attenuata elliptiea ovális v. subrotunda... 243 



242. Silicul* lateraliter rectilinefe .^^ .._ ___ __. -._ — Th. bursa pastoris L 



Siliculse utroque latere insigniter excavatae __^ — Th. rubellum Reut. 



243. Eacemi elongati multiflori : silicul* elliptica-î ._ Th. procumbens Wallr. 



Eacemi pauciflori ; siliculae subrotundfe .__ — — Th. pauoiporum. 



244. Eacemi fructiferi valde elongati ._. ___ ... — .-. — Th. alliaceum L 



Eacemi fructiferi brevissimi ... ._. ._. .^. -._ ... .-. ... ... 245 



245. Eobustum a basi ramosum ... ... .. ... — ... ... Th. rivale Presl. 



Vix pollicare, simplex ... ... ... Th. pygmœum ^iv. 



246. Pygmsa 247 



Elatiora et robustiora... ... ... ... ... ... — — .. — ... 248 



247. Petala rosea... .. Th. stylosum Nym. 



Pet;üa alba ... ... ... ... ... — ... ... — Th. microphyllum B, et 0. 



248. Eadix crassa napiformis (folia basilaria ovato-orbiculata ab- 

 rupte petiolata intense violacea ; racemus fructiferus elonga- 

 tus ; siliculfe e basi breviter cuneata obcordatse alis rotundatis ; 

 stylus sinum superans) Th. bulbosum Sprun. 



Eadix baud incrassata ... — ... — ... — ... ... — — ... 249 



249. Siliculffi aptera- vel subapterae angustissime obsoleteve ala- 



tft" ; racemi fructiferi abbreviati ... ... ... ... ... ... — ... — 250 



Siliculse distinct! ssime alatfP, ala saltem loculi dimidia ad 

 minimum sequilata... ... ... ... ... ... ... ... ... — — ... — 255 



250. Eacemi contracti umbelliformes ; flores plerumque violacei... 251 



Eacemi magis elongati ; flores semper albi ... ... ... ... ... 254 



251. Folia basilaria insensibiliter attenuata; siliculae apice rotun- 

 dat» 252 



Folia basilaria abrupte petiolata; silicul» apice leviter 

 emarginatae -.. ... ... ... ... ... — ... — ... — ... - - 253 



252. Petala violacea Th. bellidifolium Gris. 



Petala alba — ... — — — — — — Th. nevadense B. et R. 



253. Folia caulina superiora basi auriculato-amplexicaulia : 



Th. rotundifoiium Gaud. 

 Folia exauriculata . .. Th. cepeaefolium Koch. 



254. Th. stenopterum B. et R. 



Th. sylvium Gaud. 



