72 — 



Abundat in graminosis humidioribus (Weinm. 1824). In 

 Suecia teste Friesio tantum e cultvira superstes. 



1. Arabis pendula L. Ledeb. Fl. Koss. In sepibns prope 

 Pawlowsk sponlanea sed rarissima*, specimen anno 1820 a 

 cJ. \\ einmann detectum exacle convenit cum Charcoviensibus. 

 Huc special A. Turrila Petropolitana (Weinm. 1824; Turcz; 

 Ledebour). 



0. Arabis Gerardi Besser ex Kocb (A. planisiliqua Rcbb. 

 hg. 4343). In siecis v. g. ad margines agrorum pr. Oranien- 

 baum (ipse); Grafsky Slavianka. (Hb. Weinm.) Huc nume- 

 ravi A. sagillatam Fi. Petrop. Aeque rara bic adesl A birsuta L- 



1. Sisymbrium Tbalianum Gand. Petropoli in hortis ole- 

 raceis (K raseben 1 ex Gorler)-, Koirowa (Gorter 1764) 5 ad 

 pagos circa viam Schlüsselburg. (Sobol.); in arenosis sieeis 

 ad et sepes prope Pawlowsk rarius (Weinm. 1824 et ex 

 Ledeb. Fl. Koss.); ad viam Pargolensem, canalem Ligovvae 

 et alibi (Turcz ); sat frequens in siccis, ad vias el inter se- 

 getes ! 



I. Sisymbrium arenosnm m. et non dubito etiam Linn. 

 Fl. Snec. (non Spec. pl ) sailem maxima ex parte. PelropoK 

 (Prescott in Hb. Meyer 1830): in horlo Im per. botanico olim 

 spontanen m! (G. A. Meyer); in arenosis pr. Pargolam (Hb. 

 Graewenitz). Formam annuam vidi in ruderibus lapidosis pr. 

 Pawlowsk et in monte Duderhof-, eadem planta est Sisym- 

 brium Thaliannm ß. lyratum Koch et Fries 1843, Hb. norm. 

 Suec. VII. 14. Al lubenter ad opinionem novissimam cel. 

 Fries, in Hb. norm. X. typicum pro specie propria s. n. 

 „Arabis sueeica" exhibentis accedo, licet generi „Arabi- 

 dopsis " inscribere mallem. Sisymbrium hoece et Arabis 

 arenosa planlae sunt sibi interdum simillimae et hurusque 

 sine examine situs radiculae in semme vrx tuto discernendae, 

 hinc alios characteres quaerens Optimum ut credo (micros- 

 ( opio tarnen romposito inspiciendum) e testa seminum desu- 

 mendum propono; haec enim bumefacta setulas e cellulis 

 superfjcialibus mox protrudit vel erigit , tum in Sisymbrio 

 arenoso, tum in Thaliano, numquam vero, examinatis specc. 



