4. CRUCIFER^. 165 



Estimate of provinces 6. Estimate of comities 12. 



Latitude 51 — 57. Atlantic ty|je of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends to the coast level, in South Wales. 



Ascends, on the coast level, to West Highlands. 



Range of mean annual temperature 50 — 48. 



Native. Littoral. Inhabits sandy gi'ound on the west 

 coast, fiom Glamorganshire (Mr. Moggi-idge, Bot. Soc. 

 London, sp.) to Bute (Dr. Hooker, sp.) or Skye (Ray, 

 Hudson) . For the present, I have given its range of lati- 

 tude and temperature only to Bute ; to which a degree 

 must be added for Skye, pro\ided the plant really gi'ows 

 there. In English Flora, on the authority of Mr. G. Don, 

 Smith reports this species from the East Highland pro- 

 vince, " between Dmidee and Forfar." This locality is in 

 itself suspicious for a plant otherwise limited to the western 

 coasts ; I am unaware that Mr. Gardiner, or any other 

 Scottish botanist, has confinned its coiTectness ; and 

 though there is a specimen from Don, preserved in Smith's 

 herbarium, that specimen appears to my eyes not a wild 

 example of this species. 



r/^. ///J.J<f^ 12.3. SiNAPis Cheiranthus, Koch. 



Ai-ea * * * * * [6] . 



Incognit, in England. Sarnian. Mr. C. C. Babington 

 records this plant as a native of Jersey and Alderney. But 

 probably the S. monensis was mistaken for it in Gla- 

 morganshire. I have a note from Mr. Chmchill Babing- 

 ton, intimating that Mr. C. C. Babington had discovered 

 the S. Cheiranthus on "Penard Sands;" and in the thii'd 

 volume of the Magazine of Natural History, New Scries, 

 Mr. T. B. Flower ])ublished the locality, on the apparently 



