CRUCIFER/E. 13 



Hesperis matronalis, Linn. 



3. Near Looe gas-works, but now disappeared, Mrs. and 



H. M. M. Perrycoste. St. Blazey, 1920, Medlin. 

 5. Lambourne Hill, Perranzabuloe, Rilstone. Duchy Peru, 



Perranzabuloe, Tresidder. 



maritima, Scop. 6. Waste-ground between Truro and 

 Malpas, 1917, MissM. Cobbe. 



Sisymbrium Thalianum, Gay. 



3. Hedge bank in lane from Portlooe Farm to West Looe, 

 Mrs. and H. M. M. Perrycoste. Among railway ballast, 

 Lostwithiel, 1920, Thurston. Par Harbour, 1922, Medlin. 

 Ballast-heap, Charlestown (very large plants) 1920, Tresidder. 



5. Shepherd's Station, Vigurs, R./.C., /9//, p. 376. 



7. Kynance, 1912, Miss A. Vellacott. Pradannack Downs, 

 1914, Miss M. Cobbe. 



S. officinale, Scop. var. leiocarpum, DC. 



Mr. Rilstone finds that, in Cornwall, this is " almost certainly 

 an alien, occurring near docks and mills, usually in company 

 with other obvious aliens, as at Par, Charlestown, and 

 Falmouth. At Par, in the neighbourhood of the docks and 

 Beaver Mill, the variety is far more plentiful than the type, 

 while a short distance inland the type only is represented. " 

 Journ. Bot., 1918, p. 114. "Often of adventitious origin,*' 

 Druce, B.E.C., 1918, p. 488. ' This variety is much commoner 

 in America than true S. officinale." B.E.C., 1913, p. 451 . 



S. pannonicum, Jacq. 



3. Bodmin Road station, 191 8, Harvey. Ballast-heap, Charles- 

 town, 1916, Tresidder. 



5. Newquay, 1911, Vigurs. Perranwell, Perranzabuloe, 1911, 

 Tresidder. 



6. Grampound Road station, 1922, Borlase. Waste-heap, 

 Penryn, 1921, Tresidder. 



S. Sophia, Linn. 



3. One plant, Par, 1910, Druce, Journ. Bot., 1911, p. 303; 

 B.E.C., 1917, p. 95. Par and Par Harbour, Miss M. Cobbe, 

 B.E.C., 1917, p. 95. 



