SAXIFRAGACE.E. 161 



VI. ^Yall-top, and by the roadway to Cleave, near Ivybridge. 

 First record : Gourjh, 1806. 



S. alhum^ L. On a wall close to a house at Trehan, St. Stephens ; no 



doubt planted origmally. It occurs also in a few other places as an 



introduction. 



SEMPERVIVUM, L. 



309. S. tectorum, L. Common Houseleek. 



Alien ; on roofs of houses and cattle sheds, and on walls ; but 

 only where planted. Rather common. 

 I have noticed it m every District except vi., and have no doubt it 

 may be seen in all, but strictly speaking it ought not to be numbered 

 among the species of the area, being clearly an mtroduction, which, 

 unlike many others, never propagates itself by seed, nor spreads to any 

 distance from the spots where it has been planted. I name it in accord- 

 ance with general custom, and because it is probably as ' wild ' here as in 

 any other part of the kingdom. 



COTYLEDON, L. 



310. C. Umbilicus, X. Common Navel-wort ; ^ Penny Pies' 



Native ; on rocks, dry or stony banks, damp walls and roofs, and 



the mossy boles of trees. Very common. Part of May, Jime. 



Area general. 



Grows on walls and old hedge-banks close to Plymouth, as at Mutley 



Plain, Tothill Road, &c. ; extends over all the enclosed and wooded 



country ; and is found m the hollows of the rocks and walls of the wilder 



tracts. In Herh. Bo/rer, at Kew, there is a specimen labelled, " Stem of 



the old oak at Meavy, July 25th, 1839." 



Through the winter and early spring the large, round, deep green, root- 

 leaves (' Penny Pies ' of the coimtry children) of this plant cluster on our 

 damp mossy walls and shady hedge-banks, and form one of the most 

 conspicuous objects among the scanty vegetation of the winter season. 



SAXIFRAGACE^. 



SAXIFEAGA, L. 



311. S. tridactylites, L. Rue-leaved Saxifrarje. 



Native ; on wall-tops and very dry banks. Common. jNIarch to 

 May. 

 c. I. Sheviock village, and near Polscove. Hessenford. Tideford. Near 

 Trerule. Heskyn. Landrake. 

 II. Between Torpoint and St. Johns ! ; between Cremyll and Maker 

 Church ; Keys, Fl. ii. 164. Lower Tregantle. Between Mill- 

 brook and Kingsand. Landulph. Haltun Quay. 



M 



