78 The Flora of Wiltshire. 



sexangulare" than the small fragments of wall at " Old Sarum." 



5. S. reflexnm, (Linn.) reflexed yellow Stonecrop. Engl. Bat. t. 

 695. 



Locality. Old walls occasionally. P. Fl. July, August. Area, 

 * 2. 3. 4. * 



South Division. 



2. South Middle District, Old walls at Seend. " Westbury," 

 Mrs. Overhury. 



3. South-west District, " Corsley," Miss Griffith. " "Warminster," 

 Mr. Wheeler. 



North Division. 



4. North-tcest District, Walls at Winsley and Sandy Lane. 

 "Chippenham," Dr. Alexander Prior. "Malmesbury," Mr. Edimrd 

 Bull. Most of the localities for this plant being on garden 

 walls, and the ruins of old buildings, it may possibly not be truly 

 native in Wilts. 



6. S. dasyphyllum, (Linn.) thick-leaved Stonecrop, has been 

 observed at Purton, (District 5,) by 3Ir. Edward Hull. It should 

 be looked for in other parts of the county. 



Many of the species of this genus are difl&cult to distinguish from 

 each other, owing to the influence which the situation in which 

 they have grown has had upon them, for they flourish well either 

 upon the dripping rock beneath the shade of trees, or exposed to 

 every change of atmosphere on the tops of walls, ruined buildings, 

 rocks, etc., and in accomodating itself to all these varieties of 

 existence it is not surprising that it should be variable in its 

 characters. 



l_Sempervivum tectorum, (Linn.) common House-leek. Engl. Pot. t. 

 1320. Occasionally observed on the roofs, and walls of cottage 

 gardens (planted) in Wilts. It has no pretentions whatever to be 

 considered native.] 



Cotyledon, (Linn.) Navelwort. 

 Linn. CI. X. Ord. i. 



Name. From kotyle, (Gr.) a cup, to which the leaves of some of 

 the species, bear a distant resemblance. 



