Botany. 67 



623. S. acre, L. (BITING STONE-CROP), 6 7, P. Walls and dry 



places ; common. 



1. Plentiful on Hayes and Keston Commons in a starved 



form, '06. W.H.G. 



2. Walls of St. Mary's Churchyard, Woolwich, '07. J.F.B. 



624. S. sexangulare, L. Alien ; on old walls ; very rare, probably 



extinct. 



a. South side of Greenwich Park wall (1787). 



625. S. reflexum, L. 7 8, P. Alien ; walls and dry places ; rather 



frequent. 



1. Well-established on Keston Common among brambles. 



Near the Mill, '06. W.H.G. 



2. Bromley. Cole. 



3. Chelsfield. H. 



626. S. rupestre, L. A very rare alien on old walls. 



1. Higham Street. H. 



628. SEMPERVIVUM tectorum, L. (HOUSELEEK), 67, P. 



Alien ; walls and roofs (to keep the slates in position) ; 

 always planted ; not uncommon. 



1. Red Hill, Chislehurst ; near Erith Station. Dod. 



2. On roof of old cottage behind the " Fox and Hounds,'* 



Eynsford, '06. L.C.C. 



NOTE. To this order also belong the fleshy-leaved Crassulas and 

 Cotyledons and Bryophyllum, the edges of whose leaves, if pinned to 

 the ground, bear adventitious plants. 



N.O. 2. SAXIFRAGACE&. 



(214) SAXIFRAGA, L. 



598. S. tridaetylites, L. 4 7, A. Walls and v. dry places ; com. 



1. Garden Wall, Down Village, '03. W.H.G. 



2. Wall, W. side of Bromley Road, Southend, '05. W.H.G. 



3. Old gravel pit by road below W. side of Hayes 



Common, '07. W.H.G. 



a. Old Wall at Farnborough. A.D.W. 



b. Wall in Hayes Village, '79. Dr. Playfair (now extinct). 



c. W. Wickham, '95. Sc. 



d. Lane to Blackheath, '00. C.H.G. 



595. S. umbrosa, L. (LONDON PRIDE). The plant us. found in 

 gardens is var. b. punctata, sometimes met with as an 

 escape. 



