Botany. 173 



1579. P. littoralis, Sm. 6 7, P. Thames marshes ; extremely 

 rare, almost extinct. 



1. See Elgar's record above (1578). 



a. First record, 1804 : Plumstead Marshes ; Dod failed to 

 find it in '92. 



1763. APERA spica-venti, Beauv. (AGROSTIS, L.), 6 7, A Colonist ; 

 sandy fields ; rare. 



1. Casual, Plumstead Lane Brickfield. Dod. 



1767. AMMOPHILA arenaria, Link (ARUNDINACEA, Host. ; PSAMMA 

 ARENARIA, Beauv.), 6, P A sand-dune grass like Elymus 

 arenarius, ascending the Thames to the Isle of Grain. 



1769. LAGURUS ovatus, L. 67, A. Alien. 



1. In company with Mr B. Harrison, I found a solitary 

 pi. in an old chalk-pit off the Pilgrim's Road, 

 Trottescliffe, probably bird-sown, '99. W.H.G. 



(485) AIRA, L. 



1770. A. caryophyllea, L. 5, A. Dry sandy pastures and heaths; 



rather common. 



1. Keston and Chislehurst Commons, '07. L.C.C. 



2. Dartford Heath. H. 



a. Blackheath, Charlton Wood, Deptford, 1793. 



b. First record, 1805 : Greenwich. 



1771. A. praecox, L. 4 5, A. A tiny delicate grass common in dry 



sandy places ; very frequent on the commons and in hedge- 

 rows in the Weald. 



a. First record. 1785 : Blackheath. 



1773. A. caespitosa (DESCHAMPSIA, Beauv.), 7, P. A coarse, rough 

 grass growing in tufts ; very common in damp woody 

 places, especially on the Weald. 



a. First record, 1793 : Charlton Wood. 



1776. A. flexuosa, L. (DESCHAMPSIA, Trin.). 7, P. Abundant on the 



ommons. 



1. Daren th Wood. Reeves. 



2. Between Eynsford and Chelsfield. H. 



3. Hayes and Keston Commons, 1877. 



a. First record, 1793 : Blackheath, Charlton Wood. 



(488) HOLCUS, L. 



1777. H. mollis, L. 7, P. Thickets and open places on a light soil ; 



very deep-rooted ; common . 



