173 BRITISH oiiCHiDs. [June, 



an interleaved copy of Blackstone's ' Harefield Plants ' worth a 

 corner in your interesting journal^ they are much at your service; 

 you might call the paper a chapter on Orchises of a hundred years 

 ago. Z. 



Kew, March, 1861. 



A Chapter on Orchids, etc., of the last Century. 



Notes and additions in an interleaved copy of ' Blackstonfe/ 

 which formerly belonged to Peter Collinson, in whose hand- 

 writing they are, in part, and in that of his son Michael Col- 

 linson. 



At page 41. — Paris quadrifolia : the Herb Paris grows in great 

 abundance in Grass Farm Wood, opposite the eighth milestone, 

 in the Mill Hill road, the only place I ever found it, April, 1766 ; 

 and in Caper's Wood, between the seventh and eighth milestone, 

 grows the black Hellebore, with a green flower {Helleborus viridis); 

 flowers at Christmas; found it in March, 1765. 



At page 67. — Listera Nidus-avis : found in the year 1755, in 

 the Duke of Portland's woods at Bulstrode. 



Orchis militaris : found in 1759, in bushy dry banks, going to 

 Greenford {sic) Green, near to Dartford; also near the great 

 Beech-trees, so remarkable a landmark in Kent, as you go to 

 Sevenoaks : this in 1758, and it flowered finely in my garden at 

 Mill Hill, in 1760. 



Orchis fusca : found this fine Orchis in an old chalk-pit in the 

 Duke of Portland's Park ; and it, together with the above, flowers 

 finely in the Orchis bed at Mill Hill. — Note. I have with great 

 care searched the chalk-pit at Harefield repeatedly, but was never 

 able to find either this or the above. 



Orchis mascula : in many places about MiU Hill, with a white 

 flower. 



At page 68. — Orchis Mario : in many fields near Mill Hill, 

 both with white flowers and with almost every variety of red. 



Ophrys muscifera : I found this in a chalk-pit at Harefield, 

 but not in the one described by Mr. Blackstone, where I have 

 often searched for it without success, 1758; it continues to flower 

 in our Orchis bed here annually. 



Orchis latifolia : near Rickmansworth, plentifully ; flowers with 

 us at Mill Hill. 



Orchis maculata (?) : I saw this species near Newbury, Berks, 



