LOCALITIES. 



141 



Orchis pyramidalis. 

 *0rigarmm vulgare. 

 *Petroselinum yegetum. 

 *Phragmites communis (ditches). 

 *Picris hieracioides. 



Reseda hitea. 



Rumex maritimus; palustris; *Hydro- 

 lapathum. 



Salicornia herbacea. 

 *Salvia verbenaca. 

 *Saponaria officinalis (wood). 



Saxifraga granulata (Woodford wood). 



Scabiosa Columbaria. 

 *Sclerochloa maritima ; distans. 



*Senecio erucifolius. 

 *Sinapis nigra.* 



Smyrnium Olusatrum. 



Solidago Virgaurea (woods). 



Specularia hybrida (cornfields). 

 *Statice Armeria. 

 *Suaeda maritima. 



Tilia parvifolia (Woodford wood). 

 *Triglochin maritimum ; palustre. 



Verbascum Thapsus ; nigrum. 

 *Verbena officinalis. 

 *Viburnum Lantana. 



Vicia hirsuta ; *Cracca. 



Note. Polypogon monspeliensis (formerly, on the other side of the 

 ditch towards Raynham) ; also Tragopogon porrifolius, &c. ; Ophrys apifera 

 and Aceras ; chalk-pits. 



37. GREENHITHE AND DARTFORD. 



Opposite Purfleet, and on the other side of the river, are the Stone and 

 Dartford Marshes, similar in character to those between Erith and 

 Woolwich, backed by the chalk slopes about Dartford and Greenhithe, and 

 traversed by the joint current of the Darne and Cray which enters the 

 Thames directly opposite Purfleet. Dartford lies at some little distance 

 back from the banks of the river, but this makes here a reach to the 

 south-east, and comes close up to the chalk banks at Greenhithe further 

 down. The vegetation is similar in character to that of Purfleet ; subsoil 

 of the flats, alluvial. 



The chalk-pits about Greenhithe are of vast extent, and but for their 

 surroundings the older ones have little in their aspect to indicate their 

 origin.. Fields, orchards, habitations, occupy their areas ; and one of 

 them is crossed by the North Kent line of railway. 



MARSHES AND RIVERSIDE. 



*Apium graveolens. 



* Artemisia maritima. 



*Aster Tripolium. 



* Atriplex littoralis ; portulacoides. 



*Beta maritima. 



*Carex divisa. 



*Ceratophyllum aquaticum. 



*Cynoglossum officinale (ditch banks). 



*Festuca Myurus. 



*Glaux maritima. 



*Hordeum maritimum. 



*Hydrocharis Morsus-ranas. 

 *Myriophyllum spicatum. 

 *Plantago maritima. 

 *Samolus Valerandi. 

 *Scirpus maritimus. 

 *Sclerochloa maritima. 

 *Spergularia neglecta. 

 *Statice Limonum. 

 *Suseda maritima. 



Trifolium maritimum. 

 *Triglochin maritimum; palustre. 



Triticum junceum. 



ROADSIDES, FIELDS, CHALK-PITS, AND BANKS. 



The country about Dartford is elevated to a small extent only above the 

 level of the flats, with a gravelly subsoil overlying chalk ; chalky in many 

 places. 



Aceras anthropophora (Greenhithe pits). Ajuga Chamaepitys (fields). 

 Adonis autumnalis (cornfields ?). - *Anchusa arvensis. 



*Agrimonia Eupatoria. *Antbyllis Vulneraria. 



