I860.] EXTRACTS FROM CORHESPONJ)KNCK. 381 



ber of Spergula arvensis, a plant not always found on a heath nor 

 heathy common, nor common of any sort^ excepting it be inter- 

 sected by a road; but which is almost always found in poor, 

 sandy, ill-cultivated cornfields. 



A painter miglit select a more unpromising scene than this for 

 the subject of a picture, a rural one of course; the botanist will 

 not easily meet with a more beautiful and productive spot within 

 not above a dozen miles from London Bridge. 



Another visit to this spot when time shall give us a longer 

 stay, will, I doubt not, enable us to find other plants of particular 

 interest to the botanist ; but should this slight sketch do no more 

 than record the station or locality of the elegant Campanula' 

 hederacea (called also, I believe, Wahlenbergia hederacea), I 

 trust it will be acceptable to your readers. 



I never met with this plant but once before, and then I found 

 it growing near Launceston, Cornwall, at a place called Trebartha ; 

 it grew in patches, and the flowers were larger than those of the 

 Keston plant. 



Additions to the Keston and Hayes List ; from another 

 Correspondent. 



" In a boggy part of Keston Common, not far from the source 

 of the Ravensbourne, I discovered yesterday (September 12, 1860) 

 seedling plants of Lastrea Thelypteris, and in the same bog there 

 was no end of Narthecium ossifragum, Salix repens, and Drosera 

 rotundifoUa. In barer places on the slopes of the ravine there 

 was great abundance of Lycopodium inundatum. Here were also 

 Carex (Ederi, Ei'iophorum angustifolium, Juncus lamprocarpus, 

 Juncus squarrosus, Peplis Portula, Radiola linoides (MillegranaJ ; 

 Ranunculus hederaceus, Nardus striata, and Potamogeton pecti- 

 natus, var. setaceus." 



Note. — The second rarest plant on Keston Common (the first 

 place is assigned to Wahlenbergia hederacea) is probably Lastrea 

 Thelypteris. The Editor would be obliged to any correspondent 

 who could inform the readers of the ' Phy tologist ' if this Keston 

 Common station be a hitherto unrecoi'ded one for this Fern. The 

 Keston Common station for Wahlenbergia hederacea was previ- 

 ously known, but unrecorded. 



