144 4. CRUCIFER.E. 



94. TURRITIS GLABRA, Linil. /^yy/fY / jaj 



Area * 2 3 4 5 * ^ 8 * 10 11 * 13 * [15 16]. 



South limit in Dorset, Hants, Kent. 



North hmit in Lanark.shire or Dumbaii,onshire. 



Estimate of provinces 10. Estimate of counties 30. 



Latitude 50 — 56. Enghsh type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends nearly to the coast level, in the Channel. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 50 — 47. 



Native. Rupestral, &c. On hedge-banks, old walls, in 

 quarries, and by road-sides ; not exactly according with 

 any of my teims to express situation of gi-owth. Neither 

 is its distribution so uniform or regular as that of most 

 other native species : whether we tiy it by places (locali- 

 ties) or by larger spaces (counties or provinces) we find it 

 irregularly dotted over the countiy, with many and wide 

 intervening blanks, as shown by the asterisks in the line of 

 figures which indicate the ai'ea. The two most northerly 

 localites of which I have any memoranda, are, Kinnaii'd, 

 in Forfarshire, on the authority of the late George Don ; 

 and BowUng Bay, by the Clyde, on the authority of the 

 ' Flora Glottiana.' The former of these locahties seems to 

 need confirmation ; and as to the latter, I cannot say on < %^tUt 

 which bank of the Clyde, north or south. Bowling Bay is » *y*»t 

 situate. A specimen is in my herbarium, which came 

 among a parcel of Lanarkshire plants, fi'om Dr. Hooker ; 

 the specimens in the parcel, according to agreement, not 

 being severally labelled. 



