80. ALISMACE^. 479 



Butomus is thought to have been introduced by botanists 

 or others. 



>4<^ /W./f/^ / 1115. Triglochin maritimum, Linn. 



Area general -r^ 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Shetland, Orkney, Hebrides. 



Estimate of provinces 18. Estimate of counties 50. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends, at the coast level, to the North Isles. 



Range of mean annual temperature 52 — 45. 



Native. Littoral. All around the coast of Britain ; 

 and not unlikely it might be found in somewhere about 

 fifty-five counties, or midway between the steps of 50 and 

 60 in the census scale. Still, 1 am compelled to put even 

 its provincial generality as interrogative or questionable, 

 from not being prepared to quote any authority for it on 

 the Lincolnshire coast, that is, for the province of Trent. 

 This is one of the maritime plants which occurs far inland 

 in the province of the Severn. 



1116, Triglochin palustre, Linn. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 

 North limit in Shetland, Orkney, Hebrides. 

 Estimate of provinces 18. Estimate of counties 80. 

 Latitude 50 — 61. British type of distribution. 

 A. A. regions. Inferagrarian — Midarctic zones. 

 Descends to the coast level, in the Peninsula. 



