86. GKAMINA. 105 



1285. POLYPOGON LITTOEALIS, Sill. 



Area * 2 3 4. 



South limit in Hants, Kent. [Dorset?]. 



North limit in Norfolk, Essex. 



Estimate of provinces 3, Estimate of counties 4. 



Latitude 50 — 53. Germanic type of distribution. 



Agrarian region. Inferagrarian zone. 



Descends to the coast level, in Channel. 



Ascends, at the sea or coast level, to Ouse. 



Range of mean annual temperature 51 — 49. 



Native. littoral, Paludal. Quite local. I have seen 

 specimens from Hants (Dr. Bromfield), Kent (H. C. Wat- 

 son), and Norfolk (Mr. Babington). Mr, Dickson is 

 reported to have found it on the Essex coast, which is 

 probable enough. And Dr. Salter includes the name in 

 his list of plants growing within eight miles of Poole, in 

 Dorset. This last habitat is now rendered more probable 

 by Dr. Bromfield's subsequent discovery of the species in 

 two spots in Hampshire, its only known habitat on the 

 south coast of England, other than Dr. Salter's. But I 

 stiU hesitate to rely upon the single authority of the Poole 

 list in this respect, for two reasons combined. Fii'st, be- 

 cause there is only the name, with the sign of rarity 

 affixed, but no station specified ; while in upwards of a 

 hundred other instances, and many of them for much less 

 rare plants, special localities are mentioned. Secondly, 

 because I have had a maritime form of Agrostis alba, 

 from the south coast, sent or shown to me as P. littoralis, 

 in more than one instance, and by botanists fully as likely 

 to have correctly distingmshed the P. littoraUs and A. 

 alba, as was Dr. Salter at the date of his Poole list. 



