61. AMARANTHACE^. 318 



Range of mean annual temperature 52 — 44. 



Native. Lacustral. This was admitted among the 

 " rarer plants " of England and Wales by the authors of 

 the original Botanist's Guide ; and it also came under 

 the prescribed test of rarity adopted for the New Guide, 

 with reference to Britain in general. Nevertheless, it ap- 

 pears to be a very widely, and almost generally distributed 

 species, when the area and census are taken by provinces 

 and counties, although absent from several of the published 

 Floras. Probably enough, its usually submerged situation 

 of growth, with its small size, may cause it to be frequently 

 overlooked. In some canals and ponds in Surrey it is so 

 abundant as to form a subaqueous pasture. 



907. Amabanthus Blitum, Linn. 



Area (^^ 234***4)?** 11). 



Alien. Found occasionally about towns and on the 

 coast; but so uncertain in its appearance as scarcely to 

 demand place in the lists of foreign species partially esta- 

 blished in Britain. 



Amaranth us retroflexus, Linn. 



Area (3). 



Alien. Mr. Ansell brought to me a specimen of Ama- 

 ranthus retroflexus, found on waste ground at Hertford ; 

 and I received one of the same species from Sawbridgeworth 

 last autumn. (Rev. W. H. Coleman, in letter of Sept. 14, 

 1846). 



