11] INDICATOR-PLANTS 31 
P. Behmeri (Eastern counties, rare). 
P. asperum Be fs a 
Phalaris canariensis (rare weed). 
Alopecurus alpinus (Highlands). 
Mibora verna (Anglesea and Channel Islands). 
Lagurus ovatus (Suffolk coasts). 
Polypogon monspeliensis (rare, in S. England near sea). 
P. littoralis (salt marshes 8. England). 
Agrostis setacea (dry heaths of S. Wales). 
A. Spiea-venti (sandy fields of E. counties). 
Gastridium lendigerum (fields and waste places in 8. Wales 
and Norfolk). 
Calamagrostis Epigeios (moist glades &c. in Scotland). 
C. lanceolata (moist shades, scattered in England). 
C. stricta (bogs, &c., very rare). 
Cynodon Dactylon (waste and cultivated lands near sea in Scot- 
land). 
Spartina stricta (salt marshes S. and E. coast). 
Lepturus incurvatus (scattered on shores). 
Bromus maximus (Jersey). 
B. madritensis (roads and waste, Scotland and Tipperary). 
B. inermis (introduced from Hungary). 
Lolium italicum (introduced from Lombardy). 
Festuca uniglumis (Irish and 8.E. coast). 
Poa procumbens (waste ground near sea). 
P. loliacea (sandy sea-shores). 
P. laxa (Ben Nevis, &c.). 
P. alpina (Highlands and N.). 
Catabrosa aquatica (shallow pools and ditches, scattered). 
Finally, a few words may be said on a subject still 
in its infancy—that of Indicator-plants. In many cases 
certain plants are found so confined to certain classes of 
soil, that foresters and agriculturists have claimed to be 
able to infer from their presence the presence or absence 
of certain chemical or other constituents of soils: on the 
contrary we find other plants so universally distributed 
