v1] MARSH AND AQUATIC ASSOCIATIONS 155 
| In In non- 
calcareous | calcareous 
| waters | waters 
| 
Equisetum maximum | vr vr 
E. palustre | ) ) 
E. limosum ) | la 
Polygonum amphibium r r 
*Nasturtium amphibium a | r 
N. palustre a) r 
“Lythrum Salicaria” vr 2 
Epilobium hirsutum | a | la 
Angelica sylvestris | ) ) 
*Lysimachia vulgaris { = vr 
Stachys palustris a) ) 
Veronica Anagallis oy) — 
Eupatorium Cannabinum | Oo r 
*Bidens tripartita | — r 
*Typha latifolia Ov eee vr 
Sparganium ramosum | rtoo r too 
*S. simplex vr | vr 
Triglochin palustre / vr vr 
Alisma Plantago r r 
*Sagittaria sagittifolia vr vr 
Phalaris arundinacea | la la 
Agrostis alba r too r too 
Phragmites communis vr vr 
Glyceria aquatica la la 
Eleocharis palustris oe vr 
Carex remota vr r 
C. inflata | 
(=C. ampullacea) r r 
C. acutiformis | 
(=C. paludosa) | r | r 
C. vesicaria vr | r 
*Acorus Calamus = vr 
Juncus effusus ] la 
J. inflexus | la | 1 
(=J. glaucus) — vr 
Tris Pseudacorus | — — 
THE VEGETATION OF QUICKLY FLOWING STREAMS 
(“The hydrophyte formation round springs and streamlets.” 
Ostenfeld, 1908 : 943.) 
The streams of the Pennine slopes are characterized by their 
quick current and their shallowness. A result of their quick 
current is that the water is well aérated; and this factor is 
