90 
\V. Watson. 
forms a fairly definite border. H. stellatum appears to belong to 
the same zone ; it may be intermixed with either H. intermedium, 
H. giganteum or H. cuspidatum, but sometimes occurs on drier 
ground than any of these. As is the case with H. cuspidatum it is 
commoner in the flatter portion of the field than between the 
Molinia tussocks. Sphagnum subsecundum occasionally becomes 
dominant in this zone and is intermixed with Calypogeia trichomanis. 
In this zone we find the following plants:— 
Lychnis flos-cuculi f O. ericetorum o 
Lotus uliginosus f Carex helodes I 
Lythrum salicaria o (chiefly near thicket). 
Epilobium palustre a Equisetum palustre f 
Cnicus palustris f „ maximum I (shaded places) 
„ pratensis f Sphagnum subsecundum Id 
Erica tetralix d Hypnum cuspidatum d 
Anagallis tenella sd „ stellatum a 
Orchis latifolia o Calypogeia trichomanis f 
VI. Zone of Brachythecium purum. Where the dominant 
vascular plant is Molinia ccerulea the ground, though damp, yields 
few bryophytes, the competition of the grass being too severe. The 
floristic composition of this zone is as follows:— 
Lychnis flos-cuculi o 
Lotus uliginosus o 
Angelica sylvestris f 
Genista anglica o 
Rubus idoeus 1 
(in or near thicket) 
Eupatorium cannabinum o 
Cnicus palustris o 
,, pratensis o 
Erica tetralix o 
Habenaria bifolia I 
Luzula multiflora a 
J uncus effusus a 
,, conglomeratus a 
Molina coerulea d 
Agrostis canina f 
Nardus stricta f 
Sphagnum papillosum If 
„ var. confertum If 
„ subnitens o 
„ var. purpurascens o 
Brachythecium purum a 
Hypnum cupressiforme var. erice¬ 
torum (drawn form) o 
Aneura multifida (tufted form) o 
Cephalozia connivens o 
Lophocolea bidentata o 
Calypogeia trichomanis o 
The only moss present in abundance is Brachythecium purum 
but sometimes the colour-variety purpurascens of Sphagnum subnitens 
is frequent. Intermingled with the lower portions of this and 
therefore in a more protected habitat, is Cephalozia connivens, whilst 
on the surface a somewhat tufted state of Aneura multifida (Fig. 6, G) 
is present, the crowded thalli protecting each other against the 
unusual evaporation to which they are exposed. Sphagnum 
papillosum, and especially its variety confertum, also occurs, the 
crowded and congested character of the variety enabling it to live 
in a drier situation than the type. Very complanate and green 
forms of Hypnum cupressiforme v. ericetorum with well-developed 
auricles also occur. 
