65 
No. 3. Cleared January, 1865 
In 1866 Galium saxatile was a very prominent plant. 
21. Ranunculus bulbosus. 
283. Lotus corniculatus. 
332. Potentilla Tormentilla. 
340. Rubus fruticosus. 
517. Galium saxatile. 
671. Achillea Miliefolium. 
750. Veronica serpyllifolia. 
756. 
952. 
1151. 
1313. 
1314. 
Veronica officinalis. 
Rumex acetosella, strug- 
ling for existence against 
the Holci. 
June us effusus. 
Holcus lanatus. 
„ mollis. 
12 species. Here the Holci are acquiring possession of the ground 
to the exclusion of other species. R. acetosella alone making a 
feeble struggle against them. 
No. 4. Cleared January, 1864. 
21. Ranunculus bulbosus. 
283. Lotus corniculatus. 
332. Potentilla Tormentilla. 
339. Rubus Idoeus. 
340. „ fruticosus. 
588. Taraxacum officinale. 
778. Digitalis purpurea. 
944. Rumex crispus. 
952. „ Acetosella. 
1151. Juncus effusus. 
1291. Agrostis vulgaris. 
1313. Holcus lanatus. 
1314. „ mollis. 
1339. Dactylis glomerata. 
14 species. Here Holcus lanatus and mollis cover more than 
seven-eighths of the ground, the next plant in number being 
Rumex Acetosella, the specimens of which are poor and stunted » 
the species evidently unequal to struggle with the Holci. 
The total absence of Umbelliferse in all these plots is curious, 
especially as the biennial and perennial plants, Rubus fruti- 
cosus and Digitalis purpurea appear in the last plot. Perhaps 
the Umbelliferge require the presence of shade. 
From the above lists of plants/ it follows that the first 
occupier of the ground in mass is Rumex Acetosella, and 
that it continues the struggle for two years with Holcus 
mollis and lanatus, which two species or varieties finally usurp 
the ground, destroying all competitors with the exception 
of a few single representatives chiefly of biennial plants. 
The absence of any species of Fumaria and Papaver so 
common, nay almost universal, in similar situations, appar- 
i 
