Yorkshire Naturalists at Burnsall. 273. 
FLOWERING PLANTS.—Mr. Wattam writes :—Trollers Ghyll 
proved an excellent working ground for the Botanists. In the 
meadows at the entrance to the ghyll was noted a fine array of 
Orchis mascula, and an abundance of Ophioglossum vulgatum. 
The ledges of the limestone scars were inhabited by such char- 
acteristic plants as Thalictrum minus L. var. montanum Wallr..,. 
Arabis hirsuta, Galium sylvestre, Geranium lucidum, Poterium 
sanguisorba, Saxifraga hypnoides, Sax. tridactylites, Sedum 
acre, Lactuca muralis and Scabiosa columbaria. Geranium 
Robertianum and Festuca ovina were common plants of the 
basal. screes. Watercress, water avens, brooklime, and 
Equisetum palustre were common plants of the streamside, 
and the following sedges were noted in the moist situations :— 
Carex Goodenown, C. glauca, C. pilulifera, C. precox, and C. 
panicea. Within the narrow gorge Draba incana and Hieracium 
murorum were observed, whilst Myosotis sylvatica made a 
pretty picture. The shale areas were controlled by Mer- 
curialis perennis and Arum maculatum. Noticeable features. 
were many fine examples of Yew, Ash, and Mountain Ash 
which had established themselves within crevices of the scars. 
Ferns were. also prominent, of the species Asplenium Ruta- 
muraria, A. viride, A. Trichomanes, Cystopteris fragilis (with 
prothalli in situ), Polypodium vulgare, and P. Phegopteris. 
The refuse of the old lead workings was whitened with the 
blossoms of Avenaria verna, a double form being found by Mr. 
Gough, and here also occurred Linum catharticum, Thymus 
serpyllum, and Hieracium pilosella. 
On reaching the head of the ghyll the limestone area, with 
its typical scar and scree flora, gave place to siliceous rocks and 
soils, and the vegetation consisted of dwarf bilberry, gradually 
passing into an Eriophorum moor with Molinia cerulea as a 
co-dominant species. Sphagnum was abundant over the 
moor, and other common associates were Calluna, Erica 
tetralix, Juncus squarrosus, Scirpus cespitosus and Deschampsia 
flexuosa. This sharp transition was the more pronounced on 
looking backwards and noticing on the farther side of Trollers 
Ghyll the wide stretch of calcareous pasture with its typical 
grasses, Festuca ovina and Sesleria cerulea. On the moor 
where paring had been done it was noticed that Calluna was 
reasserting ilself. 
Hartlington Valley, through which courses the river Dibb, 
had a rich flora. A prominent picture was a group of spikes of 
the Butterbur in fruit, nearly a yard in height. Antennaria 
dioica, the blue, white, and deep pink flowered forms of Milk- 
wort, Aiva precox, and Scolopendrium vulgare were noted. 
The bog areas displayed a glorious wealth of Primula farinosa, 
Pedicularis palustris, Pinguicula vulgaris, and Eguisetum 
maximum. Within the wood by the river side Geranium 
—— eS SS 
1913 July tf. 
