Vll. 
short green herbage, the gift of the limestone rocks. Even to the very 
summit of Mickle Fell, Cam Fell, and other high points, the limestone 
retains this superiority of character, and may thus be traced to the brows 
of Wharnside and Pennigent, across the thick heath which envelopes 
the gritstone. 
The hue and quality of the herbage on the peaty tracts vary ; some 
of the Hougill Fells have the bluish green sedgy herbage ; others are 
heathy. 
The district is only partially wooded ; it is chiefly in the lower parts 
of the valleys, where millstone grit is divided by the rivers, at elevations 
less than 600 feet above the sea, that any thing like forests appear ; at 
elevations exceeding 1 ,000 feet, the mountains and valleys are generally 
bare of trees. 
DISTRIBUTION OF PARTICULAR PLANTS. 
The following plants, which occur in the north-western district, 
have been found in no other part of Yorkshire. 
TLalictrum alpinum 
Draba incana 
muralis 
Hutcbinsia petraea 
Thlaspi alpestre 
Barbarea precox 
Cistus Marifolius 
Silene maritima 
Arenaria verna 
Sedum villosum 
Rbodiola rosea 
Saxifraga birculus 
■ oppositifolia 
■ hypnoides 
azoides 
Hippocrepis comosa 
Seuecio saracenicus 
Hieraciam macalatum 
Lawsoni 
Hypochaeris maculata 
Polemoniam cseruleum 
Mentha agrestis 
Daphne Mezerinm 
Asarum EnropEeum 
Jnniperus communis 
Convallaria polygonatum 
Epipactis rubra 
Tofieldia palustris 
Juncus polycephalus 
Dianthus caryophyllus 
Potentilla fruticosa 
alpestris 
Dryas octopetala 
Rosa dumetorum 
Ribes petraeum 
Epilobium alsinifolium 
Galium pusillum 
boreale 
Vaccinium uliginosum 
Symphytum tuberosum 
Arbutus Uva Ursi 
Gentiana verna 
Bartsia alpina 
Teucrium scordium 
Mentha rotundifolia 
acutifolia 
gentilis 
Polygonum viviparum 
Kobresia caricina 
Carex strigosa 
capillaris 
distans 
Sesleria caerulea 
Poa nemoralis 
Festuca Myurus 
