15 
Type of Distribution. 
Number of Species. 
Per Centage. 
1 Universal 
567 
57— 
2 Austral 
317 
31 + 
3 Boreal 
91 
9 + 
4 Local 
26 
3— 
1001 
100 
Three species, all of which are comparatively recent discoveries in 
Britain, are only known in this country within the limits of Yorkshire, 
viz ; — 
Polygala uliginosa 
Salix acutifolia 
Carex paradoxa. 
There are strong reasons for believing a fourth species to be truly 
native in Yorkshire, which is not known, except as a naturalized plant, 
elsewhere in Britain, viz. ; — 
Saxifraga umbrosa. 
Three of the local species are not known to grow in any of the eastern 
counties, either to the north or south of Yorkshire, viz. ; — 
Actaea spicata , 
Asarum europoeum 
Lastrea rigida. 
Eighty species are not known with certainty to grow in any of the 
eastern counties northward of Yorkshire ; that is to say, they are supposed 
to find their boreal limit in the county, viz ; — 
Clematis Yitalba 
Anemone Pulsatilla 
Meconopsis cambrica 
Hutcbinsia petrsea 
Lepidium latifolium 
Draba muralis 
Cardamine impatiens 
Barbarea stricta 
Brassica oleracea 
Helianthemum canum 
Drosera intermedia 
Arenaria tenuifolia 
Cerastium aquaticum 
Hypericum elodes 
Erodium moschatum 
Medicago maculata 
denticulata 
Trifolium subterraneum 
Hippocrepis comosa 
Yicia bithynica 
Lathyrus palustris 
Bosa micrantha 
Pyrns communis 
Epilobium roseum 
Cotyledon Umbilicus 
Petroselinu m segetum 
Peucedanum palustre 
Torilis infesta 
Viscum album 
Viburnum Lantana 
Asperula Cynanchica 
Fedia carinata 
Dipsacus pilosus 
Tragopogon porrifolius 
