4 USTBODUCTTON. 



Onobrychis sativa 

 Poterium sanguisorba 

 Pyrus Aria 

 Galium tricorne 



pusillum 



Viburnum Lantana 

 Conyza squarrosa 

 Helminthia echioides 

 Picris hieracioides 

 Lithospermum officinale 

 Gentiana amarella 



Chlora perfoliata 

 Bartsia odontites 

 Linaria minor 

 Origanum vulgare 

 Juniperus communis 

 Orchis pyramidalis 

 Ophrys apifera 



muscifera 



Avena pubescens 

 Sesleria cserulea 

 Carex digitata. 



Woods on a calcareous soil are, therefore, very- 

 favourable habitats for numerous plants, and almost 

 sure to repay the toil of a careful search ; while on 

 a cold clay vegetables having but a slight affinity 

 for alumina, very few of any interest would be met 

 with. How beautiful, beneath the hedges of a lime- 

 stone height, shines at noon the golden stars of the 

 glaucous-foliaged yellow-wort ; while in groves on 

 such a sub-stratum the beautiful Wood-vetch (Vicia 

 sylvatica) delights to twine its azure-lined flowers 

 among the trees. In such localities as at Whitecliff 

 Woods, near Ludlow, on Silurian strata, the purple 

 lEpipactis latifolia stands in tall luxuriant ranks ; 

 while, even in winter's denuded reign, the plumy seeds 

 of Clematis vitalba wreathed fantastically on high 

 among dark branches, seems like down fallen from 

 the skies, or a supernatural hoar frost, and points out 

 the abandoned limestone quarry from afar. But, 

 although so many plants thus delight in a calcareous 

 soil, they do not absolutely distinguish the geological 

 system on which they grow, most of those I have 

 enumerated occurring as well on the lias as the Silu- 

 rian limestone ; though perhaps the CeteracJi fern, 

 and the lichen Bquamaria crassa, rather prefer the 



