A HISTORY OF CORNWALL 



Plants occurring in Cornwall with a lower Watsonian comital num- 

 ber than ten are : Thalictrum majus, Mathiola incana, Polycarpon tetraphyl- 

 lum, Genista pilosa, Medicago falcata, Lotus angustissimus, L. bispidus, 

 Rubus nemoralis, R. leucandrus, R. ramosus, R. Bar teams, R. Barren, R. 

 oigoclados, R. botryeros (Lejeunei), R. thyrsiger, R. plintbostylus, Pyrus 

 rotundifolia, Eryngium campestre, Hypochceris maculata, Erica ciliaris, 

 Microcala Jiliformis, Gentiana baltica, Linaria supina, Sibtborpia europcea, 

 Orobanche ametbystea, 0. Picridis, Mentha pubescens, Melittis Melissophyllum, 

 Illecebrum verticillatum, Herniaria glabra, Polygonum maritimum, Hippophce 

 rbamnoides, Asparagus officinalis, Scilla autumnalis, Juncus tenuis, Arum 

 italicum, Cyperus longus, Scirpus carinatus, S. triqueter, Fibicbia umbellata, 

 Briza minor, Adiantum Capillus-Veneris, Char a canescens, Nitella gracilis. 



Until Devon has been more thoroughly worked, a comparison of the 

 floras of the two westernmost counties can only be approximately correct. 

 Although many good lists have been compiled since the publication of the 

 Botanist's Guide, nearly one hundred years ago, large tracts still need sys- 

 tematic attention. Investigations in Devon show that its more moun- 

 tainous character and its greater range of sylvan and moorland features 

 notwithstanding, its flora is not separated from that of Cornwall by 

 any sharp line of demarcation. Neither of the counties is rich in those 

 remnants of a northern flora to which H. C. Watson gave the name 

 ' Highland ' and Professor Edward Forbes ' Alpine,' while both have 

 their share of Watson's ' Atlantic ' and Forbes' ' Asturian ' and ' Ar- 

 morican ' types. The total number of plants reported for Cornwall 

 and for which records for Devon are still wanting is 129, but for a 

 satisfactory comparison of the two floras this number must be greatly 

 reduced. Taking no count of species printed in italics in the London 

 Catalogue, and excluding those which though natives of other parts of 

 Great Britain have found their way into Cornish lists on the strength 

 of a stray record or as recognized aliens or strays from cultivation, 

 Cornwall may claim sixty plants not yet known to occur" in the neigh- 

 bouring county. Some of these have been already mentioned when 

 dealing with plants restricted to Cornwall. Of the remainder the more 

 important are : Thalictrum Jiexuosum, T. majus, Silene cornea, Arenaria 

 verna var. Gerardi, Genista pilosa, Galium syhestre, Aster salignus, Filago 

 apiculata, F. spathulata, Hieracium rigidum, H. crocatum, Erica ciliaris^ 

 Gentiana baltica, Mentha pubescens, Herniaria ciliata, Atrip lex littoralis, 

 Euphorbia platypbyllos, Allium Schcenoprasum, A. sibiricum, Cyperus longus, 

 Eleocharis uniglumis, Cladium Jamaicense, Chara polyacantba, C. baltica 

 var. affinis. Among the 69 items by which Devon has Cornwall at a 

 disadvantage are : Myosurus minimus, Fumaria Vaillantii, Nasturtium am- 

 pbibium, Helianthemum Chamcecistus, H, polifolium, Dianthus deltoides, 

 Hypericum hirsutum, Hippocrepis comosa, Potentilla verna, Eupleurum tenuis- 

 simum, B. aristatum, Trinia glaberrima, Aster Linosyris, Artemisia maritima, 

 Litbospermum purpureo-caeruleum, Teucrium Scordium, Pinguicula vulgaris, 

 Utricularia intermedia, Hydrocharis Morsus-rance, Ma/axis paludosa, Orchis 

 ustulata, Listera cordata, Epipactis media, Ophrys muscifera, Sagittaria sagitti- 



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