224 OUR ROCK-GARDEN 



the Hieracium latifolium peregrinum phlomoides 

 of one old herbalist, the Hieracium hortense floribus 

 atropurpur ascentibus of another. 



We have in England a goodly number of hawk- 

 weeds, most of which may well find a corner in our 

 rock-garden, varying as the flowers do in colour 

 from deep orange to pale lemon -yellow. On 

 Plate XLVII. we have an illustration of one of 

 the still more numerous hawkweeds of Switzerland, 

 the Hieracium intybaceum. Its companion plant is 

 the dame's violet, the Hesperis matronalis. The 

 popular title is wholly a misnomer ; the flower has 

 nothing violaceous about it, but stands revealed a 

 most obvious crucifer. It may be found in hilly 

 pastures in several localities in Britain, but is 

 probably almost always as an escape from cultiva- 

 tion. It is flowering during May, June, and July, 

 and forms in the rock-garden a rather diffuse mass, 

 spreading freely, but of no great height. The 

 flowers, often lilac, as our illustration shows, are 

 sometimes white, with more or less of the lilac 

 streaking them in erratic apple-blossom fashion. 



The two Claytonias find a place in our regard. 

 They are both North American species. The 

 Claytonia perfoliata, figured on the right-hand side 

 of Plate XXVIII., is a particularly inconspicuous 

 plant, but quaint withal. It derives its generic 

 name from one Clayton, an American botanist, 

 while its specific name bears witness to the per- 



