HAHDY PERENNIALS. 31 



In the Poppy tribe one plant, at least, deserves attention, the Argcmone yrandi- 

 flora, which, from its fine white flowers, and purple and blue stigmas, forms a 

 conspicuous object in the summer and autumn. 



The genus Viola contains a considerable number of North American species of 

 interest, such as pedata, lanceolata, and eriocarpa, and we are surprised that they 

 are not oftener seen among the dwarfer occupants of the border. 



Among Cruciferous plants, if we except the wall-flower and different varieties 

 of stocks, there are not many worth cultivation ; but the pretty calabrian Arabis 

 rosea, and A. verna deserve a place on account of their early flowers. 



The Dianthus tribe Caryophyllece, needs no recommendation, including, as it does, 

 some of our most esteemed florist flowers ; not a fiftieth part, however, of the plants 

 comprised in this order are in general cultivation, which is the more to be 

 regretted, as the whole of them are perfectly hardy, of dwarf habit, and abundant 

 flowerers. Such are the Dianthus Fischeri, latifolius, giganteus, libanotis, lusitanicus, 

 Balbisii, and Carthusianorum ; the Saponaria ocymoides, and glutinosa ; G-ypsophila 

 paniculata, perfoliata ; Silem imbriata, stellata, livida, and speciosa ; and Lychnis 

 fulgens, coronata, and Bungeana. 



The flax family is chiefly represented in our gardens by the old Linumflavum, 

 a very gay little evergreen plant, and quite hardy; but the genus contains at 

 least twenty other species equally deserving of notice, among which we may 

 mention the L. monoyynum, white; arboreum, maritimum, and campanulatum , 

 yellow ; suffruticosum, and tenuifolium, pink ; narbonense, austriacum, alpinum, mon- 

 tanum, and hirsutum, blue; and lastly, ascyrifolium with very handsome large 

 blue and white blossoms. 



A few of the hardy species of Geranium and Erodium are sufficiently showy 

 to be admitted into the mixed border ; of the first genus, anemonefolium, ibericum, 

 argenteum, and macrorhhwm, are the best ; and of the Erodiums, serotinum, hyme- 

 nodes, crassifolium and Reichardii. 



The Mallows-tribe includes some highly ornamental subjects. The Hibiscus, 

 roseus, and H. Mosclieutos, although commonly supposed to be only half-hardy, 

 will succeed in moist situations, and when in flower, nothing finer can be imagined 

 than these two plants. The North American genus Nuttallia is but little known, 

 although all the species are eminently worthy of cultivation, and easily procured; 

 the best are pedata, diyitata, papaver, and cerasiformis, all of which arc quite 

 hardy. 



(To he continued. -J 



