WALL PLANTS 



89 



Ac ana microphylla, Achillea umbellata, A. tomentosa, 

 Alyssum, Androsace, Antirrhinum. Besides the common 

 Snapdragon, A. majus, two trailing species with white 

 flowers and greyish foliage, A. Asarina and A. glutinosa 

 are excellent wall plants. Aquilegia. Seed of the better 

 species of Columbine often germinates well and produces 

 good plants. Arabis, Armeria, Arnebia echioides. This 

 last, known as the Prophet Flower, will succeed in a 

 wall. It has yellow flowers whose petals on opening 

 are marked with a deep maroon spot which fades later. 

 Artemisia, Aster alpinus, Aubrietia, Campanula pyramidalis, 

 and the other dwarf species already alluded to, 

 Cardamine trifolia, Centranthus ruber, Cerastium, Con- 

 volvulus mauritanicus, a beautiful summer-flowering 

 trailer with lilac-blue blossoms, Corydalis, Dianthus, 

 species and hybrids, Dryas, Echeveria, Erigeron mucro- 

 natus Erinus. Geraniums of the dwarfer species such as 

 G. argenteum, G. cinereum, G. Endressi, and G. ibericum, 

 Gypsophila repens, Haberlea rhodopensis, a pretty little 

 plant bearing lilac-blue flowers which should be grown 

 on the north side of a wall, Helianthemum, Hutchinsia, 

 Hypericum calycinum, H. coris and H. repens, Iberis, 

 lonopsidium acaule, a charming little annual bearing pale 

 violet flowers and growing about two inches in height, 

 Linaria, Lithospermum purpureo-caruleum, L. prostratum 

 and L. graminifolium, Lysimachia nummulifolia, Meconopsis 

 cambrica, the yellow Welsh Poppy, Mesembryanthemums 

 in warm localities near the sea-shore, Morisia hypogaa, 

 Onosma tauricum, a plant bearing long bell-shaped 

 flowers of a bright yellow colour, very ornamental, 

 Pentstemon Scouleri, a very attractive spring flower er, also 

 doing well on banks and in rocky ground, which bears 

 large purple-blue flowers, dwarf Phlox, Ramondia 

 pyrenaica, 2. plant producing blossoms, an inch and a half 

 in diameter, of a mauve-blue tint with orange centres, 

 best suited like the Haberlea by a shady position, 



