212 



PB ACTIO AL GUIDE TO GARDEN PLANTS 



DEABA 



cushions for the rock garden, and is a 

 valuable early-flowering alpine plant. 



D. Aizoon (D. ciKwris). — A somewhat 

 vigorous species, 3 in. high, from the 

 mountains of W. Europe. Leaves 

 linear, acute, keeled, hairy - edged. 

 Flowers in April, bright yellow, on naked 

 hairy scapes. It ripens seed freely. 



Culture dc. as above. Increased by 

 seeds and division. 



D. alpina. — A native of N. Europe, 3 

 inches high, with flat lance-shaped hairy 

 leaves, and naked downy scapes of golden- 

 yellow flowers produced in April. 



Culture d-c. as above. Increased by 

 seeds and division. 



D. aurea. — A biennial species from 

 Greenland, about 6 in. high, with some- 

 what branched velvety stems, and oblong- 

 linear, acute, entire, downy leaves. 

 Flowers in May, with obovate, blunt, 

 clawed petals. 



Culture do. as above. Increased by 

 seeds. 



D. bruniaefolia. — A loosely tufted plant, 

 about 4 in. high, from the Caucasus. 

 Leaves linear, somewhat keeled, acute, 

 in loose rosettes. Flowers in June, 

 yellow, on naked downy scapes. 



Culture dc. as above. Increased by 

 seeds and division. 



D. ciliata. — A fine white-flowered 

 species 2 in. high, from Croatia and 

 Carniola, and very much like a miniature 

 plant of Arahis albida. Leaves rather 

 leathery, smooth, with a cartilaginous 

 margin slightly toothed and fringed with 

 stiff hairs. Flowers in early summer, 

 white, few, closely set. 



Culture dc. as above. Increased by 

 seed and division. 



D. cinerea. — A Siberian biennial 3-6 

 in. high, with somewhat downy stems. 

 Leaves oblong-linear, entire, scattered. 

 Flowers in early spring, white. 



Culture dc. as above. Increased by 



D. cuspidata. — A native of Tauria, 3 

 in. high, nearly related to D. Ainoon, and 

 probably only a form of it. Leaves 

 in dense rosettes, linear, acute, keeled, 

 hairy-edged. Flowers m spring, yellow, 

 in terminal racemes ; scapes naked, 

 hairy. 



Culture dc. a? above. Increased by 

 seed and division, 



D. glacialis. — This is a native of 

 Siberia and the granitic Alps of Switzer- 

 land, about 2 in. high and like a small 

 form of D. cdzoides. Leaves linear and 

 lance-shaped, entire, with stellate hairs. 

 Flowers in May, bright golden-yellow ; 

 scapes naked, with a starry down. 



Culture dc. as above. Increased by 

 seeds and division. 



D. lapponica. — A native of the Lapland 

 Alps, 2-3 in. high, with lance-shaped, 

 entire, rather hairy leaves. Flowers in 

 May, white ; scapes naked, very smooth. 



Culture dc. as above. Increased by 

 seeds and division. 



D. Mavsri. — A lovely rook plant with 

 masses of bright green densely tufted 

 fohage. It is a native of Spain. Leaves 

 linear-oblong, blunt, shiny, margin 

 pectinate, with stiffish incurved or 

 spreading bristles. Flowers in spring, 

 white, J in. across ; sepals deeply con- 

 cave, bristled behind, green tipped with 

 red-brown. 



Cultv/re dc. as above. Increased by 

 seeds and division. 



D. nivalis. — A native of Arctic Europe 

 1-2 in. high, more compact in habit than 

 -D. lapponica. Leaves linear-oblong, 

 rather hairy, with fringed edges. Flowers 

 in April, white ; scape naked or one- 

 leaved, smooth. 



Culture dc. as above. Increased by 

 seeds and division. 



D. pyrenaica [Petrocallis pyrenaica). 

 A beautiful Alpine 2-3 in. high, native of 

 the mountains of S. Europe. Leaves 

 wedge-shaped, palmately 3-lobed ; stems 

 shrubby at the base dividing into many 

 small branches. Flowers in April and 

 May, at first white, pale lUac-purple, 

 then faintly veined, sweet-scented, borne 

 in short few-flowered racemes. 



Culture dc. as above. Increased by 

 seeds and division. 



D. rupestris. — A compact-growing 

 species 2-3 in. high, native of Norway, 

 Scotland, and North America. Leaves 

 crowded, lance-shaped, almost entire, 

 hairy. Flowers in summer, white, few, 

 small, on almost leafless stems. 



Culture dc. as above. Increased by 

 seeds and division. 



D. Sauteri.— A Swiss plant 4 in. high, 

 with stiff spoon-shaped leaves, fringed 



