230 ALPINE FLOWERS AND ROCK GARDENS. 



flowers of large size, the leaves free from mottling. 

 Hartwegi is a very early bloomer, flowers yellow. 

 Revolutum is a Californian species with pink flowers, and 

 has a charming variety called Bolanderi, which has 

 white flowers. Johnsoni, classed by some authorities 

 as a variety of revolutum^ has pink flowers, and is 

 extremely pretty. Giganteum is often confused with 

 grandifloruniy but it has mottled leaves, while those 

 of the latter are plain green. Both have yellow 

 flowers. Giganteum is one of the tallest and has the 

 merit of blooming freely. 



FRITILLARIA (Snake's-head Lily).— The most 

 familiar of the Fritillarias is the " Crown Imperial,'* a 

 noble plant, but unsuitable for the rockery, on account 

 of its large, spreading habit. Meleagris is also well 

 known. It has curiously chequered flowers, and is a 

 quaint, though not showy, plant. It grows about a 

 foot high, and could be put on the rockery, but many 

 flower-lovers will prefer to give the space to more 

 interesting kinds, such as armena, with purple flowers, 

 and its yellow variety, both quite dwarf, flowering in 

 April ; aurea, with yellow flowers in May ; tubaeformis, 

 a June bloomer with purple and yellow flowers, and its 

 varieties Burneti, purple and yellow, and Moggridgei, 

 brown and yellow ; and recurva, scarlet and yellow. 

 All of these are beautiful Snake's-heads. The common 

 Fritillary grows wild in moist places, but all of those 

 named will thrive on friable soil in the rock garden. 

 They may be increased by offsets, removed while the 

 plants are at rest, or raised from seed sown under glass 

 in spring. 



