SAXIFRAGES 297 



and usually more or less spotted with pink. It is a 

 true rock plant and, though easy to grow in any open, 

 well-drained place, looks its best only among the 

 rocks. It likes the sun, but not extremes of drought 

 and heat. It thrives best in a light, fairly rich soil, 

 with plenty of lime in it, and when it is planted on a 

 steep bank so that its roots can run under the rocks. 

 It will do well on the north side of an open rockery, 

 but grows leggy and blossoms poorly in shade. These 

 remarks apply to nearly all the saxifrages of this sec- 

 tion and to many others. There are few that like 

 either drought or complete shade; and very many 

 need lime if they are to flower profusely. 



It would be impossible even to mention all the 

 varieties of S. Aizoon. There is a pretty yellow variety 

 and a beautiful pink one, still new in commerce. There 

 is a very small variety called minima. There is crus- 

 tata, a name given to many different varieties. There 

 is elongata, and so on. S. lingulata is usually con- 

 sidered a species. It has large white flowers, varies 

 much from seed, and has hybridized with S. Aizoon. 

 S. Lantoscana is a variety of it; and sometimes one 

 sees very splendid forms called Lantoscana superba, 

 but nurserymen are apt to call any variety of lingu- 

 lata by this name. The two finest species of this 

 section are S. cotyledon and S. longifolia. Both have 

 very large rosettes and sprays of flowers often a couple 

 of feet high. S. cotyledon will grow in any sunny 

 place not too hot. The flowers of the true species 

 are, we believe, unspotted; but there are spotted 



