1 88 Saxifrages Rides. 



double flowers. Malvaceum and superbum are amongst the 

 best. R. Gordonianum, having red flowers tinged with yellow, 

 is a hybrid between this and the following species, partaking 

 of the characters of both, but less desirable than either of the 

 parent species. 



2. R. aureum. Leaves glabrous, shining, irregularly 

 lobed. Flowers yellow, the small petals bordered with red. 

 The habit of this is more spreading than in the preceding. It 

 is also a native of North America. 



V."''- Spiny Species. 



3. R. specioaum, syn. R, fuchsioldes. This is an extremely 

 handsome shrub with small irregularly toothed and lobed 

 oblong leaves and crimson flowers remarkable for the long ex- 

 serted stamens, resembling in this respect some of the Fuchsias. 

 The whole plant is more or less spiny and glandular-hispid. 

 A native of California, flowering in Spring. 



4. R. niveum* Similar in habit and foliage to the last, but 

 with smaller white axillary flowers having exserted though less 

 conspicuous stamens. It is also from the same regions. 



ORDER XL. CRASSULACEJE. 



Usually fleshy herbs with alternate or opposite leaves, often 

 crowded at the extremities of the branches in rosettes ; stipules 

 none. Flowers regular, cymose. Sepals free, persistent, 3 to 

 5, rarely more ; petals of the same number, free or connate. 

 Stamens perigynous, or almost hypogynous, as many or twice 

 as many as the petals. Carpels 3 to 5, seldom more, free, 

 many-seeded ; seed small, albuminous. About 400 species, in 

 1 4 genera, chiefly from temperate and warm countries, rare in 

 Australasia. Most of the members of this family are only 

 suitable for rock-work or in very dry soil, but a few species are 

 familiar, and some have lately been introduced into the geo- 

 metrical flower-garden to contrast with its highly coloured 

 occupants. Echeveria metallica is one of the most conspicuous 

 of this class. 



1. CRASSULA. 



Dwarf herbs, rarely frutescent. Petals 5, free, or connate at 

 the base only. Stamens and carpels of the same number. 

 Leaves sessile, opposite, usually more or less fleshy, entire, 



