234 



SEMPERVIVUM. 



S.) A neat kind growing in firm 

 dense sheets. Flowers, in summer ; 

 pale yellow, in a dense corymb, on 

 stems 6 to 8 in. high. Leaves, in 

 spreading rosettes, smooth, fringed, 

 pointed, inflected about the centre, 

 with numerous stolons growing from 

 the axils, terminated by young rosettes 

 which detach themselves after a time. 

 In autumn the outside leaves of the 

 rosettes assume a reddish tinge. Euro- 

 pean Alps. The rock-garden and 



the margins of borders fully exposed to 

 the sun, in ordinary soil Division. 



Sempervivum heterotrichum (Hair- 

 tipped S.) An interesting kind. 

 flowers, in summer ; rose-coloured, on 

 stems, 24 to 34 in. high. Leaves, in 

 small and very closely-set rosettes, 

 and of various forms and colours, 

 furnished at the end with white cob- 

 web-like hairs. Tyrolese Alps. The 



rock-garden, in sandy soil. Division. 



Sempervivum Heuffeli (HeuffeVs 

 Houseleek]. Easily known by its 

 deep-chocolate hue. Flowers, in sum- 

 mer ; yellow, nearly bell-shaped, in a 

 spreading corymb on stems 8 to 10 in. 

 high. Leaves, in irregular rosettes, 

 not round, long, smooth, fringed only 

 at the end which preserves, even in 

 summer, a deep red tint, especially on 



the fringed portion. Hungary. 



The dark hue of this species makes it 

 attractive for edgings, panels, etc., 

 while it is also more valuable than 

 most of the species for the rock- 

 garden or borders. Ordinary sandy 

 soil. Division. 



Sempervivum hirtum (Hairy House- 

 leek}. Distinguished by its fringed 

 leaves and flowers. Flowers, in sum- 

 mer ; yellowish, almost campanulate, 

 forming a dense corymb, on stems 6 

 to 8 in. high ; petals erect and narrow- 

 lance - shaped, almost obtuse, with 

 a long fringe on their margin. Leaves, 

 in spreading rosettes, oblong-lanceo- 

 late, acute, strongly fringed. Alps of 



Provence. Borders and the rock- 

 garden, in ordinary soil and in fully 

 exposed positions. Division. 



Sempervivum Laggeri (Lagger's 

 Houseleek}. Larger than the Cobweb 

 Houseleek and whiter from its 'more 

 abundant silvery cobweb-like down. 

 Flowers, in summer ; dark rose-coloured. 

 Leaves, velvety - glandular, covered 

 with cobweb-like down exceedingly 

 abundant and cottony. European 



Alps. Being very silvery, this is 



one of the best for the rock-garden, 

 in firm sandy loam and in sunny 

 positions. Division. 



Sempervivum Metteniannm ( M'etten's 

 Houseleek). A species which flowers 

 many times. Flowers, in summer ; 

 rosy- white, on stems 4 j to 6 in. high. 

 Leaves, in medium - sized rosettes, 

 fringed, pointed, assuming in autumn 

 a reddish tinge, which is deeper on 



the upper side. European Alps. 



The rock-garden or borders, in sandy 

 loam. Division. 



Sempervivum montanum (Mountain 

 Houseleek). A dark green kind much 

 smaller than the Common Houseleek, 

 with an almost geometrical arrange- 

 ment of leaves. Flowers, in summer; 

 dull red, on stems 3^ to 6 in. high; petals 

 1014, lance-shaped, taper-pointed, 

 3 times longer than the calyx ; scales 

 square, nearly entire. Leaves, forming 

 neat rosettes, obovate or oblong, en- 

 tire, shortly pointed, pubescent and 

 glandular on both surfaces, ciliated ; 

 offsets rather contracted. European 



Alps. Borders and the rougher 



parts of the rock-garden, in ordinary 

 soil. Division. 



Sempervivum piliferum (Hairy-tufted 

 Houseleek). Distinguished by the 

 hairy appendage to its leaves. Flowers, 

 in summer ; rose-colour, in panicled 

 cymes, on stems 4 to 6 in. high. 

 Leaves, in medium - sized rosettes, 

 smooth, glaucous, very slightly 

 fringed on the edges, but terminated 



