SEJIPERVIA'UM 



SEi[PEEA'IVUM 



1655 



1S78. Baker's scheme lui^ lieeu clti^ely fdlowed below, 

 but some vt ihv names have heeu ehanu'ed. 



SrB<";Exrs I. SE^l^E^v^■[v^M pRr^PKi-;. Fh>r<rJ j>nrls in 



Division I. Bhoaautliif . FIs. rcddlsJi. 

 Group I. Ciliata. Lrs. of tin/ horrti' y<>s<if. .< <ilalrrnn$ 

 '•'u the fo,_-ts irh<-H oi-ifiir>.. sjnuihi ri/i,,i,.d on the 

 edije^ 0>l hi . 



A. JRed-hroioi tip of lrs. Ci'iisp/cous. 

 B. Foliui/e (jr.tn ",■ slii/JttJii -jhiu- 



cous 1. tectorum 



iiB. FoJiar/e venj •il'Anc''>}is J. calcareum 



AA. Ftd-bnxni tip of Ics. ii'->tu-' ■'>■ <d>- 



B. F-.f"'s hriiihf )■> d ?>. glaucum 



BB. F'J.'ils pair rtd ■!. Atlanticum 



Group -2. Puhesreutia. Lvs. of tJ,r hnrren sTioots de- 

 cidedly pubescent o)> the foe s OS if. t] as riliiifrd ot the 

 tdges, not tipped n-ith a tuft of spri.odi wj lioirs. 

 A. He igh t 6 i)i.: fls. )i}f)i>crou-<. tin 



lowest subscssilt ."., montanum 



AA. fftight S~4 i)i.: fls. feu:. 4-S, oil 

 sessile or subsessHe. 

 B. Barren rosettes l-F-2 in. acro.ss: 



fls. bright red C. flagelliforme 



BB. Borren rosettes 1 in. arj-n.<:s ot 



iuost: fls. mo live -pur phi 7. pumilum 



Gr>->up 3. Ba rhu la fa . Zvs . o f fh >^ ho rrrn rosettes 

 strongly ciliated on. thf edg<^. mid f'lmislivd ivitli a 

 tuft of similar, not fleecy hairs ot the cusp. {2S^one 

 in our trade. J 



Group 4. A rn ch no idt a . Diffe ring 

 from the othe)- groups in having fJii:' 

 tips of the in.}ie}- h-.v, of the barren 

 rosette connected by fine fleecy threads 

 like those of a spider's irvh S. arachnoideum 



Division 2. Chrysantho.. Fls. yelloir. 

 A. Fls. less than 1 in. across: height 



6-12 in 9. Ruthenicum 



AX. Fls. F-^-F. in. across: height 



0-4 in 10. grandiflorum 



&L"BGEyrs II. Diopoaox. Floral parts in 6's. Co- 

 rolla p--rnia nently bell-shaped . ivitli ascending close 

 petals. 



A. Petals not fimbriated : young ro- 

 settes not peduncled 11. Heuffelii 



AA. Petals fimbriated: you-iuj rosettes 

 temporarily a tta ch ed fa flic 

 mother plant by a slender stalk. 



B. Lvs. obovate-cuneate 12. globifemm 



BB. Frs. obla-nceolate i;i. arenarium 



1. tectorum, Linn. Houseleek. Old-^Iax-and-Wo- 

 iiAN. Fig. 2::il0. Heiglit 1 ft. : rosette.^ 0-4 in. a-jross: lvs. 

 obovate-cuneate, cuspidate, 1^2-2 or finally .-; in. lona:. 

 pale green, with a distinct red-brown tip an eighth tu a 

 sixth of an inch long: panicle 5-G iu. long, o— i in. wide, 

 composed of 10-12 scorpioid branches : Ms. rU-l in. 

 across; petals pale red. keeled with deeper red; sta- 

 mens often changed to pistils; tih^ments bri^^dit purple. 

 Eu., Orient. — Var. expansum. Hort.. is said to have 

 broader lvs. and more open rosettes. 



2. calcareum, . lord. (S. Califdrnicuo' . Hort.). Height 

 under 1 ft.: barren rosettes 2 in. aero-s: lvs. ol.tlanceo- 

 h-tte-cuneate, very glaucous, "with a distinct red-l.irijwn 

 tip. I-P4 in. long: panicle 3-4 in. long and broad, with 

 8-12 scorpioid branches: fls. :''4 iu. across; petals pale 

 red, greenish down the keel both on the back and face. 

 Calcareous Alps of Dauphiny. 



r-1. glaucum, Truore. Heiglit G-9in.: barren rosettes 

 2-1 iu. aer^iss: lvs. oblanceulate-cuneate, less glaucous 

 than iS\ •■,ilr<, r> uiH , with only a very faint red-brown 

 spot at the ti[i: j)ain'dcs 2-.". in. across: tls. 1 in. across; 

 petals bright rod. SimplMU Alps. 



4. Atlanticum, Baker. Height nearly 1 ft. : barren ro- 

 settes 2-3 in. across: lvs. oblanceolate-cuneate, pale 

 green, hardly tipped red-brown: panicle .■?.-4 in. across: 

 tls. 1 JTi. amiss; petals pale red. Atlas i\Its. B.:M. OO.oo 

 las ,S-. f<rfnrinn. v;ir, A f la ut im >j> ] .-The lvs. of the 

 rii'wcrin-- stem are bri^-htlv I'ubu-ed with n^l, excepting 

 towards the liasi^ 



2311. Spider\%eb Houseleek— Sempervivum arachnoideum. 



5. montanum, Linn. Height 6 in.: l:)arren rosettes 

 Po-2 in. across, the new ones few, and borne on red 

 pilose peduncles 1-1^2 in. long: lvs. GO-SO iu a rosette: 

 panicle very dense, 1^0-2 in. across, the lowest fls. 

 nearly sessile: lis. 1-1^4 in. across, bri.icht mauve-red. 

 Fls. about the end of June. Alps. Pyrenees. 



G. flagellif6rme, Fisch. Height 3-4 in.: barren ro- 

 settes l-lyii in. across, the new ones long-peduncled: 

 lvs. 40-50 in a rosette: fls. 5-8 in a dense head, all ses- 

 sile or nearly so, 1 in. across or more ; petals bright 

 red. Fls. early iu June, before any other species. IVa- 

 tive country uncertain. 



7. pumilum, Bieb. iS. anomalum , Hort.). Height .'^i- 

 4 in. : barren rosettes at most 1 in. across, the new ones 

 numerous and short-peduncled : fls. 4-8, in a dense 

 head, all sessile or subsessile, 1 in. across ; petals 

 brii^'ht maure-purple. Fls. in middle of June. Cauca- 

 sus. 



S. arachnoideum, Linn. Cobweb or Spider - web 

 Houseleek. Fig. 2311. Height 3-5 in. : barren rosettes 

 ^-j-:''4 iu. aci'oss, the new ones crowded and sessile: lvs. 

 oldong-cuneate. pale green, the tips of nearly all con- 

 nected by long, soft, white hairs: panicle dense, few- 

 lid. : lis. less than 1 iu. across; petals bright red. Py- 

 renees to Tyrol. B.H. G8.-.S. toinenfosinn .'C. B. Lehm"., 

 said til differ in haviip::^ slnirter, more nbiivate-cuneate 

 lvs. and flatter and more compact rosettes and a denser 

 v-eli. could not be distinguished bv J. C. Baker. R.H. 

 1800, pp. 490. 491; 1S9S, p. 573. 



9. Ruthenicum, Koch. Height 6-12 in.: barren ro- 

 settes l"^o in. across, new ones few: lvs. 40-5).i in a ro- 

 sette, slightly pubescent glandular on the faces: lis. 

 ]:iale yellow, less than 1 in. across. Eastern Eu.— Rare 

 in cult. 



10. grandiflorum, Haworth. The yellow petals are 

 set off by the red-purple flhunents : heiglit 3—4 in. : bar- 



