344 CATALOGUE OF HARDY SEMPERVIVUMS. 
instance, the plant widely a in Laney? as Semperviwum califor- 
nicum (which isan absurd nam e to.a species of a genus entirely 
confined to the Old World) is whet. 5c ~~ fully described long ago, 
and has more recently admira ly fi under the name of Semper- 
vivum caleareum, and of course these published names get 
maltreated and man fe on garden “ ere give one instance only, 
empervivum arvernense (which means growing in Auvergne) gets 
erv 
continually changed in the label-writer’ s hands into Sempervivum 
arvense (which n means growing in cornfields). At any rate, my cata- 
logue may help in remedying this evil. 
The principal special papers on Sempervivum, where 
able number of forms are fully described or figured, are the follow 
ing:—1. A monograph of all the known species by Lehmann am 
Schnittspahn in the Regensburg Flora for 1855, grit p. 1; 
followed in the volume for 1856, at p. 58, by a list of thirty-six 
ies. is is an excellent. paper ; but unfortunately there 
are no figures, and it fe ; but this would be the 
— to build upon for a graph brought up Hs the present 
ate. 2. A series of isolated dsackiptions by Schott, in Gisterreichisches 
Botan Wochenblatt, beginning with 1853 and extending over 
t ur le genre Sempervivum, otte, an 8v0 
pamphlet of 57 pages, published at Clermont-Ferrand, 1864. 4 
Descriptions in the secon of Jordan and Fourreau’s Brevi 
arium, 
date 1868, pp. 283—46, of t thirty-five species, so called, most of which 
are admirably figured life-size in the Jcones ad Floram Europe of the 
same authors, figs. 198—218. 5. Ac sill eartioni classified summary 
of the garden forms in Regel’s Gartenflora, 1872, pp. 233—238. Copies 
of all these are accessible in London, and have been used in drawing 
up the following catalogue. 
Genus Sempervivum, Linn. 
Sus-cenus 1. Sempervivum proper: petals and sepals each ten to 
twelve, tai te ; carpels t the same number, narrowed sud- 
denly into short stellately divergent styles. 
Division 1,—True Sempervivums with red flowers. 
1. Grovr or S. recronvm, Leaves glabrous on the surfaces, bo bord 
by a regular fringe of hairs not more than }—# line long. 
dt a -—Leaves large, obovate-spathulate, red-tipped, ¢ inch 
TO 
1. S. tectorum, Zinn., as figured Eng. Bot., t. 1320; Cu 
Lond., t. 105; Baxter, Brit. Bot. t. 401. (From this the plan 
called in gardens calcaratum, Royeni, rusticanum, and Ragn 
differ very slightly.) 
