ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 23 
Flowers hermaphrodite, 5-parted, bright yellow. Hardy East Asiatic 
* plants. (P. 107.) 
Section VI. Mexicana Praeger. — Perennial. Rootstock thicken- 
ing horizontally, or contracted. Stems tufted, erect (at least at first), 
usually biennial, dying to the root after flowering, the succeeding set 
when annual usually arising when the previous set is flowering, so 
that the plants are evergreen. Flowers hermaphrodite, 5-parted, 
mostly white, rarely red or yellow. Tender Mexican plants. (P. 127.) 
^ Section VII. Seda Genuina Koch. — Perennial. Stems perennial, 
creeping, or erect and sub-shrubby, bearing barren and annual flowering 
shoots. Flowers hermaphrodite, usually 5- (rarely 4- to 9-) parted. 
Hardy or tender. (P. 144.) 
Section VHI. Sempervivoides Boissier. — Annual or biennial. 
Leaves flat, root-leaves forming a rosette. Inflorescence corymbose 
or racemose-paniculate. Hardy or tender Eurasian plants. (P. 279.) 
Section IX. Epeteium Boissier. — Annual, rarely biennial. Leaves 
semi-terete or cylindrical (rarely flat), not rosulate. Inflorescence 
cymose 2- or many-branched, or corymbose. Hardy or tender. (P. 293.) 
The present paper purports to deal only with those species of 
Sedum which are known in cultivation at the present time. The 
majority of these species, and almost all the better-known ones, are 
hardy in the British Isles, and are plants of the rock-garden, more 
rarely of the herbaceous border. The tender plants come mainly 
from Mexico and China, and are unevenly distributed among the 
different sections of the genus. A conspectus of the cultivated species 
from this point of view appears as follows, the test of the rather vague 
term " hardy " being capacity for enduring an ordinary winter in 
Dublin : 
Hardy. Tender. 
Section I. Rhodiola Scop. ... 20 o 
II. Pseudorhodiola Diels . . i o 
III. Telephium S. F. Gray . . 13 o 
IV. Giraldiina Diels . . . o o 
,, V. Aizoon Koch ... 7 o 
,, VI. Mexicana nov. sect. . . . o 15 
,. VII. Seda Genuina Koch ... 40 40 
VIII. Sempervivoides Boiss . . . 3 2 
IX. Epeteium Boiss. ... 6 3 
,, X. Telmissa Fenzl . . . o o 
90 60 
The division of a plant-group into tender and hardy species, 
although convenient for the horticulturist, is quite unscientific. In the 
case of the present genus, however, this inconvenience is at a minimum, 
since, as seen from the above conspectus, the species composing its 
natural subdivisions are in many cases either all hardy or nearly so, 
or all tender or nearly so. Using the term " hardy " as meaning hardy 
in suitable situations throughout the British Isles, w e find that the 
