CRASSULACEA, XVI. Umanucus. 
Flowers yellow, 5-parted, on short pedicels, collected into a 
cylindrical spike. 
Var. 3, polystachyus (Led. fl. alt. 2. p. 200.) spikes numerous, 
rising from the axils of the radical or cauline leaves, somewhat 
fastigiate. 
Spiny Navel-wort. Fl. June, Jul. Clt. 1810. Pl. 1 foot. 
15 U. matacnoruy’tuvs (D. C. prod. 3. p. 400.) leaves lan- 
ceolate, acutish, unarmed, quite entire ; radical ones rosulate 
before flowering; stem spicate, simple. ¢. H. Native of 
Dahuria, among mountain rocks. Cotylédon malachophylla, 
Pall. itin. 3. append. t. O. f. 1. ed. gall. 8vo. 8. p. 312. t. 70. 
f. 1. Ordstachys malachophylla, Fisch. cat. gor. Flowers 
white, 5-parted, crowded into a dense cylindrical spike. 
Soft-leaved Navel-wort. F]. June, July. Cit. 1815. Pl. ft. 
16 U. ruyrsiriorus (D. C. 1, c.) leaves oblong, quite entire, 
ending each in a soft spine ; radical ones rosulate ; stem spicate, 
simple. &. H. Native of the mountains of Siberia, at Aga. 
Sédum cotylédonis facie floribus carneis, Amm. ruth. p. 72. 
no. 94, Ordstachys thyrsifldra, Fisch. cat. gor. Flowers 
white and flesh-coloured (ex Fisch), 5-parted. Allied to U. 
malachophyllus. 
Thyrse-flomered Navel-wort. Pl. 4 to 4 foot. 
17 U. tevuca’ntHA; leaves terminated by a spine; radical 
ones rosulate, spatulate, convex beneath towards the apex: cau- 
line ones teretely trigonal ; corolla thrice the length of the calyx : 
peduncles all 1-flowered ; anthers discoloured. ¢.H. Native 
of Altaia, in very sterile fields in the Soongarian desert, between 
the mountains of Arkat and Kar-karaly; and among stones in 
the tract of the river Katunja. Root fusiform, or a little 
branched. Corolla white. Cotylédon leucdntha, Led. fl. ross. 
atl. ill. t. 395. fl. atl. 2. p. 198. 
White-flowered Navel-wort. Fl. Aug. Pl. 4 to 4 foot. 
Cult. The hardy perennial species of this genus thrive well 
on rock-work, or on old walls; they will also grow freely in 
pots, in a soil composed of loam, peat, and sand, which should 
be placed among other alpine plants; these are propagated by 
offsets from the roots or by seeds. The seeds of annual and 
biennial kinds should be sown on rock-work, or in the open 
border, in a sandy or gravelly soil. 
XVII. ECHEVE'RIA (this genus is named after M. Eche- 
veri, author of the fine drawings of the Flora Mexicana, com- 
menced under the direction of MM. Sesse, Mocino, and Cer- 
vantes). D.C. prod. 3. p. 401. mem. crass. p. 28.—Cotylédon 
Species of authors. 
‘Lin. syst. Decdndria, Pentagynia. Calyx 5-parted ; sepals 
erect, referrible to leaves, united at the very base (f. 27. a.). 
Petals 5 (f. 27. b.), also united at the base, erect, thick, 
stiffish, thickest at the middle nerve, and nearly trigonal at 
the base, acute. Stamens 10 (£. 27. c.), shorter than the petals, 
FIG. 27. 
and adnate to them at the base. 
Scales 5, short, obtuse. Carpels 
5, ending each in a subulate style. 
—Fleshy shrubs, natives of Mex- 
Ico. Leaves alternate, cauline, 
or rosulate, and nearly opposite, 
nerveless. Flowers sessile, dis- 
Posed along the rachis or branches 
of the cyme, scarlet or yellow. 
: Shrubs. Flowers panicled 
or spicate, scarlet. 
l E. cranpirdnia (Haw. in 
hil, mag. sept. 1828. p. 261.) 
“aves orbicularly cuneated ; pe- 
tioles thick; flowers in spicate 
VOL, 11. 
XVII. Ecneveria. XVIII. SEDUM. 113 
panicles. h.D.G. Native of Mexico. Sweet, fl. gard. 275: 
Lower leaves rosulate, all white or glaucous. Corolla of a 
reddish orange-colour, with a tinge of purple. Stamens white. 
Great-leaved Echeveria. Fl. Oct. Cit. 1828. Pl. 1 to 2 ft. 
2 E. cipprrtora (D.C. prod. 3. p. 401. mem. crass. p. 29. 
t. 5.) leaves flat, cuneiform, acutely mucronate, crowded at the 
tops of the branches; panicle spreading; flowers on short 
pedicels along the branches of the panicle. h.D.G. Native 
of Mexico. Moc. et Sesse. fl. mex. icon. ined. Petals gib- 
bous at the base, between the lobes of the calyx, straight, acute, 
white at the base, and rather scarlet at the apex. 
Gibbous-flowered Echeveria. Fl. July, Oct. 
1 to 2 feet. 
3 E. coccinea (D.C. prod. 3. p. 401.) plant soft, pubescent ; 
leaves spatulately lanceolate; spikes of flowers axillary, elon- 
gated, leafy. bh. D. G. Native of Mexico. Cotylédon coc- 
cinea, Cav. icon. 2. p. 54. t. 170. Lodd. bot. cab. t. 832. 
Sèdum spicàtum, Moc. et Sesse, fl. mex. icon. ined. Corolla 
scarlet on the outside, and yellow on the inside, or paler. Sta- 
mens yellowish. 
Scarlet-flowered Echeveria. 
1 to 2 feet. 
4 E. racemòsa (Schlecht. et Cham. in Linnæa 2. p. 554.) 
plant quite glabrous; radical leaves thickish, elliptic, acute, 
awnless, rosulate ; scapes simple, naked ; scales of scape alter- 
nate, and bracteas scale-formed and caducous; racemes spike- 
formed and elongated; flowers alternate, erect, on short pe- 
dicels. %. D. G. Native of Mexico, on walls at Jalapa. 
Leaves an inch or 2 inches long. Flowers scarlet, and are in 
every respect like those of Æ. coccinea, as well as every other 
part of the plant; but the sepals are shorter and mucronate, 
not acuminated, and the petals are narrower. 
Racemose-fiowered Echeveria. Pl. 4 to 14 foot. 
5 E. TERETIFÒLIA (D. C. prod. l. c. mem. crass. p. 29. pl. 1. 
f. 1.) leaves terete, acute, scattered, almost loose at the base ; 
spikes secund, few-flowered. kh. D. G. Native of Mexico. 
Sèdum teretifòlium, Moc. et Sesse, fl. mex. icon. ined. Very 
nearly allied to Æ. coccinea. 
Terete-leaved Echeveria. Shrub 1 to 2 feet. 
6 E. Lu`'nipa (Haw. in phil. mag. 1831. p. 416.) plant rather 
tufted ; lower leaves Janceolate-cuneated, of a livid colour: 
superior ones lanceolate ; flowers disposed in racemose spikes. 
b. D. G. Native of Mexico. Corolla as in E. grandifolia, 
but more scarlet. 
Fi. Jul. 
Lurid-leayed Echeveria. 
Flowers subcymose, yellow. 
Clt.1826. Sh. 
Fl. Oct. Dec. Clit. 1816. Sh. 
Clt 1830. PL 1 foot. 
** Plant subherbaceous. 
7 E. cxspirésa (D. C. prod. 3. p. 401.) leaves rosulate, nar- 
row, tongue-formed, obcuneated at the apex, and rather mucro- 
nate; flowers cymose. %. D. G. Native of California. 
Cotylédon cespitosa, Haw. misc. p. 180. Coty. linguiformis, 
Ait. hort. kew. 3. p. 109. Sédum Cotylédon, Jacq. fil. eclog. 
1. f.17. Cotyl. refléxa, Willd. enum. suppl. p. 24. Flowers 
ellow. 
Tufted Echeveria. Fl. Jul. Aug. Cit. 1796. PI. 1 foot. 
Cult. Fine glaucous, succulent plants, which deserve to be 
cultivated in every collection. Their culture, propagation, and 
treatment are the same as that recommended for Globilea, p. 106. 
XVIII. SEDUM (from sedeo, to sit ; manner of growth, upon 
stones, rocks, walls, and roofs of houses). D.C. in bull. phil. 
no. 49. mem. crass. t. 1. f. 1. Sedum and Rhodiola, Lin. spec. 
—Sèdum and Anac4mpseros, Tourn. Haw.—Anacdmpseros, 
dans. fam. 2. p. 248. 
i Lin. syst. Delai Pentagynia, Calyx 5-parted (f. 29.a.); 
sepals ovate, usually turgid, leaf-formed, Petals 5 (f. 29. b.), 
