206 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
93. Sedum nutans Rose (fig. 117). 
S. nutans Rose in Bull. New York Bot. Garden, 3, 43, 1903. 
Synonym. — Cremnophila nutans Rose in "N. Amer. Flora," 22, 56, 1905. 
A remarkably massive plant with inflorescence of a type rare 
in Sedum — an elongated, compact panicle. Easily recognized by this 
character, by its yellow-green flowers, and very large leaves over half- 
an-inch thick. Its peculiar characters caused Dr. Rose to pl^ce it in 
a separate genus, but as most of these features can be matched in 
one or another species of Sedum, it seems best to leave it in that 
genus where Dr. Rose originally placed it. 
Description. — A massive, very succulent, glabrous, evergreen perennial. 
Stem erect (in nature pendent on cliffs), J-f inch thick, branched, round, smooth 
save for leaf-scars, bare below. Leaves aggregated at top of branches, up to 
3 by 2 by f inch or more, sessile, oblong-ovate to trapezoidal, blunt, dark green, 
smooth, fiat above, rather rounded below, crowded. Flower-stem axillary, 
ascending, 6 to 8 inches long, leafy, leaves alternate, almost obovoid, i to f inch 
long, smaller upwards. Inflorescence an elongated panicle about 3 inches long 
by i\ inches wide ; branches deflexed, leafy, with linear-obovate bracts, the 
lower branches with up to 8 flowers ; panicle nodding. Buds obovate, very 
blunt. Flowers greenish-yellow, cup-shaped, 5- (occasionally 6-) parted. Sepals 
ascending, linear to linear-obovate, very fleshy, flattish on face, rounded on 
back, pale green, unequal, as long as the petals. Petals lanceolate, apiculate, 
ascending or patent, greenish yellow, separate to the base. Stamens equalling 
the petals, slightly spreading, filaments pale green, anthers yellow. Scales 
cuneate-oblong, rather longer than broad, upper part orange-scarlet. Carpels 
whitish, erect, with green slender spreading styles. 
Flowers March (gentle heat). Not hardy. 
Habitat. — Cliffs at Tepoxtlan, Mexico. 
Received from Edinburgh ; seen also at Kew. 
The name has reference to the nodding habit of the inflorescence, 
a character very unusual in Sedum. 
Dr. Rose describes the petals as bright yellow ; but in the 
Edinburgh plant (which came from Washington) they are greenish 
yellow. 
94. Sedum dendroideum M09. and Sesse (fig. 118, 1196). 
S. dendroideum M09. and Sesse ex De CandoUe "Prodromus," 3, 409, 
1828. Hemsley, "Biol. Centr. Amer., Botany," 1, 394. "N.Amer. 
Flora," 22, 69. 
Illustration. — De Candolle. " Memoire Crassul.," pi. 9. 
This species, with 5. praealtum and 5. confusum, form a closely 
related group much confused in gardens, and usually misnamed. 
The common plant of English cultivation, often seen in cottage 
windows, and, when named, usually called dendroideum, is 5. praealtum, 
S. confusum is rarer in gardens, and is also usually labelled dendroideum 
when named at all. S. dendroideum itself I have only met with as 
an unnamed plant (^Yt) ^^^^ from Washington. I have not succeeded 
in flowering it, but the leaf characters appear to identify it satis- 
factorily. In America, on the other hand, dendroideum appears to 
