ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 9 
30. A few of these, such as Aizoon and kamtschaiicum, are plants 
which have their headquarters in Siberia ; two others, Telephium 
and roseum (which occurs in the var. Tachiroi), have a much wider 
range ; but the majority are endemic. A few of them, such as 
alboroseum, Sieboldii, and spectabile, have long been known in cultiva- 
tion, the last two being among the handsomest of the garden Sedums. 
To the Telephium section belongs nearly one-half of the species 
represented in the Japanese flora, while an equal number belongs 
to the Japonica section, which consists mostly of smallish plants with 
yellow flowers. Of the latter, a ternate-leaved species, S. lineare, 
is in cultivation in our gardens, and two others, japonicum var. 
senanense and Zentaro-Tashiroi, are reported as in cultivation in 
Japan. Of the whole Japanese Sedum flora, one-half is known in 
gardens. 
Literature. — Matsumura, " Index Plantarum Japonicarum," 2, 
Part II., 1912. Maximowicz, " Diagnoses Plantarum Novarum Asiati- 
carum," v., in Bull. Acad. Imp. des Sciences de St. Petersbourg, 29 
(reprinted in Melanges Biologiques, 11), 1884. Making, various 
papers in Bot. Mag., Tokio, &c. 
Note. — Formosa yields half a dozen Sedums, and the Philippines 
several. One of the former, S. formosamtm, is included in the present 
paper. 
The United States and Canada. 
Sedums are widely scattered throughout North America, but a 
larger number is found in the mountainous regions of the west than 
in the east. Two widespread species, ternatum and pulchellum, 
long grown in European gardens, were described by Michaux in his 
"Flora Boreali- Americana " as early as 1803. Another plant found 
in the Eastern States, Nevii, is also long known in British gardens. 
From the Western States have come two pretty species, spathuli folium 
and oreganum ; also two reflexum-like plants of less merit, Douglasii 
and stenopetalum, and the tall and handsome rhodanthum. Many 
species found in the Western States do not appear to be anywhere 
in cultivation, and my efforts to procure them have had only a limited 
success. The polymorphic Rose-root, S. roseum, which has a circum- 
polar range, is by American botanists restored to its place as a separate 
genus (Rhodiola) ; it spreads in varying form along the western moun- 
tains, and has been split up into half a dozen species. Except for 
5. roseum s.s. sent me from Washington, I cannot find that any of the 
American Rhodiola forms are in cultivation. Altogether about 
50 species of Sedum (including some of the " spHt " genera) occur 
in the States, mostly in the south-western portion. Two European 
species, annuum and villosum, range in the native state west to Green- 
land, and are thus included also in the American flora. Several 
familiar Old World kinds — acre, reflexum, spurinm, and Telephium 
subsp. Fabaria — are naturahzed and run wild in the Eastern States. 
