ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 115 



sepals spreading above. Flowers bright yellow, f-inch across, pedicels very 

 short, hairy. Sepals green, very fleshy, linear-lanceolate, usually glabrous, 

 nearly erect, blunt, f the petals, separate nearly to the base. Petals broadly 

 lanceolate, acuminate or apiculate, wide-spreading, golden yellow. Stamens 

 slightly shorter than the petals, the epipetalous ones free to the base, filaments 

 yellow, anthers orange. Scales small, quadrate, yellowish. Carpels slender, 

 nearly erect, equalling the stamens, tapering into the styles, contracted at the 

 base, wide-spreading in fruit. 



Flowers August. Hardy. 



Habitat. — Manchuria. 



The plant is very rare in cultivation. The name is common enough 

 in lists, and I obtained plants from a large number of different sources, 

 but all were wrongly named, being mostly Aizoon, kamtschaticum, or 

 Ellacombianum. I found the true plant at last in the Botanic Garden 

 at Hamburg, and have to thank Dr. C. H. Ostenfeld of Copenhagen 

 for kindly obtaining for me roots from there while direct communi- 

 cation was cut off owing to the war. Masters' remarks {loc. cit., 

 p. 268) seem to indicate that the plant was less rare in gardens forty 

 years ago. 



Named after Ilarion Sergiewitsch Selsky, Secretary of the 

 Siberian branch of the Russian Geographical Society in Irkutsk. 



38. Sedum Middendorffianum Maximowicz (figs. 54/, 59). 



S. Middendorffianum Maximowicz, " Prim. Flor. Amurensis," 116, 1859. 

 Maximowicz in Bulletin Acad. Peiersbourg, 29, 146, 1883. Masters 

 in Gard. Chron., 1878, ii. 267. 



Allied to Aizoon, Ellacombianum, kamtschaticum. The type has 

 narrower leaves than any of these, but the var. diffusum closely re- 

 sembles in leaf some of the hybridum forms. From Aizoon, Midden- 

 dorffianum is distinguished by its slenderer growth, narrower leaves 

 bearing only a few teeth near the apex, smaller flowers, etc. The 

 narrow leaves alone will distinguish it from the spathulate-leaved 

 Ellacombianum. It differs from kamtschaticum in its unbranched 

 stems, denser inflorescence and smaller flowers ; hybridum stands apart 

 in its creeping habit, many barren shoots, linear sepals and fruit not 

 spreading horizontally ; and floriferum differs in its branched stems 

 and sepals linear or even broader above than below. 



As pointed out by Maximowicz (" Primitise Flor. Amurensis," 116), 

 there are two forms : — (i) with stems erect, crowded, comparatively 

 short, densely leafy, leaves toothed near the apex, inflorescence com- 

 pact ; and (2) stems longer, decumbent, rooting at the base, leaves less 

 crowded, very long, toothed from the middle up, inflorescence larger 

 and more lax. As an additional character it may be added that the 

 leaves of the second are usually broader than those of the first. 

 Both these forms are in cultivation at Petrograd and in British 

 gardens. Intermediates are rare, and the two differ so much in general 

 appearance that it appears desirable to distinguish them. The original 

 description of Maximowicz covers both plants ; Masters applied the 



