ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 99 



S. Ewersii is a well-known garden plant, exhibiting very little 

 variation. Var. homophyllum I have had from Kew, Wisley, the 

 Chelsea Physic Garden, and Mr. E. A. Bowles, in all cases under the 

 name cyaneum. For the true S. cyaneum, see p. 106. 



31. Sedum cauticolum Praeger (figs. 47 J, 48). 



S. cauticolum Praeger in Journ. oj Bot., 54, 41, 1917. 



Nearest to the well-known S. Sieholdii, from which it differs in its 

 opposite stalked (not ternate sessile) leaves, lax leafy inflorescence, 



Ob 



Fig. 47. — Sepals and carpels of (a) 5. Sieboldii, (6) 5. cauticolum. 



carpels tapered below (not abruptly contracted into a short stalk), and 

 other characters. 



Description. — A glaucous herbaceous perennial. Rootstock rather thickened, 

 emitting several stems above and several long fleshy tapered roots below, 

 and also slender white subterranean shoots, bearing opposite small colourless 

 scale-like leaves ; these shoots come to the surface and produce stems several 

 inches from the parent plant. Stems slender, procumbent or low-arching, about 

 6 inches long, smooth, round, dark purple. Leaves opposite (occasionally 

 alternate), glaucous, paler on back, finely dotted with purple, especially on back, 

 orbicular-spa thulate, i inch long by J inch broad, very blunt at apex, bearing 

 about two blunt teeth on each side in the upper part, narrowed below to a distinct 

 petiole. Inflorescence a terminal lax very leafy flattish umbellate cyme, the 

 uppermost bracts rhomboid-lanceolate ; pedicels very slender, exceeding the 

 flowers. Buds ovate-lanceolate, blunt, ribbed, the ribs glaucous green, the 

 furrows red. Flowers J inch across, rosy purple. Sepals small, glaucous, linear- 

 lanceolate, acute, dotted purple, divided to the base. Petals 4 times the sepals, 

 lanceolate, acute, concave, wide-spreading, on face rosy purple turning white at 

 base, on back purple along the edges, whitish dotted purple down the centre. 

 Stamens equalling the petals, filaments pink, anthers red. Scales straight, 

 wide-spreading, oblong, retuse, colourless. Carpels erect, slightly shorter than 

 the stamens, bright rosy purple mottled white, cuneate below, styles erect nearly 

 equalling the ovaries. 



Flowers September-October. Hardy. 



Habitat. — Cliffs of southern coast of Yezo, Japan. 



A pretty and interesting species, sent by Prof. Miyabe from the 

 University Botanic Garden of Sapporo with the note " sp. aff. 5. Sie- 

 holdii with opposite leaves and early-flowering habit." In British 



