1	"Leaves dorsiventrally flattened, oblong-elliptic to spathulate, 15–25 mm wide; inflorescence a terminal panicle to 20 cm long"	"Sedum praealtum {Sedum praealtum subsp. praealtum}"
1	"Leaves terete or subterete, shape not as above, less than 10 mm wide; inflorescence a terminal cyme to c. 6 cm long"	2
2	"Plants herbaceous, leaves less than 6 mm long"	3
2	"Stems somewhat woody, leaves usually more than 6 mm long"	4
3	"Stems procumbent or ascending, 5–25 cm long, yellow-green; petals bright yellow, 6–8 mm long; stamens 10; plant perennial"	"Sedum acre"
3	"Stems erect, 2–5 cm long, reddish; petals white or pale pink, c. 3 mm long; stamens 4–5; plant annual"	"Sedum caespitosum"
4	"Leaves terete, cylindric, apex rounded"	"Sedum rubrotinctum"
4	"Leaves subterete with the upper surface slightly flattened, apex acute or obtuse, if ever somewhat cylindric then leaves less than 12 mm long"	5
5	"Matt-forming subshrubs; leaves up to 10 mm long, apex obtuse; flowers less than 5 mm diam."	"Sedum album"
5	"Leaves usually more than 10 mm long, apex acute; flowers more than 5 mm diam."	6
6	"Flowers greenish-white or straw-coloured"	"Sedum sediforme"
6	"Flowers bright yellow"	"Sedum rupestre"