Regel et Schmalh, loco citato

3. Regel (E.), Pl. reg. turkestan. et centro-asiat. incol. , secuncluw spec.

liva in h. bot. imp. petrop. culta descripta, in Acta Horti petropolitani, U » p. 263-264 (1877).

4. Hamet (Raymond), Enum. and Desciipt. of Species of Sedum, in P b™-

Chm. Forrest ., in Notes R. R. G. Edinbureh, n. XXIV, p. tab. LX.XXV (janv. 1912).