Parentage : Echeveria prolifica x Sedum stahlii

Chance seedling in the collection of Roy Mottram, Whitestone Nurseries, UK.


Published in Sedum Society Newsletter 30, 3, fig. on front cover, 1994 :


There has been much correspondence recently between members concerning common, familiar plants apparently not mentioned in print. Spontaneous intergeneric hybrids among American genera of Crassulaceae are generally of an unscientific, haphazard nature and of questionable origin, but are treasured by succulent growers and the general public alike. It therefore gives us much pleasure to introduce to the hobby, a worthwhile hybrid of known origin which appeared recently in the collection of Roy Mottram of Whitestone Nurseries, Sutton-under-Whitestonecliffe, Thirsk, North Yorkshire, England.


Sedeveria 'Whitestonecrop' is a hybrid between Echeveria prolifera Otero F24  and Sedum stahlii a plant not unlike Sedum x rubrotinctum in colour and size but with much larger, many-branched inflorescences.


Description :


Form : Similar in stature and growth to Sedum x rubrotinctum poss­essing more-apiculate, more-imbricate leaves with flatter upper faces.


Leaves : Alternate to 30 x 10 x 8mm below, becoming smaller up the stems; more clustered at stem tips. Mid green tinged red/pearly pink especially on tips and lower surfaces. Glabrous, fairly shiny.


Inflorescence : Many-branched cyme carrying about 100 flowers with leaf-like bracts. Stout pink pedicels of varying length.


Buds : Conical.


Flowers : Flowers in forks of pedicels open first. Mostly 5-(6-7) partite.


Sepals : Uneven, free 3-5mm, same shape and colour as leaves.


Petals : Lanceolate, connate for nearly 2mm.    Upright below then spreading. Stamen inserted 1 -5mm from the base. Grooved above, keeled below, about 10mm long. Pure yellow.


Stamens : Yellow, two whorls, upright, projecting to the same length.


Carpels : Green-yellow at first about 5mm long with long, fine beaks.


Nectaries : Green-yellow, only visible when petal is removed. Wider than tall.


Flowering : June.


The hybrid appears to have kept most of the characteristics of Sedum stahlii except for its opposite-decussate, club-shaped leaves and small inflorescence of stellate flowers.

Photos Emmanuelle Aubé

Photo Margrit Bischofberger

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