PARAGUAYENSE ssp. PARAGUAYENSE

Synonyms :

Echeveria weinbergii hort. ex T.B.Shepherd (1912) / Byrnesia weinbergii (T.B.Shepherd) Rose (1922) / Graptopetalum weinbergii (T.B.Shepherd) Walther (1930) / Sedum weinbergii (T.B.Shepherd) Berger (1930)

Echeveria arizonica hort. ex Rose (1922)

Graptopetalum byrnesia Walther (1931) / Echeveria byrnesia (Walther) hort. ex Rooksby (1933).

Distribution : Only known from cultivation, probably E-C Mexico.

Description (according to J. Thiede in IHSP, 2003) :

Shrublets, stems decumbent or pendent, only basally branched, to > 30 cm, 8 – 12 mm in diameter.

Rosette lax, 7 – 12 (-16) cm in diameter, with 15 – 25 (-30) leaves scattered over 4 – 8 cm.

Leaves spreading to somewhat recurved, cuneate to obovate, shortly pointed, 4 – 7 (-8) x 1.5 – 3 (-4) cm, 7 – 10 mm thick, ± rose-coloured, later mostly lavender.

Inflorescences mostly 1 – 2 cm below the branch tip, usually 1 or 2 per rosette, 8 – 22 cm, ± rose-coloured, thyrses 3 – 12 cm, with 2 – 4 (-6) mostly simple or 2x furcated scorpioid branches with 5 - 15 flowers, pedicels 4 – 16 mm.

Flowers 5-merous, calyx 3 – 5 x 4 – 8 mm, sepals triangular-ovate, acute, almost equal, 1.3 – 3 mm broad, corolla 13 – 19 mm in diameter, petals triangular-ovate, 6 – 8 x 3 – 4.5 mm, white, tube 4 – 5 x 5 – 7 mm, acute, with small scattered red spots.

Cytology : n = 68

….and reveals the arrangement of the anthers inside the bud :

Upon opening, Graptopetalum flowers have upright stamens ….

… as soon as the petals begin to spread, the stamens are recurving also :

………. and within a day, the intrapetalous stamens reflex through the petals :

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