Sedum alfredi Hance

[From Latin, Sedum = sedentary]

Synonymy: Sedum morrisonense Hay., Sedum formosum.

Physical description: It is a perennial seashore herb found in China and Taiwan which grows to a height of 15 cm. The stems are dichotomous and succulent. Leaves: simple, without stipules, and alternate or opposite. The blade is obovate to nearly orbicular, and 1.5 cm-2.2 cm x 8 mm-1.2 cm. The apex of the blade is broadly round and the base cuneate. The inflorescences are multiflowered and 5 cm-8 cm long cymes. The flowers are sessile, 1 cm long, yellow and show a few leaf-like bracts. The calyx consists of 5 sepals which are 2mm-3mm long, asymmetrical and linear-lanceolate. The corolla consists of 5 petals which are lanceolate, 6 mm-7 mm long and acuminate. The stamens are shorter than the petals. The gynecium consists of

Fig. 149. Sedum alfredi Hance.

independent carpels, the fertile ones being upright, lanceolate, 5mm-6mm long and terminated by a 1 mm style at the apex. The fruits are follicles containing many seeds (Fig. 149).

Pharmaceutical potential: The pharmacological potential of Sedum alfredi is to date unknown but one might have a closer look at it as a crude alkaloid fraction of Sedum sarmentosum Bunge at various doses (50 ^g/mL-150^g/mL) for 24 or 48 h. inhibits dose-dependently the survival of murine hepatoma (BNL CL.2) and human hepatoma (HepG2) cells cultured in vitro (Kang TH et al., 2000). In addition, a carbohydrate characterized from Sedum spectabile when condensed with acetone (helotylphin), destroys duck's Hepatitis B Virus and modulates immunity. Note that a number of polysaccharides characterized from Sedum telephium display anti-inflammatory and anticomplementary properties experimentally (Sendl A et al., 1993). In general, Oligosaccharides and polysaccharides of the Sedum species and Cras-sulaceae may hide a stock house of pharmacological activities, but this has yet to be confirmed.

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