Sedum oligospermum Maire

The typical form of this species has the leaf apex attenuate. Collections from Sichuan with the leaf apex emarginate to retuse were treated in FRPS as Sedum amplibracteatum var. emarginatum.

Herbs annual. Stems 15-50 cm. Proximal stem leaves alternate and deciduous, others 3-verticillate and usually aggregate below inflorescences; pseudopetiole to 1 cm; leaf blade rhombic-elliptic, 3-6 × 1-2 cm, tapered toward both ends, apex attenuate or emarginate to retuse. Cyme corymbiform, often 3-branched, each branch 1-4-flowered; bracts ± orbicular, slightly longer or subequaling flower. Flowers sessile, unequally 5-merous, less often equally 5-merous. Sepals broadly triangular, 0.5-0.7 mm, apex obtuse. Petals yellow, oblong, 5-6 × 1-1.5 mm, midvein inconspicuous, apex subacute. Stamens 10 or 5, slightly shorter than petals. Nectar scales suboblong to oblong-spatulate, 0.7-0.8 mm. Carpels divergent, ca. 5 mm, base connate for ca. 2 mm. Styles long. Follicles 1- or 2-seeded. Seeds fusiform, 2-3 mm, minutely mammillate. Fl. Jun-Sep, fr. Aug-Nov.

Gansu, Henan, Hubei, Hunan, Shaanxi, Sichuan, Yunnan [Myanmar].

Shady moist slopes in forests, rocks on forested mountain slopes; 1100-2800 m.

Sedum bracteatum Diels, Bot. Jahrb. Syst. 29: 362. 1900, not Viviani (1824); S. amplibracteatum K. T. Fu; S. amplibracteatum var. emarginatum (S. H. Fu) S. H. Fu; S. bracteatum var. emarginatum S. H. Fu.