OREGANUM Nutall, 1840
Synonyms :
Gormania oregana (Nuttall) Britton (1903) / Cotyledon oregana (Nuttall) Fedde (1904) / Echeveria oregana (Nuttall) Nelson & Macbride (1913) / Breitungia oregana (Nuttall) A. Löve & D. Löve (1985)
Distribution : Western USA
Description (according to IHSP 2003) :
Glabrous perennial herbs with stout decumbent branched stems.
Leaves alternate, cuneate to spatulate, broadly rounded or truncate, thickest near the tip, shortly spurred, lustrous, light green, 7 - 12 x 4,4 - 9 mm.
Inflorescences : Flowering branches erect, 8 - 13 cm, inflorescences dense corymbs with primary branches dichotomously forked, bracts spatulate or oblanceolate, spurred, 5 - 8 mm.
FIowers 5-merous, sessile or subsessile, sepals broadly sessile, ovate-lanceolate, acuminate or acute, green, ± 3,5 x 2 mm, erect, petals basally connate, narrowly lanceo-late, aristate, carinate, yellow, ± 10,5 mm, divergent upwards, filaments yellowish or greenish, anthers yellow.
Cytology: 2n = 24.
2 sub-species
Sedum oreganum ssp. tenue R. T. Clausen (1975)