Sedum
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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. oreganum

Sedum oreganum ssp. tenue R. T. Clausen (1975)

 

 




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