CYMOSA ssp. CYMOSA
Synonyms :
Cotyledon nevadensis S.Watson (1876) / Dudleya nevadensis (S.Watson) Britton & Rose (1903) / Echeveria nevadensis (S.Watson) Nelson & Macbride (1913) / Cotyledon laxa var. nevadensis (S.Watson) Jepson (1936)
Cotyledon purpusii K.Schumann (1896) / Echeveria purpusii (K.Schumann) K.Schumann (1896) / Dudleya purpusii (K.Schumann) Britton & Rose (1903)
Cotyledon plattiana Jepson (1901) / Dudleya plattiana (Jepson) Britton & Rose (1903) / Echeveria plattiana (Jepson) Nelson & Macbride (1913)
Dudleya angustiflora Rose (1903) / Cotyledon angustiflora (Rose) Fedde (1904) / Echeveria angustiflora (Rose) A.Berger (1930)
Dudleya gigantea Rose (1903) / Cotyledon gigantea (Rose) Fedde (1904) / Dudleya cymosa ssp. gigantea (Rose) Moran (1957)
Dudleya sheldonii Rose (1903) / Cotyledon sheldonii (Rose) Fedde (1904) / Echeveria sheldonii (Rose) A.Berger (1930)
Echeveria amadorana A.Berger (1930)
Echeveria lanceolata var. incerta Jepson (1936)
Distribution : USA (south-western Oregon, northern and central California); rocks and slopes, more rarely shady canyons, 100 - 2700 m.
Description (by J. Thiede in IHSP, 2003) :
Stems short, mostly < 5 x 1 - 3.5 cm.
Rosettes 6 - 20 (-25) cm in diameter, with 6 - 25 leaves, solitary or few together.
Leaves oblong-oblanceolate to rarely spatulate, acute, attenuate or rarely long-attenuate, (1.5-) 4 - 17 x 1 - 6 cm, 1 - 5 mm thick, glaucous.
Inflorescence : Scape (5-) 15 - 45 cm, inflorescence obpyramidal, mostly with 2 – 4 not or to 3x branched scorpioid branches, these 1 - 5 (-15) cm, with (1-) 2 - 10 (-20) flowers, pedicels erect, lowermost 5 - 15 mm.
Flowers : Calyx 3 - 7 mm, basally rounded to truncate, sepals triangular to triangular-ovate, acute to ± long-attenuate, 1.5 - 5 x 1.5 - 4 , petals elliptic to narrowly lanceolate, acute, apically spreading at 45 – 90°, 7 - 15 x 2 - 4 mm, yellow, orange or red, keel occasionally glaucous, tube 1 – 2.5 mm.
Cytology : n = 17