Dudleya
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MULTICAULIS  (Rose) Moran, 1953

Synonyms :

Hasseanthus multicaulis  Rose (1903) / Sedum multicaule  (Rose) Fedde (1904)

Hasseanthus elongatus  Rose (1903) / Sedum elongatum  (Rose) Fedde (1904) / Hasseanthus variegatus var. elongatus  (Rose) Johnston (1918)

Sedum oblongirhizum  A.Berger (1930) / Hasseanthus oblongirhizus  (A.Berger) P.H.Thomson (1993)

Sedum sanctae-monicae  A.Berger (1930)

 

Subgenus Hasseanthus

 

Distribution : USA (California: Los Angeles, Orange, Riverside, San Diego and San Bernardino Counties); coastal flats, rock and steep slopes, 10 - 600 (-1200) m, often loamy soils, rare.

 

 

Description (according to J. Thiede in IHSP, 2003) :

 

Stems oblong, 13 - 50 x 3 - 18 mm.

 

Rosette with 6 - 15 leaves, solitary.

 

Leaves erect or spreading, linear, cylindrical except the base, apically narrowly acute, 3 - 15 cm x 1.5 - 6 (basally 3 - 10) mm, vernal.

 

Inflorescence : Scape 4 - 25 (-36) cm, inflorescences 1 - 35 per plant, cymose, with 2 to several scorpioid branches, these 2 - 10 cm, with 3 - 15 flowers, pedicels 0 - 3 mm.

 

Flowers : Sepals triangular-ovate to linear-oblong, acute to obtuse, 2 - 4 mm, corolla 12 - 18 mm in diameter, petals elliptic-lanceolate, spreading or apically somewhat recurved, acute, 5 - 9 x 2 - 3 mm, yellow, often spotted with red, tube 1 - 2 mm, anthers darker yellow.

 

Flowering time : April - June.

 

Cytology : n = 17

 

Very variable as to plant size. Most closely related to D. variegata with very sirnilar flowers (Moran 1950).


In habitat, Top of the World, Laguna Beach, CA, USA :




 


Orange County, CA, USA :






Photos Michael Wisnev.




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