Dudleya
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CYMOSA ssp. COSTAFOLIA  Bartel & Shevock, 1990

Synonym : Dudleya costafolia  (Bartel & Shevock) P.H.Thomson (1993)

 

Distribution : USA (California: Tulare County: Sequoia National Forest); limestone rocks, only known from the type locality.

 

 

Differs from ssp. cymosa :

 

Stems 1.5 - 2 cm in diameter.

 

Rosettes 1 - 5 (-7) cm in diameter, with 7 - 15 (-20) leaves, richly branched, densely cushion-forming with 5 - 40 rosettes per cushion.

 

Leaves (weakly) linear to linear-oblanceolate, (1-) 2 - 7 (-8) cm x 2.5 - 7 (-8) mm.

 

Inflorescence : Scape 5 - 15 (-20) cm, scorpioid branches 1 - 4 cm, with 2 - 7 flowers, pedicels erect, 2.5 - 9 (-17) mm.

 

Flowers : Calyx 4 - 6 mm, 2 - 5 x 2 - 4 mm, usually somewhat glaucous, petals erect, lanceolate to narrowly acute, spreading at the tips, 5 - 13 (-17) x 2 - 4 mm,

bright yellow, tube 1 - 3 mm.

 

Cytology : n = 17

 

Differs from all other subspecies of D. cymosa by its narrow leaves in numerous small and densely arranged rosettes (cf. protologue).

 

Note :

On

http://www.crassulaceae.com/botanik/pflanzen/botspezies_seite_en.asp?main=133565&menu=1&bgt=cm&genus=DUDLEYA&gnr=1510

it is wrongly listed as "C. abramsii ssp. costifolia". However the correct name is "costafolia" and it is a ssp. of D. cymosa.

 

 




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