The alm (Hordeum) Gene
Gene Class : Albino lemma
Alm green lemma phenotype
(dominant) 		alm albino lemma phenotype
(recessive)

Description:
The lemma and palea are white in color and mostly devoid of chlorophyll, but they terminate into green tips with green awns. The basal part of lower leaf sheaths and stem nodes are devoid of chlorophyll. Ligules and joints between the leaf sheath and blade are white in color.
Description courtesy of the Barley Genetics Stocks AceDB Database

Links:
Barley Genetics Stocks AceDB Database
GrainGenes Gene Record

References:
New and revised names for barley genes. J.D. Franckowiak, U. Lundqvist, and T. Konishi, Barley Genetics Newsletter. Volume 26

Barley Genetic Stock Description: Stock number: BGS 108