Keywords to find descriptions of mutants in the International Database for Barley Genes and Barley Genetic Stocks (bgs.nordgen.org):

Glume: bra, bracteatum, elongated glume, elongated outer glume, eog, gillette, lep, lga, long glume awn, macrolepis, many glumes on lateral spikelets, semibracteatum, short rachilla hair, srh, third outer glume, trd

Lemma: acute lemma on lateral spikelets, branched awn, gth, hairs on lemma nerves, hln, pointed lateral spikelet, sci, scirpoides spike, sls, small lateral spikelet, toothed lemma, triaristatum, triple awned lemma, trp

Palea: adp, awned palea