Bromus japonicus
Bromus japonicus, the Japanese brome, is an annual brome grass native to Eurasia. The grass has a diploid number of 14. Description Bromus japonicus is an annual or biennial tufted grass growing high. The culms are erect or ascending. The sheaths of the grass are pubescent, though upper sheaths are occasionally glabrous. The pubescent, obtuse ligules are long. The densely hairy leaf blades are long and wide. The open and secund panicles have divergent branches with drooping tips. The panicles are long and wide. The divergent branches are typically longer than the purplish spikelets and are ascending or spreading. The lanceolate spikelets are long and have slender pedicels. The six to twelve florets on each spikelet have concealed bases at maturity. The glumes are either smooth or scabrous. The acute lower glumes are three-nerved and long, and the obtuse upper glumes are five-nerved and long. The obtuse and firm, almost leathery lemmas are long and wide, with nine inconspicuous nerves. The margins of the lemmas roll slightly inwards at maturity, and the twisted and strongly divergent awns are long. The palea is distinctly shorter that its glume. The anthers are long. The caryopses are slightly shorter than the paleas, and