Smooth brome grass (Bromus inermis)
Description
Bromus inermis is a species of the true grass family (Poaceae). This rhizomatous grass is native to Europe. The plant is characterized by an erect, leafy, long-lived perennial, 46 to 91 cm (1 1⁄2 to 3 ft) tall, rhizomatous and commonly producing a dense sod. It starts growth in early spring; flowers May to July; reproduces from seeds, tillers, and rhizomes. It may regrow and re flower in the fall if moisture is sufficient.[1] The leaves are glabrous or occasionally pubescent, particularly on the sheaths; blades 20 to 38 cm (8 to 15 in) long, 0.6 to 1.3 cm (1⁄4 to 1⁄2 in) wide, flat, with a raised and keeled midrib below; sheaths closed, except near collar, and papery when dry; leaves rolled in the bud; ligates up to 0.3 cm (1⁄8 in) long, rounded, and membranous; auricles absent. Bromus species occur in many habitats in temperate regions of the world, including Africa, America, Australia and Eurasia. There are considerable morphological differences between some species, while the morphological differences between others (usually those species that are closely related) are subtle and difficult to distinguish. As such, the taxonomy of the genus is complicated.Bromus is distinguished from other grass genera by a combination of several morphological characteristics, including leaf sheaths that are closed (connate) for most of their length, awns that are usually inserted subapically, and hairy appendages on the ovary. The leaf blades and sheaths, which comprise the leaves can be hairless, sparsely hairy or hairy. The inflorescence is a dense or open panicle, usually drooping or nodding, sometimes spreading (as in Japanese brome, B. japonicus).
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Liliopsida
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Order: Poales
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Family: Poaceae
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Genus: Bromus
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