BROMUS CATHARTICUS PDF

Stem: generally round, hollow; nodes swollen, solid. Leaf: alternate, 2-ranked, generally linear, parallel-veined; sheath generally open; ligule membranous or hairy, at blade base. Inflorescence: various of generally many spikelets. Flower: generally bisexual, minute; perianth vestigial; stamens generally 3; stigmas generally 2, generally plumose. Fruit: grain, sometimes achene- or utricle-like. Note: Generally wind-pollinated.

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Stem: generally round, hollow; nodes swollen, solid. Leaf: alternate, 2-ranked, generally linear, parallel-veined; sheath generally open; ligule membranous or hairy, at blade base. Inflorescence: various of generally many spikelets. Flower: generally bisexual, minute; perianth vestigial; stamens generally 3; stigmas generally 2, generally plumose. Fruit: grain, sometimes achene- or utricle-like. Note: Generally wind-pollinated.

The following taxa in genera not included here , recorded in California from historical collections or reported in literature, are extirpated, lacking vouchers, or not considered naturalized: Acrachne racemosa Roth Ohwi, Allolepis texana Vasey Soderstr.

Decker, Amphibromus nervosus Hook. Nees, Gaudinia fragilis L. Clayton, Schedonnardus paniculatus Nutt. Nash, Themeda quadrivalvis L. Kuntze, Thysanolaena latifolia Hornem. Honda, Tribolium obliterum Hemsl. Renvoize, Zea mays L. Paspalum pubiflorum E. See Glossary p. Smith, Jr. Travis Columbus, Dieter H. Inflorescence: generally raceme- or panicle-like, open to dense; pedicels generally stiff, rigid.

Etymology: Greek: ancient name Note: Bromus scoparius L. Bromus pacificus Shear not in California. Peterson Reference: Brainerd et al. Leaf: glabrous or hairy. Spikelet: mm, strongly flattened. Jepson eFlora Author: Jeffery M.

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Bromus catharticus

Description[ edit ] 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. Ecology[ edit ] The caterpillars of some Lepidoptera use Bromus as a foodplant, such as the chequered skipper Carterocephalus palaemon.

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