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Bromus arizonicus

(Arizona Brome)

Overview

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Vulnerable

Threat status

Interesting Facts

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Common Names

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Common Names in English:

Arizona Brome

Description

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Genus Bromus

Annuals or perennials . Culms erect , tufted or with rhizomes. Leaf sheaths closed ; leaf blades linear , usually flat; ligules membranous. Panicles spreading or contracted , branches scabrid or pubescent , elongated or arched. Spikelets large, with 3 to many florets , upper florets often sterile ; rachilla disarticulating above glumes and between florets, scabrid or shortly hairy ; glumes unequal or subequal , shorter than spikelet, lanceolate or nearly ovate , (1-) 5-7-veined, apex acute or long acuminate or aristiform ; floret callus glabrous or both sides thinly hairy; lemmas rounded on back or compressed to keel, 5-9(-11) -veined, herbaceous or nearly leathery, margins often membranous, apex entire or 2-toothed; awn terminal or arising from lemma between teeth slightly under apex, rarely awnless or 3-awned; palea narrow, usually shorter than lemma, keels ciliate or scabrid. Lodicules 2. Stamens 3. Ovary apex with appendage ; styles 2, arising from lower front of appendage. Caryopsis oblong , apex hairy, adaxial surface sulcate . Chromosomes large, x = 7, 2n = 14, 28, 42, 56, 70.

About 150 species: temperate regions , mainly in the N hemisphere, also on mountains in the tropics; 55 species (eight endemic, at least three introduced ) in China.[1]

Physical Description

Habit: Graminoid

Habitat

Typically found at an altitude of 0 to 2,017 meters (0 to 6,617 feet).[2]

Biology

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Reproduction

Duration: Annual

Taxonomy

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Notes

Name Status: Accepted Name .

Last scrutiny: 15-Mar-2000

Similar Species

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Members of the genus Bromus

ZipcodeZoo has pages for 88 species, subspecies, varieties, forms, and cultivars in this genus:

B. aleutensis (Aleutian Brome) · B. alopecuros (Roadside Brome) · B. alopecuros caroli-henrici (Weedy Brome) · B. anomalus (Nodding Bromegrass) · B. arenarius (Australian Brome) · B. arizonicus (Arizona Brome) · B. arvensis (Field Brome) · B. benekkenii (Brome) · B. berterianus (Chilean Brome) · B. biebersteinii (Meadow Brome) · B. briziformis (Rattlesnake Brome) · B. carinatus (California Brome) · B. catharticus (Prairie Grass) · B. ciliatus (Canadian Brome) · B. ciliatus var. ciliatus (Fringed Brome) · B. ciliatus var. richardsonii (Fringed Brome) · B. commutatus (Hairy Brome) · B. danthoniae (Oat Brome) · B. diandrus (Great Brome) · B. erectus (Erect Brome) · B. erectus erectus (Upright Brome) · B. frondosus (Weeping Brome) · B. grandis (Tall Brome) · B. grossus (Whiskered Brome) · B. hordaceus (Soft Chess) · B. hordeaceus (Soft Brome) · B. hordeaceus hordeaceus (Soft Brome) · B. hordeaceus molliformis (Soft Brome) · B. hordeaceus thominei (Soft Brome) · B. hordeaceus subsp. hordeaceus (Downy Brome) · B. hordeaceus subsp. molliformis (Soft Brome) · B. hordeaceus subsp. thominei (Soft Brome) · B. inermis (Awnless Brome) · B. inermis inermis (Awnless Brome) · B. inermis inermis var. inermis (Smooth Brome) · B. inermis pumpellianus (Pumpelly's Brome) · B. inermis pumpellianus var. pumpellianus (Pumpelly's Brome) · B. inermis var. arcticus (Awnless Brome) · B. inermis var. inermis (Smooth Brome) · B. inermis subsp. pumpellianus (Pumpelly's Brome) · B. inermis 'Skinner's Gold' (Skinner's Gold Smooth Brome) · B. japonicus (Japanese Brome) · B. kalmii (Arctic Brome) · B. laevipes (Chinook Brome) · B. lanatipes (Woolly Brome) · B. lanceolatus (Mediterranean Brome) · B. latiglumis (Broad-Glumed Brome) · B. lepidus (Slender Soft Brome) · B. luzonensis (Hoary Brome) · B. madritensis (Compact Brome) · B. madritensis madritensis (Compact Brome) · B. mango (Mango Brome) · B. marginatus (Mountain Brome) · B. marginatus var. marginatus (Large Mountain Brome) · B. maritimus (Seaside Brome) · B. mollis non (Soft Chess) · B. mucroglumis (Arizona Brome) · B. nottowayanus (Nottoway Brome Grass) · B. orcuttianus (Orcutt Brome) · B. orcuttianus var. orcuttianus (Orcutt's Brome) · B. pacificus (Pacific Brome) · B. polyanthus (Basin Brome) · B. polyanthus var. paniculatus (Great Basin Brome) · B. polyanthus var. polyanthus (Great Basin Brome) · B. porteri (Nodding Brome) · B. pseudolaevipes (Coast Range Brome) · B. pubescens (Hairy Wood Brome Grass) · B. racemosus (Bald Brome) · B. ramosus (Bald Brome) · B. ramosus benekenii (Hairy Brome) · B. ramosus ramosus (Hairy Brome) · B. richardsonii var. richardsonii (Richardson´s Brome) · B. rigidus (Ripgut Brome) · B. riparius (Meadow Brome) · B. rubens (Foxtail Brome) · B. scoparius (Broom Brome) · B. secalinus (Bromegrass) · B. sitchensis (Alaska Brome) · B. sitchensis var. sitchensis (Sitka Brome) · B. squarrosus (Corn Brome) · B. squarrosus squarrosus (Corn Brome) · B. stamineus (Roadside Brome) · B. sterilis (Barren Bromegrass) · B. suksdorfii (Suksdorf's Brome) · B. tectorum (Cheat Grass) · B. tectorum var. tectorum (Cheatgrass) · B. texensis (Texas Brome) · B. vulgaris (Columbia Brome)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal February 28, 2008:

Identifiers

Footnotes

  1. Liang Liu, Guanghua Zhu & Klaus Ammann "Bromus". in Flora of China Vol. 22 Page 370, 371. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. Mean = 766.050 meters (2,513.287 feet), Standard Deviation = 607.430 based on 80 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012