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Brief Summary ( англиски )

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poa secunda is a native grass in western North America stretching from Alaska to Northwest Mexico. Widely disjunctively, there are also populations of this species in Chile and Argentina. Habitats include saline and alkaline meadows, chaparral, foothill woodland, grasslands, sagebrush scrub and dry meadows; this grass thrives in rich clay-loam edaphic conditions, and even does well in rocky or sandy soils.

This shallow rooted perennial bunchgrass has an erect tufted growth form, and presents a blue-purple to glaucous appearance, attaining a height of one meter. Poa secunda is highly drought resistant and is useful for forage and for erosion control on disturbed slopes.
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Physical Description ( англиски )

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Perennials, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems with inflorescence 1-2 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blades mostly glabrous, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence a contracted panicle, narrowly paniculate, branches appressed or ascending, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence with 2-10 branches, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets dorsal ly compressed or terete, Spikelet less than 3 mm wide, Spikelets with 2 florets, Spikelets with 3-7 florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes distinctly unequal, Glumes shorter than adjacent lemma, Glumes 3 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar in texture to glumes, Lemma 5-7 nerved, Lemma glabrous, Lemma body or surface hairy, Lemma apex truncate, rounded, or obtuse, Lemma apex acute or acuminate, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipso id, longitudinally grooved, hilum long-linear.
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Poa secunda ( англиски )

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Poa secunda (variously known by the common names of Sandberg bluegrass,[2][3][4] alkali bluegrass,[4] big bluegrass,[4] Canby's bluegrass,[2] Nevada bluegrass,[4] one-sided bluegrass,[3] Pacific bluegrass,[2] pine bluegrass,[2] slender bluegrass,[2] wild bluegrass,[4] and curly bluegrass[1]) is a widespread species of perennial bunchgrass native to North and South America.[4] It is highly resistant to drought conditions, and provides excellent fodder;[3] and has also been used in controlling soil erosion,[4] and as revegetator,[4] often after forest fires.[6] Cultivars include 'Canbar', 'Service', 'Sherman', and 'Supernova'.[7] Historically, indigenous Americans, such as the Gosiute of Utah, have used P. secunda for food.[8] It was originally described botanically in 1830 by Jan Svatopluk Presl, from a holotype collected from Chile by Thaddäus Haenke in 1790.[2]

Native distribution

References

  1. ^ a b NatureServe (2 June 2023). "Poa secunda". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 9 June 2023.
  2. ^ a b c d e f g Poa secunda was originally described and published in Reliquiae Haenkeanae 1(4–5): 271. 1830. "Name - Poa secunda J.Presl". Tropicos. Saint Louis, Missouri: Missouri Botanical Garden. Retrieved 15 December 2012.
  3. ^ a b c d "Profile for Poa secunda (Sandberg bluegrass)". PLANTS Database. USDA, NRCS. Retrieved 15 December 2012.
  4. ^ a b c d e f g h i j k "Poa secunda". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 15 December 2012.
  5. ^ "TPL, treatment of Poa secunda J.Presl". The Plant List; Version 1. (published on the internet). Royal Botanic Gardens, Kew and Missouri Botanical Garden. 2010. Retrieved 15 December 2012.
  6. ^ Fact Sheet available in PDF and DOC form from USDA PLANTS Profile
  7. ^ "Conservation Plant Characteristics for Poa secunda (Sandberg bluegrass)". PLANTS Database. USDA, NRCS. Retrieved 15 December 2012.
  8. ^ Chamberlin, R. V. (1911). "The Ethno-Botany of the Gosiute Indians of Utah". Memoirs of the American Anthropological Association. 2 (5): 331–405 (p. 377).
Poa secunda, Idaho
Poa secunda in summer dry season

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Poa secunda: Brief Summary ( англиски )

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Poa secunda (variously known by the common names of Sandberg bluegrass, alkali bluegrass, big bluegrass, Canby's bluegrass, Nevada bluegrass, one-sided bluegrass, Pacific bluegrass, pine bluegrass, slender bluegrass, wild bluegrass, and curly bluegrass) is a widespread species of perennial bunchgrass native to North and South America. It is highly resistant to drought conditions, and provides excellent fodder; and has also been used in controlling soil erosion, and as revegetator, often after forest fires. Cultivars include 'Canbar', 'Service', 'Sherman', and 'Supernova'. Historically, indigenous Americans, such as the Gosiute of Utah, have used P. secunda for food. It was originally described botanically in 1830 by Jan Svatopluk Presl, from a holotype collected from Chile by Thaddäus Haenke in 1790.

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Poa secunda ( шпански; кастиљски )

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Poa secunda es una especie de planta herbácea perteneciente a la familia de las poáceas. Es nativa de Norteamérica.[1]

Descripción

Plantas azuladas. Perennes, densamente peludas, con brotes estériles intra e extravaginales. Culmos erectos, de 40-120 cm de altura. Vaina de la hoja lisa o escabrida; lígula de 0.5-3 mm, abaxialmente escabrida, truncadas a agudos, de macollos todos truncados. Las inflorescencias en panículas estrechas, densas, de 10-15 × 1-3 cm; ramas fuertemente ascendente, con espiguillas de la base. Espiguillas angostamente lanceoladas, ligeramente comprimidas, 8-10 mm, floretes 4-7; glumas amplia subiguales, la más baja 3-3.5 mm, la superior de 4-4.5 mm. Fl. y fr. Mayo-julio. Tiene un número de cromosomas de 2 n = 62, 63, 64, 65, 68, 70, 71, 97.[2]

Distribución y hábitat

Introducida en China, India, Pakistán, SW Asia (Irán), Australia. Es nativa de Norteamérica y Suramérica.

Taxonomía

Poa secunda fue descrita por Jan Svatopluk Presl y publicado en Reliquiae Haenkeanae 1(4–5): 271. 1830.[3][4][5]

Subespecies
  • Poa secunda ssp. juncifolia
  • Poa secunda ssp. secunda[6]
Sinonimia
  • Aira brevifolia Pursh, Fl. Amer. Sept. 1: 76 (1813).
  • Airopsis brevifolia (Pursh) Roem. & Schult., Syst. Veg. 2: 578 (1817).
  • Poa fulvescens Trin., Linnaea 10: 306 (1836).
  • Sclerochloa californica Munro in G.Bentham, Pl. Hartw.: 342 (1857), nom. nud.
  • Atropis scabrella Thurb. in S.Watson & al., Bot. California 2: 310 (1880).
  • Atropis tenuifolia Thurb. in S.Watson & al., Bot. California 2: 310 (1880).
  • Glyceria canbyi Scribn., Bull. Torrey Bot. Club 10: 77 (1883).
  • Poa scabrella (Thurb.) Benth. ex Vasey, Grass. U.S.: 42 (1883).
  • Sporobolus bolanderi Vasey, Bot. Gaz. 11: 337 (1886).
  • Poa orcuttiana Vasey, W. Amer. Sci. 3: 165 (1887).
  • Panicularia nuttalliana Kuntze, Revis. Gen. Pl. 2: 782 (1891).
  • Panicularia scabrella (Thurb.) Kuntze, Revis. Gen. Pl. 2: 782 (1891).
  • Aira missurica Spreng. ex B.D.Jacks., Index Kew. 1: 68 (1893), pro syn.
  • Poa gracillima Vasey, Contr. U. S. Natl. Herb. 1: 272 (1893).
  • Poa laevis Vasey, Contr. U. S. Natl. Herb. 1: 273 (1893), nom. illeg.
  • Poa lucida Vasey, Contr. U. S. Natl. Herb. 1: 273 (1893).
  • Poa sandbergii Vasey, Contr. U. S. Natl. Herb. 1: 276 (1893).
  • Poa buckleyana Nash, Bull. Torrey Bot. Club 22: 465 (1895).
  • Atropis canbyi (Scribn.) Beal, Grass. N. Amer. 2: 580 (1896).
  • Atropis laevis Beal, Grass. N. Amer. 2: 577 (1896).
  • Festuca patagonica Phil., Anales Univ. Chile 94: 174 (1896).
  • Festuca spaniantha Phil., Anales Univ. Chile 94: 174 (1896).
  • Poa laevigata Scribn. in N.L.Britton, Man. Fl. N. States: 141 (1897).
  • Poa capillaris Scribn., Bull. Div. Agrostol. U.S.D.A. 11: 51 (1898), nom. illeg.
  • Poa acutiglumis Scribn., Circ. Div. Agrostol. U.S.D.A. 9: 4 (1899).
  • Poa incurva Scribn. & T.A.Williams, Circ. Div. Agrostol. U.S.D.A. 9: 6 (1899).
  • Poa invaginata Scribn. & T.A.Williams, Circ. Div. Agrostol. U.S.D.A. 9: 6 (1899).
  • Poa leckenbyi Scribn. & T.A.Williams, Circ. Div. Agrostol. U.S.D.A. 9: 2 (1899).
  • Poa nudata Scribn., Circ. Div. Agrostol. U.S.D.A. 9: 1 (1899).
  • Poa saxatilis Scribn. & T.A.Williams, Circ. Div. Agrostol. U.S.D.A. 9: 1 (1899).
  • Poa tenerrima Scribn., Circ. Div. Agrostol. U.S.D.A. 9: 4 (1899).
  • Poa wyomingensis Scribn., Proc. Davenport Acad. Nat. Sci. 7: 242 (1899).
  • Poa canbyi (Scribn.) Howell, Fl. N. W. Amer. 1: 764 (1903).
  • Poa alcea Piper, Bull. Torrey Bot. Club 32: 436 (1905).
  • Poa multnomae Piper, Bull. Torrey Bot. Club 32: 435 (1905).
  • Poa helleri Rydb., Bull. Torrey Bot. Club 36: 534 (1909).
  • Poa fallens Pilg., Repert. Spec. Nov. Regni Veg. 12: 306 (1913).
  • Paneion sandbergii (Vasey) Lunell, Amer. Midl. Naturalist 4: 223 (1915).
  • Puccinellia canbyi (Scribn.) Ponert, Feddes Repert. 84: 73 (1974).
  • Puccinellia laevis (Beal) Ponert, Feddes Repert. 84: 739 (1974).
  • Puccinellia scabrella (Thunb.) Ponert, Feddes Repert. 84: 740 (1974).

Referencias

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Poa secunda: Brief Summary ( шпански; кастиљски )

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Poa secunda es una especie de planta herbácea perteneciente a la familia de las poáceas. Es nativa de Norteamérica.​

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