Physical Description
(
Inglês
)
fornecido por USDA PLANTS text
Perennials, Terrestrial, not aquatic, Rhizomes present, Rhizome elongate, creeping, stems distant, Stems nodes swollen or brittle, Stems erect or ascending, 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, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly closed, Leaf sheath smooth, glabrous, Leaf sheath or blade keeled, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades very narrow or filiform, less than 2 mm wide, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, 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 wit h 2-10 branches, Inflorescence branches more than 10 to numerous, Flowers unisexual, Plants dioecious, Spikelets pedicellate, Spikelets laterally compressed, 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 unisexual, 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 shorter than adjacent lemma, Glumes keeled or winged, Glumes 1 nerved, Glumes 3 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar in texture to glumes, Lemma 5-7 nerved, Lemma body or surface hairy, Lemma apex acute or acuminate, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Lemma with l ong cobwebby white hairs, 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 ellipsoid, longitudinally grooved, hilum long-linear.
Poa arachnifera
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
Poa arachnifera, llamada comúnmente pasto azul de Texas, es una especie de gramínea.
Hibridación con el pasto azul de Kentucky
En los 1990s, se comienza a experimentar con la producción de híbridos entre esta especie y Poa pratensis para obtener un pasto resistente a la sequía. El primer híbrido obtenido se comercializa como "pasto azul tolerante al calor,", ya en este siglo XXI.
Ejemplos de cultivares comerciales, en 2007, son:
- Thermal Blue (Cía. Scotts)
- Solar Green (Cía. Scotts)
- Fahrenheit 90
Taxonomía
Poa arachnifera fue descrita por (L.) Torr. y publicado en Exploration of the Red River of Louisiana 301. 1853.[1]
- Sinonimia
-
Poa arachnifera var. glabrata Vasey
-
Poa densiflora Buckley
-
Poa glabrescens Nash[2]
Referencias
- European Poa Database
- Arroyo, M.T.K., C.P. von Bohlen, L. Cavieres & C. Marticorena. 1992. Survey of the flora of Torres del Paine National Park, Chile. Gayana Botánica. 49(1-4):47-70.
- Boelcke, O., D.M. Moore & F.A. Roig (Eds.). 1985. Transecta Botánica de la Patagonia Austral. Consejo Nacional de Investigación Científica y Técnicas (Argentina). Buenos Aires. XXVIII, 733 pp.
Bibliografía
- Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.
- Correll, D. S. & M. C. Johnston. 1970. Man. Vasc. Pl. Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.
- Darke, R. 1999. Color Encycl. Ornam. Grasses 1–325. Timber Press, Portland.
- Great Plains Flora Association. 1986. Fl. Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence.
- Hitchcock, A. S. 1951. Man. Grasses U.S. (ed. 2) 1–1051. U.S. Department of Agriculture, Washington, D.C.
- Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Man. Vasc. Fl. Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill.
- Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York.
- Soreng, R. J. 1985. Poa in New Mexico, with a key to middle and southern Rocky Mountain species (Poaceae). Great Basin Naturalist 45: 395–422.
- Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. Morrone. 2003 and onwards. On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48. http://www.tropicos.org/Project/CNWG:. In R. J. Soreng, G. Davidse, P. M. Peterson, F. O. Zuloaga, T. S. Filgueiras, E. J. Judziewicz & O. Morrone Internet Cat. New World Grasses. Missouri Botanical Garden, St. Louis.
- Soreng, R. J., L. M. Giussani & M. A. Negritto. 2003. Poa. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae. Contr. U.S. Natl. Herb. 48: 505–580.
- Vickery, J. W. 1970. A taxonomic study of the genus Poa L. in Australia. Contr. New South Wales Natl. Herb. 4: 145–243.
- Wunderlin, R. P. 1998. Guide Vasc. Pl. Florida i–x, 1–806. University Press of Florida, Gainseville.
- licença
- cc-by-sa-3.0
- direitos autorais
- Autores y editores de Wikipedia
Poa arachnifera: Brief Summary
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
Poa arachnifera, llamada comúnmente pasto azul de Texas, es una especie de gramínea.
- licença
- cc-by-sa-3.0
- direitos autorais
- Autores y editores de Wikipedia
Poa arachnifera: Brief Summary
(
Francês
)
fornecido por wikipedia FR
Poa arachnifera est une plante herbacée de la famille des Poacées. Elle a été décrite la première fois en 1853 par John Torrey. C'est une plante de 25 à 85 cm de haut, avec des feuilles simples et alternes présentant des nervures parallèles. Elle fleurit de mars à mai pour présenter des fleurs en panicules. On la rencontre sur des sols secs et frais en Amérique du Nord.
- licença
- cc-by-sa-3.0
- direitos autorais
- Auteurs et éditeurs de Wikipedia
Poa arachnifera: Brief Summary
(
Vietnamita
)
fornecido por wikipedia VI
Poa arachnifera là một loài cỏ trong họ hòa thảo, thuộc chi poa.
- licença
- cc-by-sa-3.0
- direitos autorais
- Wikipedia tác giả và biên tập viên