Distribution in Egypt
(
Inglês
)
fornecido por Bibliotheca Alexandrina LifeDesk
Nile region, oases, Egyptian desert, Res Sea coastal strip, Gebel Elba and Sinai (St.Katherine).
- autor
- BA Cultnat
- fornecedor
- Bibliotheca Alexandrina
Global Distribution
(
Inglês
)
fornecido por Bibliotheca Alexandrina LifeDesk
Throughout the tropics and subtropics.
- autor
- BA Cultnat
- fornecedor
- Bibliotheca Alexandrina
Comments
(
Inglês
)
fornecido por eFloras
Aristida adscensionis is a pan-tropical weed and morphologically extremely variable. There are no discontinuities between var.
adscensionis and either var.
pumila or var.
ehrenbergii and the distinctions between them are hardly worth maintaining. The same may be said of
Aristida depressa, an extreme form completely intergrading with
Aristida adscensionis. The distinction between annuals and perennials in the tropics and subtropics is not always very clear and often appears to be a facultative difference of little taxonomic consequence. This is particularly true in
Aristida adscensionis where the separation of perennial plants as
Aristida caerulescens cannot be justified. Indeed, perennial plants, otherwise indistinguishable from typical var.
ehrenbergii are seen in the Middle East.
Six-weeks Tripleawn (a North American name) is probably grazed by cattle, but nothing more definite about its economic value in Pakistan seems to be known.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Comments
(
Inglês
)
fornecido por eFloras
Aristida adscensionis is a widely distributed, variable, annual pioneer of dry, open places, recognized by its long, parallel-sided, flattened lemma often exserted from the glumes. It is used for forage.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
Inglês
)
fornecido por eFloras
Annual. Culms tufted, erect or geniculate at base, 15–55 cm tall, branched. Leaf sheaths smooth, glabrous, shorter than internodes, laxly overlapping; leaf blades involute, 3–20 cm, finely pointed; ligule ca. 0.5 mm. Panicle usually narrow, loosely contracted, 4–20 cm; branches short, ascending, inserted singly on main axis. Spikelets gray-green or purplish green; glumes subequal or unequal with upper longer, 1-veined, scabrid on vein, lower glume lanceolate-oblong, 4–6.8 mm, acute, upper glume linear, 5–8 mm, obtuse to emarginate or apiculate; callus ca. 0.5 mm, narrowly obtuse; lemma linear, distinctly longer than upper glume, 7–11 mm, laterally compressed, smooth or rarely scabrid in upper half, keel scabrid upward; awn branches arising directly from lemma apex, central branch 1–2.5 cm, laterals slightly shorter. Anthers 1.8–2 mm. Fl. and fr. Jun–Oct.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
Inglês
)
fornecido por eFloras
Annual or short-lived perennial, forming erect or sprawling tufts 10-100 cm high. Leaf-blades linear, up to 20 cm long and 3 mm wide, expanded or folded. Panicle up to 30 cm long, occasionally lax, usually ± contracted about the main branches, sometimes narrow and dense. Spikelets pallid, green or purple; glumes unequal, linear-lanceolate to lanceolate, scaberulous on the keel, emarginate and mucronate or acute but never awned, the upper 5-10 mm long, the lower 1-3 mm shorter; lemma 5-13(17) mm long, sometimes no longer than the glumes but usually exceeding the upper by 1-2 mm or more, laterally compressed, convolute, scabrid on the keel or sometimes generally scaberulous on the upper part, passing into the awn without constriction or articulation; callus narrowly oblong, 0.5 mm long, obtuse; central branch of the awn 7-25 mm long, the laterals subequal or occasionally conspicuously shorter.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
Inglês
)
fornecido por eFloras
Gansu, Hebei, Nei Mongol, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Yunnan [tropical and warm-temperate regions of the world].
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
Inglês
)
fornecido por eFloras
Distribution: Pakistan (Sind, Baluchistan, Punjab, N.W.F.P., Gilgit & Kashmir); throughout the tropics.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
(
Inglês
)
fornecido por eFloras
Dry mountain slopes, rocky fissures, and along river banks; 200–1800 m.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
Inglês
)
fornecido por eFloras
Aristida adscensionis var. vulpioides (Hance) Hackel ex Henrard; A. heymannii Regel; A. vulgaris Trinius & Ruprecht; A. vulpioides Hance; Chaetaria adscensionis (Linnaeus) P. Beauvois.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Physical Description
(
Inglês
)
fornecido por USDA PLANTS text
Annuals, Terrestrial, not aquatic, Rhizomes present, Rhizome short and compact, stems close, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stems branching above base or distally at nodes, Stem internodes solid or spongy, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, 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 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, Leaf blades more or less hairy, Ligul e present, Ligule a fringe of hairs, 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, Flowers bisexual, Spikelets pedicellate, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, 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 distinctly unequal, Glumes shorter than adjacent lemma, Glumes equal to or longer than adjacent lemma, Glumes 1 nerved, Lemma coriaceous, firmer or thicker in texture than the glumes, Lemma 3 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma distinctly awned, more than 2-3 mm, Lemma with 3 awns, Lemma awns about equal in length, Lemma awn 1-2 cm long, Lemma awn 2-4 cm long or longer, Lemma awned from tip, Lemma awns straight or curved to base, Lemma awn once geniculate, bent once, Lemma margins inrolled, tightly covering palea and caryopsis, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea present, well developed, Palea membranous, hyaline, Palea shorter than 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.
Aristida adscensionis: Brief Summary
(
Inglês
)
fornecido por wikipedia EN
Aristida adscensionis is a species of grass known by the common name sixweeks threeawn. It is native to the Americas but it is distributed nearly worldwide. It grows easily in disturbed and waste areas and has potential to become a weed.
- licença
- cc-by-sa-3.0
- direitos autorais
- Wikipedia authors and editors
Aristida adscensionis
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
Aristida adscensionis es una especie de planta herbácea perteneciente a la familia de las poáceas. Es nativa de las Américas, y se distribuye por casi todo el mundo. Crece fácilmente en áreas perturbadas y desechadas y tiene potencial para convertirse en una maleza.
Descripción
Es una planta anual tussok que es bastante variable en apariencia, ya que su tamaño y forma está determinado en gran medida por las condiciones ambientales. Crece alcanzando una altura de entre 5 y 80 centímetros. Forma una estrecha inflorescencia de espiguillas, cada fruta con tres aristas .
Los tallos de 1–8 dm de alto, son erectos o decumbentes, ramificados desde los nudos inferiores, glabros. Las hojas caulinares, rectas; vainas glabras; láminas hasta 25 cm de largo y 1 mm de ancho, generalmente involutas, puberulentas en la haz. Panícula angosta, 5–15 cm de largo, densa, ramas generalmente adpresas, escabriúsculas, con espiguillas hasta la base; pedicelos adpresos, las espiguillas agrupadas; glumas 1-nervias, escabrosas en la quilla, la inferior 4.5–6 mm de largo, la superior 6–9 mm de largo; lema 6–9 mm de largo, convoluta, escabrosa hacia el ápice; columna ausente; aristas 3, 6–16 mm de largo, aplanadas, la central ligeramente más larga que las laterales, recta o divergente, las laterales rectas; callo 0.3–0.4 mm de largo, obtuso, piloso, los tricomas de 0.6–1 mm de largo; anteras 1 o 3, 0.8–1.5 mm de largo.[1]
Taxonomía
Aristida adscensionis fue descrita por Carlos Linneo y publicado en Species Plantarum 1: 82. 1753.[1]
- Citología
Número de cromosomas de Aristida adscensionis (Fam. Gramineae) y táxones infraespecíficos: n=11[2]
- Etimología
El nombre del género proviene del latín Arista o del griego Aristos (cerdas, o aristas del maíz).
adscensionis: epíteto
- Sinonimia
-
Aristida abyssinica (Trin. & Rupr.) Henrard
-
Aristida aethiopica (Trin. & Rupr.) Trin. & Rupr. ex Henrard
-
Aristida arabica Trin. & Rupr.
-
Aristida bromoides Kunth
-
Aristida canariensis Willd.
-
Aristida cardosoi Cout.
-
Aristida coarctata Kunth
-
Aristida confusa (Trin. & Rupr.) Trin. & Rupr. ex Henrard
-
Aristida curvata (Nees) Nees ex A.Rich.
-
Aristida debilis Mez
- Aristida depressa Retz.
-
Aristida ehrenbergii Trin. & Rupr.
-
Aristida elatior Cav.
-
Aristida fasciculata Torr.
-
Aristida festucoides Poir.
-
Aristida gigantea L.f.
-
Aristida grisebachiana E.Fourn.
-
Aristida guineensis Trin. & Rupr.
-
Aristida heymannii Regel
-
Aristida humilis Kunth
-
Aristida interrupta Cav.
-
Aristida laxa Willd. ex Trin. & Rupr.
-
Aristida luzoniensis Cav.
-
Aristida macrochloa Hochst.
-
Aristida maritima Steud.
-
Aristida mauritiana Kunth
-
Aristida mauritiana Hochst. ex A.Rich.
-
Aristida modatica Steud.
-
Aristida mongholica Trin.
-
Aristida nana Steud.
-
Aristida nigrescens J.Presl
-
Aristida nutans Steud.
-
Aristida paniculata Forssk.
-
Aristida peruviana Beetle
-
Aristida pumila Decne.
-
Aristida pusilla Trin. & Rupr.
-
Aristida pygmaea Trin. & Rupr.
-
Aristida racemosa Spreng.
-
Aristida schaffneri E.Fourn.
-
Aristida senegalensis (Trin. & Rupr.) Henrard
-
Aristida setacea Steud.
-
Aristida simplicissima Steud.
-
Aristida spicigera Trin. & Rupr.
-
Aristida strictiflora Trin. & Rupr.
-
Aristida submucronata Schumach. & Thonn.
-
Aristida swartziana Steud.
-
Aristida teneriffae Steud.
-
Aristida thonningii Trin. & Rupr.
-
Aristida viciosorum Pau
-
Aristida vulgaris Trin. & Rupr.
-
Aristida vulpioides Hance
-
Chaetaria adscensionis (L.) P.Beauv.
-
Chaetaria bromoides (Kunth) Roem. & Schult.
-
Chaetaria canariensis (Willd.) P.Beauv.
-
Chaetaria coarctata (Kunth) Roem. & Schult.
-
Chaetaria coerulescens (Desf.) P.Beauv.
-
Chaetaria curvata Nees
-
Chaetaria depressa (Retz.) P.Beauv.
-
Chaetaria elatior (Cav.) P.Beauv.
-
Chaetaria fasciculata (Torr.) Schult. & Schult.f.
-
Chaetaria festucoides (Poir.) P.Beauv.
-
Chaetaria forskolii Nees
-
Chaetaria gigantea (L.f.) P.Beauv.
-
Chaetaria humilis (Humb. & Bonpl.) Roem. & Schult.
-
Chaetaria interrupta (Cav.) P.Beauv.
-
Chaetaria luzoniensis (Cav.) P.Beauv.
-
Chaetaria mauritiana (Kunth) Nees
-
Chaetaria nana Nees ex Steud.[3]
Véase
Referencias
- licença
- cc-by-sa-3.0
- direitos autorais
- Autores y editores de Wikipedia
Aristida adscensionis: Brief Summary
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
Aristida adscensionis es una especie de planta herbácea perteneciente a la familia de las poáceas. Es nativa de las Américas, y se distribuye por casi todo el mundo. Crece fácilmente en áreas perturbadas y desechadas y tiene potencial para convertirse en una maleza.
- licença
- cc-by-sa-3.0
- direitos autorais
- Autores y editores de Wikipedia