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Species
Dactyloctenium aegyptium (L.) Willd.
IUCN
NCBI
EOL Text
Spreading annual grass, rooting from the knee-bent lower nodes. Inflorescences digitate, often in thick radiating racemes with bristly spikelets.
Inflorescence of 2-7, usually 4, stout digitate spikes. Spikelets usually 3-flowered, 3-4 mm long; glumes keeled, the keel hirsute, 1-nerved; lower glume with an awn of 1-2 mm long, semi-ovate in side view, pointed, about 2.5 mm long, upper glume as long as the lower glume, with a slightly curved strong awn of about 1 mm long; lemma keeled, pointed, oblong-ovate in side view, 3 mm long, 3-nerved, lateral nerves close to the margins; anthers 3, about 0.5 mm long. Utricles globose, rugose, about 1 mm long.
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Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1050&taxon_id=200025115 |
Fl. & Fr. Per. July-October.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=200025115 |
aegyptium: of Egypt
"Annuals. Culms 30-60 cm long, creeping or geniculately ascending, rooting at the nodes; nodes glabrous. Leaves 5-20 x 0.3-0.6 cm, linear, rounded or shallowly cordate at base, acuminate, margins at base ciliate; sheaths to 5 cm long, keeled; ligules ovate, fimbriate, membranous. Spikes 2-6, digitate, each 2-5 cm long, oblong. Spikelets sessile, 2-3.5 mm long, ovate or oblong, 3-4-flowered, laterally compressed, densely imbricate, in 2 rows. Lower glume 1.5-2 x 1-1.5 mm, boat-shaped or ovate-acute when spread, keeled; keel scabrid. Upper glume 1.5-2 x 1-1.5 mm, ovate-elliptic or obovate, aristate, keeled; keel scabrid; arista c. 1.5 mm long, geniculate. Lemmas 1.5-3 x 1-1.5 mm, ovate, aristate; arista c. 1 mm long. Palea 1-1.5 x 1 mm, ovate-lanceolate, acuminate. Stamens 3; anthers c. 0.5 mm long. Grain c. 1 mm long, obovate or triangular, transversely rugose."
4.7 Longevidad
Perenne (Beetle et al., 1987).
License | http://creativecommons.org/licenses/by-nc-sa/2.5/ |
Rights holder/Author | CONABIO |
Source | No source database. |
Flowering class: Monocot Habit: Herb Distribution notes: Exotic
Cynosurus aegyptius L., Sp. Pl. 72. 1753.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1050&taxon_id=200025115 |
Annual.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
Source | http://lifedesk.bibalex.org/ba/pages/2631 |
1.1 Descripción de la especie
Culmos delgados o robustos, moderadamente divergentes, hasta de 1 m de alto, casi siempre geniculadamente ascendentes y con raíces en los nudos inferiores, con frecuencia con estolones cortos y cespitosos y ocasionalmente erectos. Vainas comprimidas lateralmente y aquilladas. Lígulas una membrana truncada de 0.5 mm. Láminas planas de 3 a 25 cm de largo por 2.5 a 7.5 mm de ancho, con pelos papilosos especialmente a lo largo de los márgenes. Inflorescencia una panícula con las ramificaciones primarias espigadas, con 1 a 9 ramificaciones, de lineares a angostamente oblongas, de 1.2 a 6.5 cm de largo, ascendentes o con frecuencia radiadas horizontalmente desde el ápice del culmo. Espiguillas de 3 a 4 flósculos, ovados de 2.5 a 4.5 mm de largo. Glumas subiguales de 1.5 a 2.2 mm de largo, la primera lanceolada en perfil con una quilla gruesa escabrosa, la segunda elíptica a angostamente obovada en perfil, la quilla lisa prolongada en una arista firme, de ½ a 2 veces el largo de la gluma. Lemas de angostamente ovada a ovada en perfil, de 2.6 a 4 mm de largo, quilla gibosa, escabrosa sobre la porción media y con frecuencia prolongada en una punta o mucrón firme hasta de 1 mm de largo. Páleas con quillas aladas o no; anteras de 0.25 a 0.8 mm de largo. Cariópsis de casi 1 mm de largo, de obovado a obtriangular en perfil y transversalmente rugoso. Flores lodículas 2 truncadas, estambres 3, Anteras de 0.5 o menos de long., estilos 2 (Beetle, et al., 1987; Gould, 1975; Davidse, et al., 1994).
License | http://creativecommons.org/licenses/by-nc-sa/2.5/ |
Rights holder/Author | CONABIO |
Source | No source database. |