Code
PASDIGrowth form
grassBiological cycle
vivaciousHabitat
terrestrial
synonym | Digitaria dilatata (Poir.) Coste |
synonym | Panicum platense (Spreng.) Kuntze |
synonym | Paspalum dilatatum f. paucispica Hack., nom. nud. |
synonym | Paspalum dilatatum subsp. dilatatum |
synonym | Paspalum dilatatum subsp. flavescens Roseng., B.R.Arrill. & Izag. |
synonym | Paspalum dilatatum var. decumbens Vasey |
synonym | Paspalum dilatatum var. sacchariferum Arechav. |
synonym | Paspalum eriophorum Schult. & Schult.f. |
synonym | Paspalum lanatum Spreng. [Illegitimate] |
synonym | Paspalum lanatum Spreng., nom. illeg. |
synonym | Paspalum moluccanum Huber [Illegitimate] |
synonym | Paspalum moluccanum Huber, nom. superfl. |
synonym | Paspalum ovatum Nees ex Trin. [Illegitimate] |
synonym | Paspalum ovatum Nees ex Trin., nom. superfl. |
synonym | Paspalum ovatum var. grandiflorum Nees |
synonym | Paspalum ovatum var. ovatum |
synonym | Paspalum pedunculare J.Presl |
synonym | Paspalum platense Spreng. |
synonym | Paspalum selloi Spreng. ex Nees [Invalid] |
synonym | Paspalum selloi Spreng. ex Nees, pro syn. |
Afrikaans |
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Anglais / English |
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Créole Maurice |
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Créole Réunion |
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Français / French |
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Malgache |
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Global description
Paspalum dilatatum is a vivacious grass with stolons that forms large clumps, 50 cm to 1.5 m high. Its stems and leaves grow straight and reach over a meter in height. Its soft leaves have a prominent midrib, and small hairs can cover the base of the lamina. The panicle consists of 3 to 5 racemes.
First leaves
The first leaves have rolled prefoliation, striated, glabrous and flat sheath. The lamina is lanceolate, acuminate, light green in colour, 2 to 5 times longer than wide, more or less hairy leaf. The membranous ligule is serrated, with the lamina non auriculated at the base.
General habit
Tufted grass, whose stem are erect and not hairy and rampant strain. It reaches 40 to 170 cm high.
Underground system
Fibrous roots emerge from the short, thick rhizomes and from the nodes at the base of the culms.
Culm
Hollow cylindrical or slightly compressed culm. It is firstly spread, rooting at the nodes, and then becomes erect, geniculate, slightly branched. It is glabrous, with nodes having a short dense pubescence.
Leaf
The leaves are simple, alternate, long and narrow, with a smooth sheath at the top part, sometimes swollen. The lamina is 6 to 45 cm long, 3 to 12 mm wide, glabrous, smooth. The ligule is membranous, well developed 2-5 mm, and truncated. There are few isolated stiff hairs at the base of the leaf blade. The margin is scabrous.
Inflorescence
The inflorescence is very irregular, with 3 to 5 racemes spaced by 3 to 10 cm from each other at the top of the stem. The racemes are ascendants or drooping, 4 to 10 cm long and have a small tuft of stiff hairs at the insertion axis. Each raceme has a flattened axis with one side bearing the insertion beamlines of 2 spikelets.
Spikelet
The spikelets measure 2.8 to 4 mm long and wide. They are oval, pointed at the top, fringed with long silky white hairs and covered with shorter hairs on the rest of the surface. The lower glume is much reduced or absent, and the palea of the sterile flower is absent. The fertile floret is slightly longer than wide. White hairs are present on the margin of the upper glume and on the sterile lemma.
Grain
Elliptical grain, rounded, 2.5 mm long. The integument is finely streaked, brown in colour. It remains included in the spikelet during dissemination.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Paspalum dilatatum is a vivacious species that multiplies mainly by seeds, but also by the bursting tufts during cultural operations.
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Identification key for Paspalum | ||
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Ligules | Hairs at the nodes | Species |
Small < 2 mm | No | Paspalum scrobiculatum |
Yes | Paspalum paniculatum | |
Large > 2 mm | No | Paspalum dilatatum |
Yes | Paspalum urvillei |
Characters to distinguish several Paspalum species
Racemes | Raceme length |
Spikelet raws |
Spikelet size | Spikelet shape | Spikelet thickness |
Spikelet hairiness | Species |
2(3) | 1,5-7 cm | 2 | 2,6-4 mm | elliptical | flattened | glabrous | P. vaginatum |
2(3) | 1,5-9 cm | 2 | 2,5-3,5 mm | elliptical | flat/convex | barely cilited | P. distichum |
2 | 4-20 cm | 2 | 1,4-1,8 mm | suborbicular | flattened | long and silky hairs | P. conjugatum |
2-6 (15) | 2-8 cm | 2 | 1,3-3 mm | suborbicular | flat/convex | glabrous | P. scrobiculatum |
3-7 | 3-10 cm | 4 | 2,8-3,8 mm | ovale pointed | flat/convex | long and silky hairs | P. dilatatum |
6-25 | 7-14 cm | 4 | 2,2-2,7 mm | ovale lanceolate | flattened | long and silky hairs | P. urvillei |
8-50 | 4-12 cm | 4 | 1,2-1,5 mm | suborbicular | flat/convex | ciliate | P. paniculatum |
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Paspalum dilatatum can be found on roadsides and in humid areas.
Comoros: Absent.Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Origin
Paspalum dilatatum is native to South AmericaAttributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Local harmfulness
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Global control
Chemical control with herbicides (trifloxysulfuron, DSMA, MSMA, quinclorac).Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Paspalum%2520dilatatum
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Root | Root |
Kingdom | Plantae |
Phylum | Tracheophyta |
Class | Liliopsida |
Order | Poales |
Family | Poaceae |
Genus | Paspalum |
Species | Paspalum dilatatum Poir. |