Pistia


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Pistia

 

a genus of plants of the family Araceae. There is one species, the water lettuce (P. stratiotes), which is a free-floating or sometimes rooted aquatic plant with rosettes of wedge-shaped, downy, light green leaves that fold up at night. New leaf rosettes develop from the axillary buds. The flowers are unisexual and naked; they are in small spadices surrounded by a whitish spathe. In the lower part of the spathe there is one pistillate flower with several male flowers above it. (Each male flower consists of two fused stamens.) The water lettuce is found in the tropics and subtropics of both hemispheres, mainly in freshwaters. It is cultivated in fishponds and aquariums. In China the plants are used as swine feed.

References in periodicals archive ?
Respecto a la presencia de alcaloides, se observa en la tabla 7 que en el control solo da positiva la prueba cualitativa que indica presencia de alcaloides polares en la Pistia stratiotes y negativa para las tres especies respecto a alcaloides no polares.
azurea, Oxycaryum cubense, Talia multiflora, Salvinia biloba, Pistia stratiotes, Ludwigia peploides and Nymphaea prolifera.
herzogii de la Sota (Salviniaceae) y Eichhornia crassipes (Pontederiaceae) resultaron excelentes bioabsorbedores de cadmio, niquel, cobre, zinc, cromo y plomo [29, 30]; y Pistia stratiotes L.
Para el Humedal de Santa Rosa se encontraron igualmente tres comunidades (Figura 2b): Una comunidad de acuaticas flotantes dominada por Pistia stratiotes, que ocupa la mayor cantidad de los cuerpos de agua con cobertura entre 66% y 100% y dominancia alta (D=0.
The lake is very rich in floating plants and submerged water plants such as Hydrilla, Pistia, Lemma, Nelumbo mucifera, Potamageton spp.
water chestnut Trapa natans, water hyacinth Eichornia crassipes, floating fern Salvinia molesta, water lettuce Pistia stratiotes, narrow leaf cattail Typha angustifolia), but there are relatively few studies of how these species affect oxygen concentrations in shallow lakes and wetlands (but see Frodge et al.
Accumulation of trace elements by Pistia stratiotes: implications for phytoremediation.
Major weeds occurring in the lagoon yearly in December and January include the common water hyacinth Eichhornia crassipes and Cerotophyllum and Pistia sp.
Comunidad de acuaticas flotantes: Esta comunidad esta asociada a gran parte de los espejos de agua y canales de la zona; la especie predominante es el repollito de agua Pistia stratiotes, acompanado de Hydrocotyle ranunculoides, que es una hierba arrigida emergente y raramente asociada con otras especies.
Callisneria Americana, Eichhornia crassipes, Haumaniustrum robertii, Helianthusannuus, Larrea tridentate, Lemna minor, Pistia stratiotes and Thlaspi caerulescens.
ruminoides, Thalia dealbata Tropical water Nymphaea capensis, Aquatic lilies Nymphaea colorata, Nymphaea gigantea, Nymphaea lotus, and Nymphaea rubra Umbrella palm Cyperus Bog plants alternifolius Underwater Nymphoides aquatica Oxygenators banana plant Variegated Baumea rubiginosa Bog plants striped rush 'Variegata' Water arum Peltandra virginica Bog plants Water bamboo Dulichium Bog plants arundinaceum Water forget-me-not Myosotis Bog plants scorpioides Water hyacinth Eichhornia crassipes Floater Water lettuce Pistia stratioides Floater Water mint Mentha aquatica Bog plants Water plantain Alisma plantago- Bog plants aquatica Yellow floating Nymphoides peltata Oxygenators heart
Fanwort Cabomba caroliniana Floating Aquatic Species Mosquito fern Azolla caroliniana Water fern Salvinia rotundifolia Water lettuce Pistia stratiotes Duckweeds Lemna spp.