Galeopsis

About: Galeopsis is a research topic. Over the lifetime, 40 publications have been published within this topic receiving 503 citations.

Additional Cases of Defensive Visual Batesian Mimicry Among Plants

Abstract: Leaf shape is known to partly explain herbivorous insect richness on various plant taxa (Jones and Lawton 1991), and this is probably related to more than one mechanism. The little known, and even less tested visual Batesian leaf mimicry will be briefly discussed in this short chapter. Shimshi (1979/1980) proposed that the hill ecotype of Iris atrofusca from the heavily grazed desert/steppe transition zone in Israel with its erect (ensiform) leaves that differ from the regular curved (falcate) leaves of the common type in other ecosystems is a mimic of the poisonous common geophyte Asphodelus ramosus (= A. microcarpus) of the Liliaceae that grows in the same habitat, which is not grazed in the winter and spring because of toxicity (Seligman et al. 1959). Brown and Lawton (1991) postulated that the two non-spiny species Celmisia lyalli and C. petriei (Asteraceae) growing in New Zealand look rather like spiny members of the genus Aciphylla (Apiaceae). Brown and Lawton (1991) also described the close resemblance of general plant morphology and leaf shape of the European white dead-nettle (Lamium album) to the well-defended stinging nettle (Urtica dioica) as a case of Batesian mimicry. This nettle mimic and other species that visually mimic nettle (Lamium purpureum, Lamiastrum galeobdolon, Ballota nigra, Galeopsis tetrahit and other Galeopsis species) are named dead nettles because they lack the stings of stinging nettle (Wheeler 2004). Interestingly, in November 2015, a group of my first-year biology students wrongly identified a Ballota saxatilis plant growing on Mount Carmel, Israel as nettle during a field class when they had to collect and identify several plant species. Recently, morphological Batesian mimicry was proposed to exist between the chemically defended leaves of the model Pseudowintera colorata by the leaves of the non-defended Alseuosmia pusilla, two species from New Zealand (Yager et al. 2016). Yager et al. (2016) showed that these two species had leaves that were morphologically distinct from all neighboring species, and that A. pusilla individuals were more similar to neighboring than to distant P. colorata plants. Moreover, 90 % of the leaf shape variation in these two species varied similarly across an altitudinal gradient. These authors used a quantitative geometric morphometric approach that allows for comparisons based on actual values and not only on general visual similarity. This is expected to allow better quantitative critera for mimicry and for comparative studies on the strength of evolution in cases of visual mimicry. These few examples probably reflect a much broader phenomenon, partly discussed above, for instance when mimicry of host leaf shape by mistletoes was described. These few examples probably reflect a much broader phenomenon, partly discussed above, for instance when mimicry of host leaf shape by mistletoes was described.

Vegetable extract to prevent and treat hair loss

Abstract: The present invention relates to the use of a plant extract from the genus Galeopsis species tetrahit or a composition that contains it to stimulate hair growth or improve the appearance or hair fullness. The composition containing the plant extract is applied in both cosmetic and medical-trichological fields and can be applied topically on the scalp or administered orally.

Видовой состав, численность и Биомасса сорных растений в зерновых агрофитоценозах Северной лесостепи Тюменской области

Abstract: In article the characteristic of specific composition and quantity of weed plants in the agrofitocenosis of grain crops of the northern forest-steppe of the Tyumen region, and also an assessment of competitiveness of varieties of grain crops in the conditions of a contamination is given. It is noted that for years of researches in the agrofitocenosis of varieties of grain crops 20 species of weed plants which were presented by ecological groups met: mezofita, mezokserofita, gigromezofita, mezogigrofita. On quantity from group of spring early weed plants Galeopsis tetrachit, spring late – Amaranthus retroflexus, Echinochloa crusgalli, wintering – Erodium cicutarium, perennial – Sonchus arvensis prevailed. The greatest quantity of weed plants is noted in the agrofitocenosis of varieties of barley, and the smallest – at oats varieties. In the agrofitocenosis of a spring wheat the greatest competitiveness in the conditions of a contamination characterizes variety Aviada, barley – a sample G-19837, oats – a variety Megion.

Consumption Survey of Justicia Galeopsis T. Anderson Ex C.B. Clarke (Acanthaceae) a Wild Food Plant in Côte d’Ivoire (West Africa)

Abstract: The aim of this study was to evaluate the level of knowledge and consumption of Justicia galeopsis, a wild food plant, in Abengourou (Cote d’Ivoire). A survey of food consumption has been conducted among the populations and 100 persons have been interviewed. The data revealed that they all have already consumed J. galeopsis leaves. The main reasons of J. galeopsisleaves consumption refer to nutritional value and flavor. There were always cooking before eating and associated mainly with groundnuts (95%) or gumbo (5%). Twenty-seven percent of consumers every day eat J. galeopsis leaves against 64% who consume once or twice a week, 6% twice a month, 3% occasionally. 6% the populations collected these leaves in the market against 94% who obtained them from their field which is far from the village. Although the fields were far from the village, 74% of population prepares J. galeopsis just after the collect without conservation. The cooking time of leaves associated with peanuts or okra is estimated by 41% of the households at 30 minutes. Five percent prepared them during 45 minutes and 22% during one (1) hour. This study reveals that J. galeopsis is a famous plant in Abengourou. Its leaves are greatly appreciated by all populations studied.

Synergistic herbicidal compositions and methods for application thereof

Abstract: The present invention provides a method for the synergistic control of undesirable plants such as Polygonum, Kochia, Galeopsis, Stelaria and Avena which comprises applying to the plants or their locus a synergistically effective amount of an aryloxypicolinamide herbicide in combination with one or two selected additional herbicidal compounds. Further provided is synergistic herbicidal derivative comprising an aryloxypicolinamide herbicide and one or two selected additional herbicidal compounds.