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All parts of these plants are toxic, due to the presence of alkaloids. Grazing animals, such as sheep and cattle, may be affected and human fatalities have occurred. [106] Delphinium spp. larkspur Ranunculaceae: Contains the alkaloid delsoline. Young plants and seeds are poisonous, causing nausea, muscle twitches, paralysis, and often death.
Texas bullnettle (Cnidoscolus texanus), Attwater Prairie Chicken National Wildlife Refuge, Colorado Co., TX, USA; 15 May 2013. It is a perennial plant with erect or sprawling branching stems growing from thick root stock, up to 40 inches long and 8 inches thick. It has milky latex and stiff prickly glandular-based, stinging hairs.
A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is harmful to agricultural or horticultural crops, natural habitats or ecosystems, or humans or livestock. Most noxious weeds have been introduced into an ecosystem by ignorance, mismanagement, or ...
Dermanyssus gallinae (also known as the red mite) is a haematophagous ectoparasite of poultry.It has been implicated as a vector of several major pathogenic diseases. [1] [2] Despite its common names, it has a wide range of hosts including several species of wild birds and mammals, including humans, where the condition it causes is called gamasoidosis.
The Plant List (which was last updated in 2013) classified H. maximum, H. lanatum, and H. sphondylium subsp. montanum as distinct species. [13] [14] [15] According to both the Integrated Taxonomic Information System (ITIS) or the National Plant Germplasm System (NPGS), H. lanatum and H. maximum are synonyms for H. sphondylium subsp. montanum, [16] [17] a name proposed by Brummitt in 1971.
The name Stellaria is derived from the word 'stella' meaning 'star', [16] which is a reference to the shape of its flowers; media is Latin for 'between', 'intermediate', or 'mid-sized'. [17] It is sometimes called common chickweed to distinguish it from other plants called chickweed. Other common names include chickenwort, craches, maruns, and ...
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Geese frequently consume the plant, hence the common names "goosegrass". [24] Many insects feed on it, including aphids and spittlebugs . The anthraquinone aldehyde nordamnacanthal ( 1,3-dihydroxy-anthraquinone-2-al ) present in G. aparine has an antifeedant activity against Spodoptera litura , the Oriental leafworm moth, a species which is ...