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Delphinium geyeri is a species of plant in the Ranunculaceae family that is often called by the common names plains larkspur and foothills larkspur. It is infamous for causing the deaths of cattle grazing in the spring because it is especially poisonous before it flowers and so it is also called poisonweed by ranchers. It is a medium to tall ...
All parts of these plants are considered toxic to humans, especially the younger parts, [2] causing severe digestive discomfort if ingested, and skin irritation. [ 2 ] [ 3 ] [ 10 ] [ 64 ] Larkspur, especially tall larkspur, is a significant cause of cattle poisoning on rangelands in the western United States. [ 65 ]
Delphinium trolliifolium is a species of larkspur known by the common names poison delphinium, cow poison, and Columbian larkspur. It is native to Washington, Oregon, and northern California. [1] This wildflower reaches one half to just over one meter in height. It has large, shiny, deeply lobed leaves.
The Cuyamaca larkspur (ssp. cuyamacae) is native to the Peninsular Ranges, occurring near Cuyamaca Lake and possibly Palomar Mountain in San Diego County. [1] The ssp. hesperium is native to the North Coast Ranges. [2] The pale-flowered western larkspur (ssp. pallescens), which has white, pink, or light blue sepals, occurs in the Coast Ranges. [3]
Delphinium nudicaule, known by the common names canyon larkspur, red larkspur, orange larkspur, and canyon delphinium, is a flowering herbaceous perennial plant in the buttercup family Ranunculaceae. It is native to low-elevation canyons and slopes, foothills, and mountain ranges of California, US, from the Sierra Nevada to the California Coast ...
Delphinium tricorne, known by the common names dwarf larkspur [1] or spring larkspur, [2] is a species of flowering plant in the Ranunculaceae (buttercup) family. It is native to the central and eastern United States, where it is the most common Delphinium found.
Delphinium grandiflorum is a species of Delphinium known by the common names Siberian larkspur and Chinese delphinium. It is native to Russia and China. There are several popular cultivars in several colours which are grown as ornamental plants, including 'Blue Butterfly', 'Summer Morning', 'Blue Mirror', and 'Summer Stars'. Like many other ...
Delphinium glareosum (common names include Olympic Mountain larkspur and rockslide larkspur [2]) is a species of larkspur which grows in Oregon, Washington, and British Columbia. [3] It is in the Ranunculaceae (buttercup family). These plants favor rocky slopes. They flower in summer. Like all members of the genus Delphinium, rockslide larkspur ...