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Xanthium spinosum (also known as Acanthoxanthium spinosum) is a species of flowering plant in the aster family known by many common names, including spiny cocklebur, prickly burweed and Bathurst burr.
In English it is known as the prickly, spiny, or thorny burnet [4] It is a perennial bush with small flowers in inflorescence. Sarcopoterium spinosum flowers in February to April and its fruits mature in autumn, then fall to earth to germinate with the rain water. Sarcopoterium spinosum has spines. In the summer (high temperatures) it is dry ...
Chorizanthe rigida, with the common names of devil's spineflower, rigid spineflower, spiny-herb, rigid spiny-herb, is an annual plant in the family Polygonaceae the buckwheats. It is a member of the genus Chorizanthe , the spineflowers and is found in the southwestern United States and northwest Mexico, in the states of California , Nevada ...
The pistillate heads consist of two pistillate flowers surrounded by a spiny involucre. Upon fruiting, these two flowers ripen into two brown to black achenes and they are completely enveloped by the involucre, which becomes a bur. The bur, being buoyant, easily disperses in the water for plants growing along waterways.
Bossiaea obcordata is an erect, rigid shrub that typically grows to a height of up to 1.5 m (4 ft 11 in) and has flattened branchlets that become spiny with age. The leaves are arranged alternately along the stems, broadly egg-shaped to heart-shaped with the narrower end towards the base, sometimes almost round, 30–60 mm (1.2–2.4 in) long and wide on a petiole 0.5–1.5 mm (0.020–0.059 ...
Pimelea spinescens, commonly known as plains rice-flower, spiny rice-flower or prickly pimelea, [1] is a species of flowering plant in the family Thymelaeaceae and is endemic to Victoria. It is a spreading undershrub with elliptic leaves arranged in opposite pairs, and heads of white, cream-coloured or yellow flowers surrounded by 4 elliptic ...
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Chloracantha is a monotypic genus of flowering plants in the aster family, containing the single species Chloracantha spinosa.It is distributed in the southwestern and south-central United States (CA NV AZ UT NM TX OK LA), [2] most of Mexico, and much of Central America. [3]