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Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
Euphorbia tithymaloides has a large number of household names used by gardeners and the public. Among them are redbird flower, [7] devil's-backbone, [8] redbird cactus, Jewbush, buck-thorn, cimora misha, Christmas candle, fiddle flower, ipecacuahana, Jacob's ladder, Japanese poinsettia, Jew's slipper, milk-hedge, myrtle-leaved spurge, Padus-leaved clipper plant, red slipper spurge, slipper ...
The Chorizanthe rigida plant, is a short, erect and sometimes single-stalked, but multi-stalked to 5 stalks or more, 2.5-2.5–6.0 inches (1–2 dm) in height. It grows quickly, especially following spring rains. With the onset of early summer it turns into a spine-skeleton.
The number of vertebrae in a region can vary but overall the number remains the same. In a human spinal column, there are normally 33 vertebrae. [3] The upper 24 pre-sacral vertebrae are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone.
Chorizanthe is a genus of plants in the buckwheat family known generally as spineflowers. These are small, squat, herbaceous plants with spiny-looking inflorescences of flowers. The flowers may be in shades of red or yellow to white.
Collectively, opuntias, chollas, and related plants are sometimes called opuntiads. [2] The roughly 35 species of Cylindropuntia are native to the southwestern and south-central United States, Mexico, and the West Indies. The Flora of North America recognizes 22 species. [3]
The species name is taken from the Latin words spina meaning thorn or spine and escens meaning beginning. The name refers to the branches ending with a sharp point or spine. [1] The species was named by George Bentham in 1842 as part of the William Jackson Hooker work Notes on Mimoseae, with a synopsis of species published in the London Journal ...
This view of the cactus Mammillaria marksiana shows its pattern of prominent tubercles, with the spines emanating from each tubercle's tip.. In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal.