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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 perennial plant grows from a massive rhizome system which may extend over 1.8 metres (6 ft) into the ground. New shoots can appear over 6 m (20 ft) from the parent plant. Above the ground, the plant grows up to 0.9 metres (3 ft) tall. [3] It is a heavily branched, gray-green thicket with long spines along the branches.
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 milii, the crown-of-thorns, Christ plant or Christ's thorn, is a species of flowering plant in the spurge family, Euphorbiaceae, native to Madagascar. The specifies commemorates Baron Milius , once Governor of Réunion, who introduced the species to France in 1821.
Elaeagnus pungens is a species of flowering plant in the family Elaeagnaceae, known by the common names thorny olive, [1] spiny oleaster [2] and silverthorn; also by the family name "oleaster". It is native to Asia, including China and Japan.
B. decapetala is as a robust, thorny, evergreen shrub 2–4 m (6.6–13.1 ft) high or climber up to 10 m (33 ft) or higher; often forming dense thickets; the stems are covered with minute golden hair; the stem thorns are straight to hooked, numerous, and not in regular rows or confined to nodes.
Ziziphus obtusifolia is a shrub with many branches forming a thorny tangle which may exceed 3 metres (9.8 ft) tall and approach 4 metres (13 ft) at times.. The leaves are deciduous and are absent for much of the year, leaving the shrub a naked thicket of gray twigs coated in waxy whitish hairs.
Vachellia seyal bark Flower. Vachellia seyal, the red acacia, known also as the shittah tree (the source of shittim wood), is a thorny, 6– to 10-m-high (20 to 30 ft) tree with a pale greenish or reddish bark.