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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.
Momordica tuberosa Dennst. Momordica dioica, commonly known as spiny gourd or spine gourd[ 2 ] or teasle gourd and also known as bristly balsam pear, [ 3 ] is a species of flowering plant in the Cucurbitaceae/gourd family. It is propagated by underground tubers. It has small leaves, small yellow flowers, it has small, dark green, round or oval ...
Many species of cactus have long, sharp spines, like this Opuntia. A cactus (pl.: cacti, cactuses, or less commonly, cactus) [3] is a member of the plant family Cactaceae (/ kækˈteɪsi.iː, - ˌaɪ /), [a] a family comprising about 127 genera with some 1,750 known species of the order Caryophyllales. [4] The word cactus derives, through Latin ...
Tithymalus tithymaloides(L.) Croizat. Euphorbia tithymaloides is a perennial succulent spurge. [ 3 ] An erect shrub, [ 4 ] the plant is also known by the scientific name Pedilanthus tithymaloides. However, the genus Pedilanthus has been subsumed into the genus Euphorbia, and is more correctly known by its new name (Euphorbia tithymaloides). [ 5 ...
Stipule. In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole). Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many species they may be inconspicuous —or sometimes entirely absent, and the leaf is then termed ...
Other common names for this plant include black-spined pricklypear, long-spine prickly pear, purple pricklypear, and redeye prickly pear. [2] Opuntia macrocentra is an upright spreading shrub consisting of several joined segments called pads. This cactus produces large colorful yellow and red flowers and dark red edible fruits.
Ziziphus spina-christi, known as the Christ's thorn jujube, is an evergreen tree or plant native to the Levant, East Africa, and Mesopotamia. [3] Fruit and leaves from the tree were used in preparing ancient Egyptian foods, in cultural practices, and in skincare routines - especially with qasil powder derived from the Ziziphus spina-christi tree leaves.
Juncus acutus, the spiny rush, sharp rush or sharp-pointed rush, is a flowering plant in the monocot family Juncaceae.It is native to the Americas, Northern and Southern Africa, Western and Southern Europe and West Asia, and is found in a variety of wet habitats, such as bogs, fens, meadows, and salt marshes, [2] and along the edges of ponds and lakes.