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Smilax is a genus of about 300–350 species, found in the tropics and subtropics worldwide. [1] They are climbing flowering plants, many of which are woody and/or thorny, in the monocotyledon family Smilacaceae, native throughout the tropical and subtropical regions of the world. Common names include catbriers, greenbriers, prickly-ivys and ...
Elaeagnus pungens is a dense, branching shrub which can reach over 7 metres (23 ft) tall by 4 metres (13 ft) wide. It sprouts prolifically from its stem, spreading out and twining into adjacent vegetation. Parts of the stem are covered in thorns which can be up to 8 centimetres (3.1 in) long. The evergreen, alternately-arranged leaves are up to ...
Smilax sprengelii Kunth. Smilax rotundifolia, also known as roundleaf greenbrier[2] or common greenbrier, is a woody vine native to the southeastern and eastern United States and eastern Canada. [1][3][4] It is a common and conspicuous part of the natural forest ecosystems in much of its native range. The leaves are glossy green, petioled ...
Pyracantha (from Greek pyr "fire" and akanthos "thorn", hence firethorn) [1] is a genus of large, thorny evergreen shrubs in the family Rosaceae, with common names firethorn or pyracantha. They are native to an area extending from Southwest Europe east to Southeast Asia. They resemble and are related to Cotoneaster, but have serrated leaf ...
E. milii. Binomial name. Euphorbia milii. Des Moul. 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 species name commemorates Baron Milius, once Governor of Réunion, who introduced the species to France in 1821.
Prickles and thorns are an evolved defense against herbivores — animals that eat plants — and can also aid in growth, plant competition and water retention, according to the study.
Close-up of the flowers of C. monogyna. Crataegus species are shrubs or small trees, mostly growing to 5–15 m (15–50 ft) tall, [ 9 ] with small pome fruit and (usually) thorny branches. The most common type of bark is smooth grey in young individuals, developing shallow longitudinal fissures with narrow ridges in older trees.
Elaeagnus angustifolia is a thorny tree growing to 35 feet (11 metres) in height. [6] Its stems, buds, and leaves have a dense covering of silvery to rusty scales. The leaves are alternate, lanceolate, 4–9 centimetres (– inches) long and 1–2.5 cm (–1 in) broad, with a smooth margin. The plants begin to flower and fruit from 3 years old.