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Fossil conifers included many diverse forms, the most dramatically distinct from modern conifers being some herbaceous conifers with no woody stems. [6] Major fossil orders of conifers or conifer-like plants include the Cordaitales, Vojnovskyales, Voltziales and perhaps also the Czekanowskiales (possibly more closely related to the Ginkgophyta).
The Pinaceae (/ p ɪ ˈ n eɪ s iː ˌ iː,-s i ˌ aɪ /), or pine family, are conifer trees or shrubs, including many of the well-known conifers of commercial importance such as cedars, firs, hemlocks, piñons, larches, pines and spruces. The family is included in the order Pinales, formerly known as Coniferales.
A: Late winter or early spring is generally the best time to prune conifers (needled evergreens) such as arborvitae, but these plants do not respond well to heavy pruning at any time of the year.
Caribbean copper plant Euphorbiaceae (spurge family) Euphorbia ingens: candelabra tree Euphorbiaceae (spurge family) Euphorbia tetragona: naboom Euphorbiaceae (spurge family) Euphorbia tirucalli: pencil spurge Euphorbiaceae (spurge family) Gymnanthes: gymnanthes trees; Gymnanthes lucida: crabwood Euphorbiaceae (spurge family) Hevea: rubber ...
Podocarpus (/ ˌ p oʊ d ə ˈ k ɑːr p ə s / [2]) is a genus of conifers, the most numerous and widely distributed of the podocarp family, the Podocarpaceae. Podocarpus species are evergreen shrubs or trees, usually from 1 to 25 m (3 to 82 ft) tall, known to reach 40 m (130 ft) at times.
The plant Buxus sempervirens has been well investigated chemically. During late 1980s, Dildar Ahmed while working on his PhD thesis under the supervision of Prof Atta-ur-Rahman, isolated a number of steroidal alkaloids from the leaves of the plant. A new system of nomenclature for buxus alkaloids was also proposed based on buxane nucleus.
Taxus is a genus of coniferous trees or shrubs known as yews in the family Taxaceae. [1] Yews occur around the globe in temperate zones of the northern hemisphere, northernmost in Norway and southernmost in the South Celebes. Some populations exist in tropical highlands. [2] The oldest known fossil species are from the Early Cretaceous. [3]
Some species develop flattened, spreading heads at maturity, while certain variants may manifest as shrubs, standing at less than 6 metres (20 ft). The bark of cypress trees varies, with some species having smooth surfaces, while most exhibit bark that separates into thin plates or strips, often shedding over time. Leaves of young cypress trees ...