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Trees in this genus are either deciduous or evergreen. Certain species, namely H. benthamiana , H. brasiliensis and H. microphylla , bear "winter shoots", stubby side shoots with short internodes, scale leaves on the stem and larger leaves near the tip; on these, the leaves are shed leaving the tree bare before new shoots develop. [ 7 ]
Euphorbia as a small tree: Euphorbia dendroides. Euphorbia is a large and diverse genus of flowering plants, commonly called spurge, in the family Euphorbiaceae. Euphorbias range from tiny annual plants to large and long-lived trees, [2] with perhaps the tallest being Euphorbia ampliphylla at 30 m (98 ft) or more.
Euphorbia characias flowers. Euphorbiaceae (/ j uː ˈ f oʊ r b iː ˌ eɪ s i ˌ aɪ,-s iː ˌ iː /), the spurge family, is a large family of flowering plants.In English, they are also commonly called euphorbias, [2] which is also the name of the type genus of the family.
Euphorbia caducifolia forms a dense, branching bush up to 3 m (10 ft) high and 10 m (33 ft) in diameter. The succulent stems branch frequently and tend to grow vertically. It has small oval leaves some 2.5 to 8 cm (1 to 3 in) long and 2.5 cm (1 in) wide, but these soon fall. Spines on the stipules are up to 1 cm (0.4 in) long.
Hevea naturally produces a latex substance which can tapped by cutting into the tree, and the latex can then be processed into rubber. Most hydrocarbon plants are not trees, so this technique of tapping the tree is no longer feasible. Instead of tapping the tree, the hydrocarbons are extracted using various organic solvents.
Two trees may grow to their mature size adjacent to each other and seemingly grow together or conjoin, demonstrating inosculation. These may be of the same species or even of different genera or families, depending on whether the two trees have become truly grafted together (once the cambium of two trees touches, they self-graft and grow together).
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 ...
Euphorbia cotinifolia is a broadleaf red shrub native to Mexico and South America. Treated as a shrub, it reaches 10 to 15 ft (3.0 to 4.6 m) but can be grown as a tree reaching 30 ft (9.1 m). Small white flowers with creamy bracts bloom at the ends of the branches in summer. The purplish stems, when broken, exude a sap that is a skin irritant. [1]