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Pereskiopsis
''Pereskiopsis'' is a genus of cactus (family (biology), family Cactaceae) in the subfamily Opuntioideae. Unlike typical cacti, it has persistent fleshy leaves. The genus name refers to its resemblance to the genus ''Pereskia''. Most species are found in Mexico south through Guatemala to Honduras, with one species in Bolivia. The incorrect spelling ''Peireskiopsis'' has also been used. Description Species of ''Pereskiopsis'' do not have the typical appearance of most cacti, including those in the subfamily Opuntioideae to which it belongs, since they have persistent fleshy leaves. They mostly have a shrubby or treelike growth habit, although some scramble or climb. Their stems have a round cross section and are not divided into segments. Their leaves are flat, succulent and generally long-lasting, and of various shapes, including elliptical and almost round. The characteristic areoles of cacti are present, and usually have glochids marking them as members of the Opuntioideae as w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pereskiopsis Aquosa 1c
''Pereskiopsis'' is a genus of cactus (family Cactaceae) in the subfamily Opuntioideae. Unlike typical cacti, it has persistent fleshy leaves. The genus name refers to its resemblance to the genus ''Pereskia''. Most species are found in Mexico south through Guatemala to Honduras, with one species in Bolivia. The incorrect spelling ''Peireskiopsis'' has also been used. Description Species of ''Pereskiopsis'' do not have the typical appearance of most cacti, including those in the subfamily Opuntioideae to which it belongs, since they have persistent fleshy leaves. They mostly have a shrubby or treelike growth habit, although some scramble or climb. Their stems have a round cross section and are not divided into segments. Their leaves are flat, succulent and generally long-lasting, and of various shapes, including elliptical and almost round. The characteristic areoles of cacti are present, and usually have glochids marking them as members of the Opuntioideae as well as needle-like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pereskiopsis Diguetii
''Pereskiopsis diguetii'', synonym ''Pereskiopsis spathulata'', is a species of cactus in the subfamily Opuntioideae Opuntioideae is a subfamily of the cactus family, Cactaceae. It contains 15 genera divided into five tribes. The subfamily encompasses roughly 220–250 species, and is geographically distributed throughout the New World from Canada, to Argentina .... References Alfilerillo, Tasajillo, Cola del Diablo at Desert Tropicals Opuntioideae Flora of Mexico Flora of Bolivia {{cactus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cactus
A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, from the Ancient Greek word (''káktos''), a name originally used by Theophrastus for a spiny plant whose identity is now not certain. Cacti occur in a wide range of shapes and sizes. They are native to the Americas, ranging from Patagonia in the south to parts of western Canada in the north, with the exception of ''Rhipsalis baccifera'', which is also found in Africa and Sri Lanka. Cacti are adapted to live in very dry environments, including the Atacama Desert, one of the driest places on Earth. Because of this, cacti show many adaptations to conserve water. For example, almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opuntioideae
Opuntioideae is a subfamily of the cactus family, Cactaceae. It contains 15 genera divided into five tribes. The subfamily encompasses roughly 220–250 species, and is geographically distributed throughout the New World from Canada, to Argentina. Members of this subfamily have diverse habits, including small ..., including small geophytes, hemispherical cushions, shrub">geophytes">..., including small geophytes, hemispherical cushions, shrubs, trees, and columnar cacti consisting of indeterminate branches or determinate terete or spherical segments. Description Synapomorphies of Opuntioideae include small deciduous, barbed spines called glochids born on areoles and a bony aril surrounding a campylotropous ovule (inverted and curved, such that the micropyle almost meets the funiculus). Other prominent morphological characters for this subfamily are presence of cylindrical, caducous leaves that tend to be shed by maturity and the sectioning of the stem into joints or pads known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quiabentia
''Quiabentia'' is a genus of cactus, cacti, closely related to ''Pereskiopsis''. Description The tree-like or bushy xerophytic species of the genus ''Quiabentia'' have whorled, fleshy, round branches that produce flat, fleshy leaves. The leaves are broadly ovate to spatulate and up to 7 centimeters long. Their areoles are covered with glochids and numerous spines. The almost terminal or terminal appearing, striking flowers are red or pink and open during the day. The flower cup has leaves, areoles, glochids and thorns. A flower tube is missing. The fruits are elongated, fleshy and usually smooth. The large, circular and flattened seeds have a seed coat. Taxonomy One species of the genus ''Quiabentia'' is distributed in Brazil, the other in Bolivia, Paraguay and Argentina. The first description of the genus was made in 1923 by Nathaniel Lord Britton and Joseph Nelson Rose in the appendix to the fourth volume of their work The Cactaceae. The type species of the genus is ''Quiabent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
