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Disocactus × Jenkinsonii
''Disocactus'' × ''jenkinsonii'' is a hybrid between ''Disocactus phyllanthoides'' and ''Disocactus speciosus''. It is perhaps the most commonly grown orchid cactus and seems to survive and flower under most conditions. It has a very complex taxonomic history and has been mistaken for ''Disocactus ackermannii'' for a long time. History In 1824, George Ackermann brought a part of a stem with him from Mexico and gave that to Tate who succeeded in flowering the specimen. Another specimen raised from Mexican seeds confirmed that this was really a novelty from Mexico and not a hybrid. The species was soon lost in cultivation. During the latter half of the 19th century, when cacti gave away to ferns, palms and orchids, only the toughest survived and as ''D. ackermannii'' is quite tricky it soon became lost in cultivation. About the same time some gardener succeeded in crossing ''D. phyllanthoides'' and ''D. speciosus'' producing a lovely red flowered hybrid. Being a vigorous, hardy, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disocactus Phyllanthoides
''Disocactus phyllanthoides'', the nopalxochitl or German empress, is a species of flowering plant in the cactus family Cactaceae. It is commonly grown as an ornamental houseplant. It is one of the three major species involved in creating the widely grown epiphyllum hybrids or "epis". The others are ''Disocactus speciosus'' and '' Disocactus crenatus''. Description Stems to 1 m long or more, branching, primary stems to 40 cm long, 6 mm thick, woody and terete at base, flattened at apex; secondary stems flat, lanceolate, acute, margins coarsely crenated or scalloped, obtusely toothed, with terete, stalk-like base, 15–30 cm long, 2,5–5 cm wide; areoles nude except for young growth; epidermis green or reddish, nearly smooth. Flowers campanulate, funnel-shaped, diurnal and scentless, 8–10 cm long, 7–9 cm wide, produced on year-old branches; pericarpel ovate with a few spreading bracteoles; entire receptacle 2.5–5 cm long, 7–10 mm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disocactus Speciosus
''Disocactus speciosus'', the sun cactus, is a species of flowering plant in the family Cactaceae. It is native to Mexico, Honduras and Guatemala, and has been introduced to the Canary Islands. As its synonym ''Heliocereus speciosus'' it has gained the Royal Horticultural Society's Award of Garden Merit. Subtaxa The following subspecies are accepted: *''Disocactus speciosus'' subsp. ''blomianus'' (Kimnach) Ralf Bauer – Chiapas Chiapas (; Tzotzil language, Tzotzil and Tzeltal language, Tzeltal: ''Chyapas'' ), officially the Free and Sovereign State of Chiapas ( es, Estado Libre y Soberano de Chiapas), is one of the states that make up the Political divisions of Mexico, ... *''Disocactus speciosus'' subsp. ''cinnabarinus'' (Eichlam ex Weing.) Ralf Bauer – southern Mexico, Honduras *''Disocactus speciosus'' subsp. ''heterodoxus'' (Standl. & Steyerm.) M.Á.Cruz & S.Arias – Guatemala *''Disocactus speciosus'' subsp. ''speciosus'' References speciosus Flora of Northwest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disocactus Ackermannii
''Disocactus ackermannii'' is an epiphytic cactus from tropical forests in the states of Veracruz and Oaxaca, Mexico. In cultivation, it has been confused with ''Disocactus'' × ''jenkinsonii'', a hybrid between '' D. phyllanthoides'' and '' D. speciosus''. Description The stems of ''Disocactus ackermannii'' consist of a short rounded base, about long, followed by longer flattened leaf-like portions, long and wide with wavy edges. The plant branches from the base and arches downwards, being altogether some long. The scarlet flowers have greenish throats and are funnel shaped, or even longer and up to across. The filaments are red but the base is usually greenish. The anthers are pale rose. The style are red. The stigma is purplish. Fertilized flowers are followed by green to brownish red fruits, long and wide. Taxonomy The species was originally named ''Epiphyllum ackermannii'' by Adrian Hardy Haworth in 1829. There are three sets of synonyms: * Haworth's ''Epiphyllum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivars
A cultivar is a type of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and when Plant propagation, propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, micropropagation, tissue culture, or carefully controlled seed production. Most cultivars arise from purposeful human genetic engineering, manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''#Formal definition, Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants that s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epiphyllum Hybrid
Epiphyllum hybrids, epiphyllums, epicacti, or just epis, also known as orchid cacti, which are widely grown for their flowers, are artificial hybrids of species within the group of cacti placed in the tribe Hylocereeae. In spite of the common name, epiphyllum hybrids mainly involve ''Disocactus'' species instead of ''Epiphyllum'' species, though ''Selenicereus grandiflorus'' and some unconfirmed ''Epiphyllum'' species were reportedly used for hybridization. Other sources include '' Pseudorhipsalis'' in the parentage of the group., p. 286 Nothospecies Named nothospecies include: * ''Disocactus'' × ''amaranthinus'' (Regel) M.H.J.van der Meer: ''D. crenatus'' × ''D. phyllanthoides'' * ''Disocactus'' × ''charltonii'' (Mast.) M.H.J.van der Meer: ''D. crenatus'' × ''D. speciosus'' * ''Disocactus'' × ''coopermannii'' (Worsley) M.H.J.van der Meer: ''D. crenatus'' × ''D. phyllanthoides × D. speciosus'' * ''Disocactus'' × ''jenkinsonii'' (McIntosh) M.H.J.van der Meer (syn. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disocactus
''Disocactus'' is a genus of epiphytic cacti in the tribe Hylocereeae found in Central America, the Caribbean and northern South America. It should not be confused with ''Discocactus'', which is a different genus. Species of ''Disocactus'' grow in tropical regions either on trees as epiphytes or on rocks as lithophytes. They have two distinct growth habits. Species such as '' D. phyllanthoides'' have stems which are round at the base but then become flattened and leaflike. Many of the cultivated plants known as epiphyllum hybrids or just epiphyllums are derived from crosses between species of ''Disocactus'' (rather than ''Epiphyllum'') and other genera in the Hylocereeae., p. 286 Description The species of the genus ''Disocactus'' grow as epiphytes or lithophytes and are shrubby, profusely branched, hanging, up to 3 m long. The shoots are ribbed or flattened, 3-angled or flattened, ribbon-like, 3–10 mm wide, remotely crenate and leaf-like. The main shoot, which rot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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