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Orchids are plants that belong to the family Orchidaceae (/ ˌ ɔːr k ɪ ˈ d eɪ s i. iː,-s i. aɪ /), [2] a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Orchids are cosmopolitan plants that are found in almost every habitat on Earth except glaciers.
Many monocots are herbaceous and do not have the ability to increase the width of a stem (secondary growth) via the same kind of vascular cambium found in non-monocot woody plants. [35] However, some monocots do have secondary growth; because this does not arise from a single vascular cambium producing xylem inwards and phloem outwards, it is ...
Largely herbaceous plants that generally grow in soil or on other plants. Orchids are the largest family of vascular plants, with more than 26,000 species and 100,000 recorded cultivars. Vanilla is derived from the fermentation of Vanilla planifolia. Cattleya, Cymbidium, Oncidium, Phalaenopsis, Paphiopedilum and Vanda are commonly grown ...
Boat orchids prefer humidity around 50% and bright, indirect light. Dendrobium orchids are perhaps the best option for growing indoors because they can tolerate the lowest humidity, though all ...
Monocotyledons are one of two major groups of flowering plants (or angiosperms) that are traditionally recognized, the other being dicotyledons, or dicots. Monocot seedlings typically have one cotyledon (seed-leaf), in contrast to the two cotyledons typical of dicots. Monocots have been recognized at various taxonomic ranks, and under various ...
Aside from cotyledon number, other broad differences have been noted between monocots and dicots, although these have proven to be differences primarily between monocots and eudicots. Many early-diverging dicot groups have monocot characteristics such as scattered vascular bundles, trimerous flowers, and non-tricolpate pollen. [5]
Epiphytic orchids are found on many positions of the host tree, depending on species requirements and size, some large species will grow in a fork, whereas some small species scramble through thin branches, other species will climb up the trunk etc. etc. The trees provide many habitats with different conditions of temperature, contact and light.
When Dressler published his classification in 1993, the relationships of orchids to other monocots was still unknown. Some of the first molecular phylogenetic studies of monocots resolved the Orchidaceae as sister to the astelioid clade of the order Asparagales , but this result never had strong statistical support.