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Encyclopedia > Rachis
Rachis type barley
Rachis is also the alternate spelling of Ratchis, king of the Lombards, 744-749.

The rachis (pronounced /ˈɹeɪkɪs/) is the main axis of the inflorescence, or spike, of wheat and other cereals, to which the spikelets are attached. It is also the part of the axis that the pinnae are attached to in ferns, the main stem of a compound leaf (such as in Acacia), or the main axis in compound inflorescences in other angiosperms. Wikipedia does not have an article with this exact name. ... Wikipedia does not have an article with this exact name. ... Ratchis was duke of Friuli (739-744) and king of the Lombards (744-749). ... Image File history File links Merge-arrows. ... Subfamilies There are 7 subfamilies: Subfamily Arundinoideae Subfamily Bambusoideae Subfamily Centothecoideae Subfamily Chloridoideae Subfamily Panicoideae Subfamily Pooideae Subfamily Stipoideae The true grasses are monocotyledonous plants (Class Liliopsida) in the Family Poaceae, also known as Gramineae. ... Articles with similar titles include the NATO phonetic alphabet, which has also informally been called the “International Phonetic Alphabet”. For information on how to read IPA transcriptions of English words, see IPA chart for English. ... Red clover inflorescence (spike) An inflorescence is a group or cluster of flowers on a branch of a plant. ... Look up spike in Wiktionary, the free dictionary. ... Species T. aestivum T. boeoticum T. dicoccoides T. dicoccon T. durum T. monococcum T. spelta T. sphaerococcum T. timopheevii References:   ITIS 42236 2002-09-22 Wheat Wheat For the indie rock group, see Wheat (band). ... Grain redirects here. ... This article is about the group of pteridophyte plants. ... Look up foliage in Wiktionary, the free dictionary. ... For other uses, see Acacia (disambiguation). ... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ...


Spikelets are small inflorescences bearing one or more florets, or small flowers, along with a set of miniature bractlike leaves. When the fruits of the wild-type wheat are fully ripened, a series of abscission layers forms that divides the rachis into dispersal units consisting of a single spikelet attached to a short segment of the rachis. A ripe head of wheat is thus easily shattered into dispersal units when touched or blown by the wind. This is referred to by archaeologists as a "brittle rachis". Wildflowers A flower is the reproductive organ of those plants classified as angiosperms ( flowering plants; Division Magnoliophyta). ... Leaves are an Icelandic five-piece alternative rock band who came to prominence in 2002 with their debut album, Breathe, drawing comparisons to groups such as Coldplay and Doves. ... Popular Japanese fashion magazine throughout the 1990s; the photography of which has recently been reissued in two collections from Phaidon press. ... Réseaux IP Européens (RIPE, French for European IP Networks) is a forum open to all parties with an interest in the technical development of the Internet. ... For other uses, see Wind (disambiguation). ... Archaeology or sometimes in American English archeology (from the Greek words αρχαίος = ancient and λόγος = word/speech) is the study of human cultures through the recovery, documentation and analysis of material remains, including architecture, artefacts, biofacts, human remains, and landscapes. ...


In animal anatomy, rachis is the series of articulated vertebrae, which encase the spinal cord and forms the supporting axis of the body; the spine. This is also called vertebral column. In feathers, rachis refers to the central shaft. Zootomy is the zoological discipline that focuses on animal anatomy, in particular on the dissection of animals. ... A diagram of a thoracic vertebra. ... The Spinal cord nested in the vertebral column. ... Two feathers Feathers are one of the epidermal growths that form the distinctive outer covering, or plumage, on birds. ...


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Rachis - Wikipedia, the free encyclopedia (212 words)
The rachis (pronounced /ˈɹeɪkɪs/) is the main axis of the inflorescence, or spike, of wheat and other cereals, to which the spikelets are attached.
When the fruits of the wild-type wheat are fully ripened, a series of abscission layers forms that divides the rachis into dispersal units consisting of a single spikelet attached to a short segment of the rachis.
In animal anatomy, rachis is the series of articulated vertebrae, which encase the spinal cord and forms the supporting axis of the body; the spine.
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