rachis leaf - EAS
- cactus-art.bizIn botany In plants, a rachis is the main axis of a compound structure. It can be the main stem of a compound leaf, such as in Acaciaor ferns
Acacia
Acacia, commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially it comprised a group of plant species native to Africa and Australia, with the first species A. nilotica described by Linnaeus. Contro…
, or the main, flower-bearing portion of an inflorescence above a supporting peduncle.Fern
A fern is a member of a group of vascular plants that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant p…
en.wikipedia.org/wiki/Rachis - Mọi người cũng hỏi
- https://www.britannica.com/science/rachis-leaf-structure
angiosperms. In angiosperm: Leaves. …of the petiole called the rachis. Some pinnately compound leaves branch again, developing a second set of pinnately compound leaflets (bipinnately compound). The many degrees of compoundness in highly elaborated leaves, such as bipinnately or tripinnately compound, cause these leaves to often appear to be shoot systems.
- https://en.wikipedia.org/wiki/Rachis
In plants, a rachis is the main axis of a compound structure. It can be the main stem of a compound leaf, such as in Acacia or ferns, or the main, flower-bearing portion of an inflorescence above a supporting peduncle. Where it subdivides into further branches, these are known as rachilla (plural rachillae).
A ripe head of wild-type wheat is easily shattered into dispersal units when touched or blown by theWikipedia · Nội dung trong CC-BY-SA giấy phép - https://www.merriam-webster.com/dictionary/rachis
Definition of rachis. 1 : an axial structure: such as. a (1) : the elongated axis of an inflorescence. (2) : an extension of the petiole of a compound leaf that bears the leaflets. b : the distal part of the shaft of a feather that bears the web. 2 : spinal column.
- https://www.maximumyield.com/definition/5067
Sep 04, 2018 · Rachis refers the point on a marijuana plant where the leaflets all meet to form the iconic cannabis fan leaf that is so unique and distinctive to the plant. The term rachis is widely used in botany to refer to the main stem of a compound plant or the main stem of a cluster of flowers. The rachis attaches the leaves or the flowers to one central plant stem.
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- https://edis.ifas.ufl.edu/pdf/PP/PP145/PP145-16704792.pdf
To discuss petiole (rachis) blight, a brief introduction to palm leaf anatomy is required. There are three types of palm leaves. All possess a base (leaf sheath), a petiole, and a blade. The leaf base is the portion that attaches to the stem (trunk). The leaf petiole is the stalk or stem of the leaf connecting the leaf base with the leaf blade.
- https://www.thefreedictionary.com/rachises
n. pl. ra·chis·es or rach·i·des (răk′ĭ-dēz′, rā′kĭ-) 1. a. The main stem of an elongated inflorescence, as in a grass. b. The main axis of a pinnately compound leaf or of a fern frond. 2. The main shaft of a bird's feather, especially the part to which the barbs are attached. 3.
- https://www.amnh.org/learn-teach/curriculum...
Part of the Biodiversity Counts Curriculum Collection. More in Plant Morphology. Pinnate (odd): Leaflets are attached along an extension of the petiole called a rachis; there is a terminal leaflet and therefore an odd number of leafle. Twice pinnate: The leaflets are also divided into leaflets. Pinnate (even): Leaflets are attached along an extension of the petiole called a rachis; there is …
Leaf Articulation - University of Texas at Austin
w3.biosci.utexas.edu/prc/DigFlora/BERB/BERB-absciss.htmlB. swaseyi shade leaf from bud scales to terminal leaflet. Basal node #1 leaflets have already dropped off. B. trifoliolata has equally well defined abscission joints, although the trifoliate terminal rachis node has a subannular ridge with the abscission zone divided into three equal triangular sections rising toward the center.
What is a Palm Frond? Parts, Types, and Uses | Gardenine
https://gardenine.com/palm-frondSep 30, 2021 · The leaf stalk connects the palm fronds to the main stem (tree trunk). Rachis. The rachis is part of the petiole that bears leaves at short intervals. It extends from the end of the petiole up to the tip of the fronds. Frond midrib (leaf sheath) This is the base of the palm frond (end of the leaf stalk), where the fronds attach to the main stem. Cabbage
