Basics of Leaf Identification
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This is a revision of
This is a revision of my first video I published on YouTube and I hope you enjoy! It explains in detail the basics how to identify angiosperm trees using their leaves. If you have any questions about the video please ask me in the comment section below :)
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Vocabulary words:
Leaf blade (lamina): A broad, flat area where photosynthesis occurs.
Leaflet: A leaf-like structure that makes up a compound leaf.
Rachis: Point on a compound leaf where leaflets meet.
Petiole: Part of stalk that connects a leaf to the stem.
Lateral (axillary) bud: Buds that reside on the sides of a stem.
Node: A node is where buds attach to the stem.
Internode: The space between two nodes.
Opposite: Two leaves arise from one node directly across from each other.
Alternate: One leaf arises from each node in an alternating pattern.
Leaf margin: Outer edge of a leaf.
Entire: Leaf margin has no lobes.
Lobed: Leaf margin contains projections from the center of the leaf.
Lobes: Projections from the center of the leaf.
Sinus: Indent in leaf margin between two lobes.
Toothed (serrate): Margin has a saw-like texture.
Doubly-toothed: Teeth of margin have a saw-like texture themselves.
Smooth: No teeth present on leaf margin.
Palmate: Looks like a hand with fingers spread.
Pinnate: Resembles a feather and has similar parts on either side of the midvein.
Midvein: Central vein of the leaf that secondary veins will come from.
Palmately compound: All of the leaflets originate from one spot on the leaf.
Pinnately compound: Leaflets are arranged on either side of the rachis.
Bi-pinnately compound: Each of the leaflets is divided again into more leaflets.
Glabrous: Hairless.
Glaucous: Appears bluish white and waxy.
Pubescent: Hairy or fuzzy
Bristle: A stiff hair that typically occurs at the end of a lobe.
Gland: Releases nectar as a way to pay defensive insects.
Stipules: Leaf-like structures that grow at the end of a petiole.
Stipule scars: Remnants of stipules that have fallen off.
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Instagram: Instagram: mo_plant_daddy
Twitter: Twitter: mo_plant_daddy
Facebook: Facebook: mo.plant.daddy
Tiktok: https://www.tiktok.com/@mo_plant_dadd...
******************************************************************************
Vocabulary words:
Leaf blade (lamina): A broad, flat area where photosynthesis occurs.
Leaflet: A leaf-like structure that makes up a compound leaf.
Rachis: Point on a compound leaf where leaflets meet.
Petiole: Part of stalk that connects a leaf to the stem.
Lateral (axillary) bud: Buds that reside on the sides of a stem.
Node: A node is where buds attach to the stem.
Internode: The space between two nodes.
Opposite: Two leaves arise from one node directly across from each other.
Alternate: One leaf arises from each node in an alternating pattern.
Leaf margin: Outer edge of a leaf.
Entire: Leaf margin has no lobes.
Lobed: Leaf margin contains projections from the center of the leaf.
Lobes: Projections from the center of the leaf.
Sinus: Indent in leaf margin between two lobes.
Toothed (serrate): Margin has a saw-like texture.
Doubly-toothed: Teeth of margin have a saw-like texture themselves.
Smooth: No teeth present on leaf margin.
Palmate: Looks like a hand with fingers spread.
Pinnate: Resembles a feather and has similar parts on either side of the midvein.
Midvein: Central vein of the leaf that secondary veins will come from.
Palmately compound: All of the leaflets originate from one spot on the leaf.
Pinnately compound: Leaflets are arranged on either side of the rachis.
Bi-pinnately compound: Each of the leaflets is divided again into more leaflets.
Glabrous: Hairless.
Glaucous: Appears bluish white and waxy.
Pubescent: Hairy or fuzzy
Bristle: A stiff hair that typically occurs at the end of a lobe.
Gland: Releases nectar as a way to pay defensive insects.
Stipules: Leaf-like structures that grow at the end of a petiole.
Stipule scars: Remnants of stipules that have fallen off.
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