In botany, the term acute refers to a plant part, typically a leaf or petal, that ends in a sharp, distinct point. Unlike an acuminate tip, which gradually narrows, an acute tip tapers more directly and often forms a less elongated point. This shape is commonly observed in many plants and is used to describe the angle formed at the apex.

Characteristics

  • Shape: Tapers to a short, sharp point.
  • Angle: The apex typically forms an angle less than 90 degrees.
  • Margins: Straight or slightly curved near the tip.

Examples in Nature

  • Elm Tree (Ulmus spp.): Leaves often feature acute tips.
  • Holly (Ilex spp.): Some leaves have acute points along the margins.
  • Many Grasses: Often exhibit acute leaf tips for aerodynamic and water-shedding efficiency.

Functional Significance

  • Water Management: Acute tips may help direct water runoff.
  • Streamlined Shape: May reduce wind resistance in exposed environments.

Tip: Incorporating plants with acute leaf shapes can add sharpness and definition to garden designs, especially when paired with broader or rounder foliage for contrast.

acute
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