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1. Crustose Lichens
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1. Examine the crustose lichen specimen closely.
2. Description: Write a brief description of the crustose lichen's physical appearance. |
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2. Foliose Lichens
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1. Observe the foliose lichen specimen with a hand lens.
2.Description: Describe the foliose lichen's characteristics, including color, texture, and overall shape. |
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3. Fruticose Lichens
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1. Examine the fruticose lichen specimen closely.
2. Description: Write a description of the fruticose lichen's growth pattern and any visible structures. |
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4. Record Observations
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Create detailed notes on: Location Substrate (where the lichen is growing) Physical characteristics (color, texture, size, shape) Any unique features or patterns observed. Draw well-labeled diagrams of crustose, fruticose, and foliose lichens.
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Characteristic
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Crustose Lichen
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Foliose Lichen
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Fruticose Lichen
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Attachment
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Tightly adherent to substrate
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Loosely attached to substrate
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Not tightly attached, often bushy
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Growth Form
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Flat and crust-like
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Leaf-like structure
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Three-dimensional, shrubby or branching
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Upper Surface
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Often indistinct or like lower surface
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Well-defined upper surface
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Distinct upper surface
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Lower Surface
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Directly attached to substrate
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Usually lighter in color, may have rhizines
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May have holdfast structures
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Color
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Typically pale to dark colors
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A range of colors, often vibrant
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A variety of colors
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Texture
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Granular or powdery
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Variable, may be smooth or textured
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Bushy, tufted, or wiry
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Ecological Niche
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Can colonize exposed rock surfaces
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Common on tree bark or wood
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Found in a variety of habitats, including open areas
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Habitat
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Often found in open or exposed habitats
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Can inhabit tree trunks, rocks, or soil
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Often on trees, rocks, or other surfaces
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Examples
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Crustose coralline lichen, Rhizocarpon spp.
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Usnea spp., Parmelia spp.
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Cladonia spp., Cladina spp.
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