Key Identification Features
- It is protected by an outer cortex layer made of 2–3 layers of transparent cells, each of which contains a distinctive large pore that is visible even under basic magnification.
- Each cluster typically has two spreading branches that can grow exceptionally long, often exceeding 25 mm, and one or two pale, cylindrical hanging branches.
- They have a distinctive roughly rectangular or tongue-like shape, often slightly pinched in the middle, a form technically described as 'lyrate'.
- Stem leaves have a wide, torn apex, and are bordered by elongated cells that become distinctly broader at the leaf's base.
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