One of the mysteries of the English language finally explained.
A very short leaf, such as in a moss or clubmoss, with a single unbranched vein and no leaf gaps in the stele.
- ‘Many groups (Lycopodiaceae is an exception) have a ligule or small flap of tissue adaxially above each microphyll, or its homologous sporophyll.’
- ‘The extension of the vascular system into the flaps of tissue creates a true leaf, in this case a microphyll.’
- ‘Are the leaves microphylls as in lycopsids or megaphylls?’
- ‘The microphyll has only a single unbranched strand of vascular tissue, or vein, whereas megaphylls, found in other plants with leaves, have multiple veins, usually branching one or more times within the leaf.’
- ‘The only lineage that has survived is the horsetails, which are herbaceous and share characters with their extinct progenitors such as articulate stems with microphylls arranged in whorls.’
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