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Moonwort
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Moonworts are seedless vascular plants of the genus Botrychium, sensu stricto. They are small, with fleshy roots, and reproduce by spores shed into the air. One part of the leaf is sterile and fernlike, the other fertile and carrying the clusters of sporangia or spore cases. Some species only occasionally emerge above ground and gain most of their nourishment from an association with mycorrhizal fungi. They are unusual among tracheophytes ("higher plants") in that at least some species produce the sugar trehalose.
The circumscription of Botrychium is disputed between different authors; some botanists include the genera Botrypus and Sceptridium within Botrychium, while others treat them as distinct. The latter treatment is provisionally followed here.
Selected species
- Botrychium acuminatum – Pointed Moonwort
- Botrychium ascendens – Upswept Moonwort, Triangle-lobed Moonwort, Upward-lobed Moonwort
- Botrychium australe
- Botrychium boreale – Northern Moonwort
- Botrychium campestre – Prairie Moonwort, Prairie Dunewort
- Botrychium crenulatum – Crenulate Moonwort
- Botrychium dissectum – Lacy-leaved Grapefern, Cut-leaved Grapefern, Cut-leaved Moonwort
- Botrychium hesperium – Western Moonwort
- Botrychium lanceolatum – Lance-leaved Grapefern, Triangle Moonwort, Triangle Grapefern
- Botrychium lineare – Narrow-leaved Grapefern
- Botrychium lunaria – Common Moonwort, Grapefern Moonwort
- Botrychium lunarioides
- Botrychium matricariifolium – Daisy-leaved Moonwort, Matricary Grapefern, Matricary Moonwort, Chamomile Grapefern
- Botrychium minganense – Mingan's Moonwort
- Botrychium montanum – Mountain Moonwort
- Botrychium mormo – Little Goblin Moonwort
- Botrychium multifidum (syn. B. matricariae) – Leathery Grapefern
- Botrychium oneidense – Lake Oneida Grapefern, Blunt-lobed Grapefern
- Botrychium pallidum – Pale Moonwort
- Botrychium paradoxum – Peculiar Moonwort
- Botrychium pedunculosum – Stalked Moonwort
- Botrychium pinnatum – Northern Moonwort
- Botrychium pseudopinnatum – False Northwestern Moonwort, False Daisy-leaved Grapefern
- Botrychium rugulosum – St. Lawrence Grapefern, Rugulose Grapefern, Ternate Grapefern
- Botrychium simplex – Little Grapefern, Least Moonwort, Least Grapefern
- Botrychium socorrense
- Botrychium spathulatum – Spatulate Moonwort, Spoon-leaved Moonwort
- Botrychium ternatum
- Botrychium tunux
- Botrychium × watertonense
- Botrychium yaaxudakeit
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