ATHYRIACEAE
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publication ID |
https://doi.org/10.5281/zenodo.302862 |
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persistent identifier |
https://treatment.plazi.org/id/1213417E-FFC2-FFC0-CB61-F2E640A4C77C |
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treatment provided by |
Plazi |
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scientific name |
ATHYRIACEAE |
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XVIII. ATHYRIACEAE View in CoL 3
Rhizomes dictyostelic, with opaque scales. Petioles grooved, with 2 vascular strands which unite distally. Sori superficial, lying on the veins; spores bilateral. 1 Fertile and sterile leaves dissimilar
2 Sterile leaves up to 170 cm, veins free 5. Matteuccia
2 Sterile leaves up to 50 cm, veins anastomosing 6. Onoclea 1 Fertile and sterile leaves similar
3 Indusium absent 1. Athyrium 3 Indusium present 4 Indusium a circumbasal ring of hairy scales 4. Woodsia 4 Indusium not a ring of scales 5 Indusium hood-like, attached at basiscopic side of sorus 3. Cystopteris 5 Indusium flap-like, linear or oblong, attached laterally 6 Leaves forming a crown at apex of rhizome 1. Athyrium 6 Leaves solitary and distant on rhizome 2. Diplazium
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