Athyrium Roth
Details
Athyrium Roth, Tent. Fl. Germ. 3, 31, 58 (1799)
Athyrium Roth
Biostatus
Nomenclature
Roth
Roth
1799
31, 58
ICN
Athyrium Roth
genus
Athyrium
From the Greek a (without) and thyra (door), a reference to the late opening or reflexing of the indusia to expose the sporangia.
Classification
Subordinates
Descriptions
Athyrium Roth
Sori dorsal; indusium us. elongate and curved across veinlet at distal end of sorus, or interrupted at distal end and produced on both sides of veinlet. Sporangia with slender stalks; annulus incomplete, vertical; spores bilateral. Rhizome dictyostelic, us. erect, sts creeping. Stipes with 2 vascular strands us. uniting above. Fronds us. large and decompound, veins rarely anastomosing. In a wide sense a genus of some 600 widely distributed spp., by some split into a number of genera.
Athyrium Roth
Terrestrial ferns. Rhizomes erect to long-creeping, scaly. Fronds 1-3-pinnate, scaly at least on stipes; veins free. Sori round or usually elongate, on one side of a vein, sometimes also developed distally on the second side. Indusia reniform, elongate or hook-shaped, attached laterally, opening towards midrib. Spores monolete.
Taxonomic concepts
Athyrium Roth
Athyrium Roth
Collections
Notes
Etymology
From the Greek a (without) and thyra (door), a reference to the late opening or reflexing of the indusia to expose the sporangia.
Metadata
e4745b28-1f9a-4f57-a70e-b519c949d1f5
scientific name
Names_Plants
1 January 2000
2 December 2021