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Onychiopsis
Taxonomy
Onychiopsis was named by Yokoyama (1895). It is not extant. It is considered to be a form taxon. Its type is Onychiopsis elongata.
It was assigned to Polypodiaceae by Knowlton (1919), Andrews (1970), Lakhanpal et al. (1976), Chandra and Tewari (1991); and to Polypodiopsida by Jud (2011).
It was assigned to Polypodiaceae by Knowlton (1919), Andrews (1970), Lakhanpal et al. (1976), Chandra and Tewari (1991); and to Polypodiopsida by Jud (2011).
Species
O. brevifolia (syn. Thyrsopteris retusa, Thyrsopteris pachyphylla, Thyrsopteris nana, Thyrsopteris squarrosa, Thyrsopteris dentata, Thyrsopteris heterophylla, Thyrsopteris sphenopteroides), O. elongata (type species), O. goepperti (syn. Thyrsopteris elliptica, Thyrsopteris distans, Thyrsopteris rhombifolia, Thyrsopteris inaequipinnata, Thyrsopteris bella, Thyrsopteris rarinervis, Thyrsopteris pinnatifida, Thyrsopteris virginica, Thyrsopteris decurrens, Thyrsopteris densifolia, Thyrsopteris microloba, Thyrsopteris rhombiloba, Thyrsopteris pachyrachis, Thyrsopteris angustiloba, Thyrsopteris varians, Thyrsopteris alata), O. latiloba (syn. Thyrsopteris divaricata, Thyrsopteris crenata, Thyrsopteris brevipennis), O. nervosa (syn. Thyrsopteris crassinervis, Thyrsopteris heteroloba, Thyrsopteris meekiana, Adiantites parvifolius, Thyrsopteris pecopteroides, Thyrsopteris obtusiloba, Thyrsopteris maakiana), O. paradoxus, O. psilotoides (syn. Thyrsopteris dentifolia, Thyrsopteris microphylla, Thyrsopteris angustifolia, Thyrsopteris insignis)