Gigaspermaceae
Genera: 5, Chamaebryum, Costesia, Gigaspermum, Lorentziella, Oedipodiella.
Taxonomy
Gigaspermaceae is a family in Gigaspermales, in the subclass Funariidae.
Plant theory
In the Plant theory it is included in Funariales, which is in Subphase 2.
Botany
Protonema short-lived. Leafy stems short from subterranean axes; central strand, Cladocarpous. Leaves cells usually collenchymatous. Costa present (in Gigaspermum absent) Par- or synoicous. Seta present (very short) Capsule gymnostomous or cleistocarpous. Stomata with 2 guard cells Spores large. Calyptra small, mitrate, fugacious. Gemmae present.