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Protosphagnaceae
Family Protosphagnaceae Ignatov in Ignatov, Voronkova, Spirina, Polevova Diversity (Basel), 16(10(622)): 10. 8 Oct 2024
- Name
- Protosphagnaceae
- Rank
- Family
- Authors (Name)
- Ignatov M. S.
- Authors (Pub.)
- Ignatov M. S.
Voronkova T. V.
Spirina U. N.
Polevova S. V.
- Publication
- How to recognize mosses from extant groups among Paleozoic and Mesozoic fossils [2024/10]
- Journal
- Diversity
- Volume
- 16
- Issue
- 10(622)
- Page number
- 10
- Year
- 2024
- Parent Taxon
- [Order] Protosphagnales
- Type
- [Genus] Protosphagnum
- Diagnosis
- Stems sparsely irregularly branched, leaves widely spaced but rosettelike crowded terminally. Rhizoids rare, absent in most specimens. Foliose structures present on stems around branch primordia, cochleariform, broadly rounded or truncate, well developed and regularly retained after full branch development. Leaves spreading to patent, broadly to narrowly ovate or elliptic, usually broadly rounded to apex, rarely acute; auriculate, cordate or gradually narrowed to the base; very shortly decurrent; margins plane, bluntly serrate, bordered throughout, occasionally in young leaves less so in apical part; border cells unistratose, uni- or biseriate, overlapping with cells above and shortly bent outwards; laminal cells varing from hexagonal to arranged in T-triads, TT-tetrads or TTT-pentads; costa terminating shortly below leaf apex; moderately broad, unistratose, with lateral branches. Spherical or pyriform brood bodies covered by rhizoids sometimes
present on the stem or dorsal side of costa.
