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Azolla cluthiana
Azolla cluthiana V.P. Nikitin in V.P. Nikitin, Hval' Paleobot., 2: 51. 2011
- Name
- Azolla cluthiana
- Rank
- Species
- Generic Name
- [Genus] Azolla
- Authors (Name)
- Nikitin V. P.
- Authors (Pub.)
- Nikitin V. P.
Hval' A. V.
- Publication
- Reproduktivnye struktury Azolla v kajnozoe Zapadnoj Sibiri [2011]
- Journal
- Paleobotanika
- Volume
- 2
- Page number
- 51
- Year
- 2011
- Fossil Status
- sporae dispersae (megaspores)
- Stratigraphy
- Eocene
- Strat. comment
- Tavdinian suite
- Location
- Kljuchi village, Altaj territory, Russian Federation
- Paleoregion
- Eurasia (Siberia)
Data for Holotypus
- Repository
- Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation
- Repository Number
- 213/Н3905
- Diagnosis
- Megaspore complexes medium-sized, 0,47—0,55 mm long. Supraspore considerably shorter and narrower than the infraspore. Basic floats 9. Lower floats 1,5 times smaller than the upper ones. Cap partially covering the supraspore. Columella present. Collar narrow. Suprafilosum extensive, made up of both shorter hairs and long filaments. Infraspore surface finely granulate, either consisting of (1) larger grains combining into dense wide rounded tubercles that enclose crater-like areas occupied by rounded foamy particles, and (2) smaller grains in areas between the tubercles (f. tuberculata) or spongy, made up of uniform interfused elements that do not form tubercles (f. reticulata). Infrafilosum either almost absent to weakly developed (f. tuberculata) or distinct (f. reticulata). Massulae distinctly compressed, small, about 0,05 mm in diameter, with medium-sized, 0,07—0,1 mm, nonseptate glochidia. Massula comprising 3—4 microspores.
Links by parent
Infraspecies
Links by species
Infraspecies
