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Azolla aculeata
Azolla aculeata V.P. Nikitin in V.P. Nikitin, Hval' Paleobot., 2: 44. 2011
- Name
- Azolla aculeata
- 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
- 44
- Year
- 2011
- Fossil Status
- sporae dispersae (megaspores)
- Stratigraphy
- Eocene
- Strat. comment
- Tavdinian suite
- Location
- NE Tomsk, Tomsk region, Russian Federation
- Paleoregion
- Eurasia (W Siberia)
Data for Holotypus
- Repository
- Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation
- Repository Number
- 210/Н4347
- Diagnosis
- Megaspore complexes medium-sized, 0,42—0,57 mm long. Supraspore approximately as high as the infraspore or shorter. Basic fl oats 9. Lower fl oats 1,5 times smaller than the upper ones. Cap partially covering the supraspore. Columella present. Collar narrow to almost indistinct. Suprafi losum extensive. Infraspore surface fi nely granulate with dense conical to elongated rugged outgrowths formed by merging and vertical enlargement of adjacent grains. Infrafi losum absent or present. Massulae distinctly compressed, medium-sized, 0,10—0,13 mm in diameter, with short, 0,04—0,06 mm, nonseptate glochidia. Massula comprising less than 10 microspores.
