radekwalkowiak's Journal

Brachythecium rutabulum (21-09-24)

https://www.researchgate.net/publication/384240150_Brachythecium_rutabulum_21-09-24

Brachythecium rutabulum (Hedw.) Bruch, Schimp. & W. Gümbel (1853)
Rough-Stalked Feather-Moss
Das Gemeine Kurzbüchsenmoos

This specimen, after 8 years in a dark basement (in a cardboard box), got a new life; with water and light sun (from my observations it is clear that exposing such specimens to strong sun leads to their degradation) it is doing very well. There were 5 other specimens in the box but they were taken by rats.

Posted on September 22, 2024 03:06 PM by

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A new species of the equisetalean plant Equicalastrobus from the Middle Triassic of Argentina

https://doi.org/10.4202/app.01130.2023
Acta Palaeontologica Polonica, 2024

Posted on September 07, 2024 02:37 PM by

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Microscale Humidity Sensor Based on Iron-Coated Elaters of Equisetum Spores

https://doi.org/10.3390/bios14090414

Biosensors 2024, 14(9), 414

Interesting publication, but I have one remark. It may not be a big mistake, and some may consider it a trifle, but as someone who has been passionately involved with this group of plants for many years, I will write this: rather not elaters; it should be correct - hapters, i.e. dead tape-like outgrowths of the spore wall in horsetails, reacting to changes in air humidity; they are a product of the tapetum (a layer surrounding the spore-forming tissue in the organs of some plants, involved in the process of nourishing the tissue and developing spores, as well as pollen grains); in dry air they unwind, and in humid air they twist around the spore, facilitating the dispersal of spores. Elaters usually contain living cells or simply are them - hapters, on the other hand, are completely dead / warm regards, R. J. Walkowiak.

Posted on September 02, 2024 11:27 AM by

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