Equisetum
Query URLs
https://term.museum-digital.de/md-de/tag/33359
- Note
- "Equisetum (/ˌɛkwɪˈsiːtəm/; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds.
Equisetum is a "living fossil", the only living genus of the entire subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests. Some equisetids were large trees reaching to 30 m (98 ft) tall. The genus Calamites of the family Calamitaceae, for example, is abundant in coal deposits from the Carboniferous period. The pattern of spacing of nodes in horsetails, wherein those toward the apex of the shoot are increasingly close together, inspired John Napier to invent logarithms. Modern horsetails first appeared during the Jurassic period." - (en.wikipedia.org 05.12.2021)
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Schachtelhalm (Calamitaceae)
Es handelt sich um einen Teil...
Object information
Image: Städt. Hellweg-Museum Geseke - CC BY-NC-SA -
Schachtelhalm (Calamitaceae)
Es handelt sich um einen Teil...
Object information
Image: Städt. Hellweg-Museum Geseke - CC BY-NC-SA -
Teil eines sterilen Zweiges eines Schachtelhalmgewächses / Annularia spicata
Fossilreste von...
Object information
Image: Museum für Naturkunde Chemnitz - RR-F -
Ansitzende Sporophyllähren und Blattwirtel in kohliger Erhaltung / Ansitzende Calamostachys tuberculata und Annularia stellata
Das Fossil in kohliger...
Object information
Image: Museum für Naturkunde Chemnitz - RR-F -
Stämme in kieseliger Erhaltung / Arthropitys bistriata (Cotta 1832) Goeppert 1864/65
Der Querschnitt des...
Object information
Image: Museum für Naturkunde Chemnitz - RR-F
References
Synonyms
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