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"Moss flowers": each shoot has a cluster of antheridia, i.e., an androecium. Sperm of the liverwort Marchantia polymorpha are produced on the upper surface of antheridiophores. Cross-sectional micrograph of the antheridial head of Marchantia sp., showing antheridia containing spermatogenous tissue.
Polytrichum is a genus of mosses — commonly called haircap moss or hair moss — which contains approximately 70 species that have a cosmopolitan distribution. The genus Polytrichum has a number of closely related sporophytic characters. The scientific name is derived from the Ancient Greek words polys, meaning "many", and thrix, meaning "hair".
Diagram of archegonium anatomy. An archegonium (pl.: archegonia), from the Ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium. The ...
Egyptian and Qatari mediators were working to salvage the ceasefire deal between Israel and Hamas on Wednesday, according to Egypt’s state-run Al-Qahera News TV, which is close to the country's ...
An endorsement from Elon Musk, 5 million euros in financial donations this year alone, and now an invitation to meet Hungary's Prime Minister Viktor Orban: once isolated, the far-right Alternative ...
Another factor is the time of year. Gas prices are typically near a low for the year in February due to weak demand. If the tariffs stay in place through summer, the impact will be greater, he said.
Polytrichum commune (also known as common haircap, [2] great golden maidenhair, [2] great goldilocks, [2] common haircap moss, or common hair moss) is a species of moss found in many regions with high humidity and rainfall. The species can be exceptionally tall for a moss with stems often exceeding 30 cm (12 in) and rarely reaching 70 cm (27.5 ...
Mnium arizonicum J.J. Amann – Arizona calcareous moss; Mnium blyttii Bruch & Schimp. – Blytt's calcareous moss; Mnium hornum Hedw. – horn calcareous moss; Mnium jungermannia L. [1] Mnium lycopodioides Schwägr. Mnium marginatum (Dicks. ex With.) P. Beauv. – olivegreen calcareous moss; Mnium spinosum (Voit) Schwägr. – spinosum ...