From today's featured articleAstraeus hygrometricus, the false earthstar, is a fungus common in temperate and tropical regions around the world. When young, it resembles a puffball; in maturity, the outer layer of fruit body tissue splits open in a star shape, similar in appearance to the earthstars. The fungus grows in mutual symbiosis with roots of various trees, especially in sandy soils. It can open up its rays to expose the spore sac in response to increased humidity, and close them up again in drier conditions. The rays have an irregularly cracked surface, while the spore case is pale brown and smooth with an irregular slit or tear at the top. The gleba is white initially, but turns brown and powdery when the reddish-brown spores mature. The species was first described by Christiaan Hendrik Persoon in 1801. Several bioactive chemical compounds have been found in the fruit bodies. North American field guides typically rate the fungus as inedible. (Full article...)
Recently featured:
Did you know...
|
In the news
On this day...
Tycho Brahe (d. 1601) · Richard Temple, 1st Viscount Cobham (b. 1675) · Letitia Woods Brown (b. 1915)
More anniversaries:
|
Today's featured picture
Jane Seymour (c. 1508 – 1537) was Queen of England from 1536 to 1537 as the third wife of King Henry VIII. She succeeded Anne Boleyn as queen consort following the latter's execution in May 1536. She died of postnatal complications less than two weeks after the birth of her only child, a son who became King Edward VI on Henry's death. She was the only one of Henry's wives to receive a queen's funeral, and his only consort to be buried beside him in St George's Chapel at Windsor Castle. Painting: Hans Holbein the Younger |
Other areas of Wikipedia
- Community portal – Bulletin board, projects, resources and activities covering a wide range of Wikipedia areas.
- Help desk – Ask questions about using Wikipedia.
- Local embassy – For Wikipedia-related communication in languages other than English.
- Reference desk – Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
- Site news – Announcements, updates, articles and press releases on Wikipedia and the Wikimedia Foundation.
- Village pump – For discussions about Wikipedia itself, including areas for technical issues and policies.
Wikipedia's sister projects
Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:
Commons Free media repository |
MediaWiki Wiki software development |
Meta-Wiki Wikimedia project coordination |
|||
Wikibooks Free textbooks and manuals |
Wikidata Free knowledge base |
Wikinews Free-content news |
|||
Wikiquote Collection of quotations |
Wikisource Free-content library |
Wikispecies Directory of species |
|||
Wikiversity Free learning materials and activities |
Wikivoyage Free travel guide |
Wiktionary Dictionary and thesaurus |