| Arctoscyphus | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Division: | Marchantiophyta |
| Class: | Jungermanniopsida |
| Order: | Jungermanniales |
| Family: | Solenostomataceae |
| Genus: | Arctoscyphus Hässel |
Arctoscyphus is a genus of liverworts belonging to the family Solenostomataceae. [1]
The species of this genus are found in southernmost America. [1]
Species: [1]
Sverre Helge Hassel was a Norwegian polar explorer and one of the first five people to reach the South Pole.
Odd Hassel was a Norwegian physical chemist and Nobel Laureate.
Schistosomatidae is a family of digenetic trematodes with complex parasitic life cycles. Immature developmental stages of schistosomes are found in molluscs and adults occur in vertebrates. The best studied group, the blood flukes of the genus Schistosoma, infect and cause disease in humans. Other genera which are infective to non-human vertebrates can cause mild rashes in humans.
The Notothyladaceae is the only family of hornworts in the order Notothyladales.
Anthoceros is a genus of hornworts in the family Anthocerotaceae. It is distributed globally. Species of Anthoceros are characterized by having a small to medium-sized, green thallus that is more or less lobed along the margins.
Folioceros is a genus of hornworts in the family Anthocerotaceae. The genus is common locally in the tropical and subtropical regions of Asia, growing on moist rocks, in fallow fields, and near waterfalls. It has a yellow-green gametophyte thallus that is crispy and translucent, with short branchings that are almost pinnate. Plants are usually less than a centimeter wide and 3 centimeters long. They may be monoicous or dioicous.
Kai-Uwe von Hassel was a German politician from Schleswig-Holstein associated with the Christian Democratic Union (CDU). He served as Minister President of Schleswig-Holstein from 1954 to 1963, as Federal Minister of Defence from 1963 to 1966, and as Federal Minister for Displaced Persons, Refugees and War Victims from 1966 to 1969. From 1969 to 1972 he was the fourth president of the Bundestag.
The Arctic lemming is a species of rodent in the family Cricetidae.
Pallaviciniaceae is a widely distributed family of liverworts in the order Pallaviciniales. All species are thallose, typically organized as a thick central costa (midvein), each side with a broad wing of tissue one cell in thickness. All species are dioicous. The greatest diversity is in Australasia, with some species endemic to that region, though species belonging to the family may be found on every continent except Antarctica.
Haesselia is a genus of liverworts in the family Cephaloziaceae. It contains the following species :
Leiosporoceros dussii is the only species in the hornwort genus Leiosporoceros. The species is placed in a separate family, order, and class for being "genetically and morphologically distinct from all other hornwort lineages." Cladistic analysis of genetic data supports a position at the very base of the hornwort clade. Physical characteristics that distinguish the group include unusually small spores that are monolete and unornamented. Additionally, there are unique strands of Nostoc (cyanobacteria) that grow inside the plant parallel with its direction of growth. Unlike other hornworts with symbiotic cyanobacteria that enters through mucilage clefts, the mucilage clefts in Leiosporoceros is only present in young plants and then closes permanently once the cyanobacterial colonies have been established. Also mycorrhiza and pyrenoids are absent. Male plants have been found in Panama.
Hymenophyton is a genus of the order Pallaviciniales (liverworts) containing one to three species. The genus was formerly described as monotypic, as each member possesses a close morphological resemblance, but phytochemical and molecular evidence now supports an infrageneric classification two separate species. The name Hymenophyton leptopodum, regarded as a synonym of Hymenophyton flabellatum, has been resurrected. A population found in Chile is regarded as a separate clade, and the reinstatement of Hymenophyton pedicellatum has been proposed.
Pseudolepicoleaceae is a family of liverworts in the order Jungermanniales.
Sphaerosporoceros is a genus in the hornwort family Anthocerotaceae. It includes only two species, both originally published as species of Anthoceros but since transferred to the new genus.
Leiomitra is a genus of liverworts in the family Trichocoleaceae.
Kristoffer Wilhelm von Hassel is an American boy known for being the world's youngest known hacker and notable for being the youngest "security researcher" listed on Microsoft's Security Techcenter as having exposed a security vulnerability. At the age of five, Hassel exposed security lapses in the Microsoft Live Xbox system, prompting wide media coverage, with some journalists highlighting the dropping age of hackers and their technology mastery.
Isophyllaria is a genus of liverworts belonging to the family Pseudolepicoleaceae.
Herzogiaria is a genus of liverworts belonging to the family Pseudolepicoleaceae.
Adelanthaceae is a family of liverworts belonging to the order Jungermanniales.
Pseudolepicolea is a genus of liverworts belonging to the family Pseudolepicoleaceae.