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Veronica polita, the grey field-speedwell is a species of flowering plant in the Plantaginaceae (Plantain) family. It is native to Europe, southwestern Asia, North Africa, the Arabian Peninsula and a few nearby countries, and has been introduced to many countries worldwide particularly as a weed of cultivation.

The Mucorales is the largest and best-studied order of zygomycete fungi. Members of this order are sometimes called pin molds. The term mucormycosis is now preferred for infections caused by molds belonging to the order Mucorales.

The Tremellales are an order of fungi in the class Tremellomycetes. The order contains both teleomorphic and anamorphic species, most of the latter being yeasts. All teleomorphic species in the Tremellales are parasites of other fungi, though the yeast states are widespread and not restricted to hosts. Basidiocarps (fruit bodies), when produced, are gelatinous. The order currently comprises 11 families, containing around 250 valid species. Significant genera include Tremella, one species of which is edible and commercially cultivated, and the yeast genus Cryptococcus, several species of which

Hypericum tetrapterum (syn. H. quadrangulum) is a herbaceous perennial plant species in the flowering plant family Hypericaceae. Its common names include St. Peter's wort, Peterwort, square stemmed St. John's wort, and square stalked St. John's wort.

Viola elatior, the fen violet, is a species of violet native to central and northern Europe and northern Asia. In the British Isles it is very rare, occurring in a few fens in England and near the western coast of Ireland. The violet is also known as viola persicifolia and viola stagnina.

The Dermateaceae is a family of cup fungi in the order Helotiales. Most species in this family are plant pathogens but some are saprobes .

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Cerastium holosteoides, the common mouse-ear chickweed, is a species of flowering plant belonging to the family Caryophyllaceae. Its native range is temperate and subarctic areas of the Old World; scattered countries in Africa, nearly all of Eurasia to New Guinea. One of the world's most widespread weeds, it has been introduced to most of North America, the western countries of South America, New Zealand, South Africa, and many islands around the world.

Artemisia norvegica is a species of flowering plant in the aster family known by the common names alpine sagewort, boreal sagewort, mountain sagewort, Norwegian mugwort, arctic wormwood, and spruce wormwood. It is found in cold locations in Eurasia (Scotland, Scandinavia, Ural Mountains of Russia) and high elevations and high latitudes in North America (Nunavut, Yukon, Alaska, British Columbia, Alberta, Washington, Montana, Idaho, Wyoming, California).

Rhytisma is a genus of fungi in the Rhytismataceae family commonly known as 'tar spot'. There are about 18 species, which live parasitically in the leaves of deciduous trees.

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The Phacidiaceae are a family of fungi in the order Helotiales. According to a 2008 estimate, the family contained seven genera and 148 species.

Petasites frigidus, the Arctic sweet coltsfoot or Arctic butterbur, is a species of flowering plant in the family Asteraceae. It is native to Arctic to cool temperate regions of the Northern Hemisphere in northern Europe, northern Asia and northern North America. It is a herbaceous perennial plant producing flowering stems in early spring, and large leaves through the summer. The upright flowering stems are 10–20 cm (4–8 in) tall, and bear only 5–12 inflorescences, yellowish-white to pink in colour. The leaves are rounded, 15–20 cm (6–8 in) broad, with a deeply cleft base and shallowly lobed

Odontites litoralis is a species of flowering plant belonging to the family Orobanchaceae. Its native range is Northern and Northwestern Europe.

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Pilosella floribunda (synonym Hieracium floribundum, also known as pale hawkweed, smoothish hawkweed, yellow hawkweed, and yellow devil hawkweed) is a species of noxious and herbaceous perennial plant from family Asteraceae that is known in Europe (particularly France) and can also be found in United States and Canada. It was believed that it was a hybrid of Pilosella caespitosa (Hieracium caespitosum and Pilosella lactucella (Hieracium lactucella).

Vahlodea is a monotypic genus of plants in the grass family. The only known species is Vahlodea atropurpurea (Wahlenb.) Fr. Its native range is the subarctic (such as Greenland), to temperate parts of the Northern Hemisphere. From (Europe within; Finland, North European Russia, Norway and Sweden,) to Asia within (Japan, Kamchatka, Kuril Islands, Magadan and Taiwan,) and in North America (within the Canadian provinces of; Alberta, British Columbia, Manitoba, Newfoundland and Labrador, Northwest Territories, Nunavut, Ontario, Québec and Yukon and within the USA states of; Alaska, the Aleutian

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Hieracium caesium is a species of flowering plant belonging to the family Asteraceae. Its native range is Europe.

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Hieracium crepidispermum is a North American plant species in the tribe Cichorieae within the family Asteraceae. It is widespread across much of Mexico and found also in the US states of Arizona and New Mexico. Hieracium crepidispermum is an herb up to 100 cm (39 in) tall, with leaves mostly in a rosette at the bottom. Leaves are up to 85 mm (3.3 in) long, sometimes with small teeth on the edges. One stalk will produce 8-25 flower heads in a flat-topped array. Each head has 25–40 white or pale yellow ray flowers but no disc flowers.

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Hieracium plumbeum is a species of flowering plant belonging to the family Asteraceae. Its native range is Europe.