Wilibald Swibert Joseph Gottlieb von Besser

Epipactis atrorubens, the dark-red helleborine or royal helleborine, is an herbaceous plant in the orchid family, Orchidaceae. As with many other species of orchids, the species is legally protected in some countries. Plantlife designated the dark-red helleborine as the county flower for Banffshire, Scotland.

Rorippa sylvestris (the creeping yellowcress, keek, or yellow fieldcress; syn. Radicula sylvestris (L.) Druce ) is an invasive species of plant in the United States, likely entering from Europe before 1818 from ballast water and spreading throughout North America through contaminated nursery seed stock.

Rorippa palustris, marsh yellow-cress, bog yellow-cress or common yellow-cress, is a species of flowering plant in the family Brassicaceae. It is widespread and native to parts of Africa, and much of Asia, Europe and Eurasia, North America and the Caribbean. It can also be found in other parts of the world as an introduced species and a common weed, for example, in Australia and South America. It is an adaptable plant which grows in many types of damp, wet, and aquatic habitat. It may be an annual, biennial, or perennial plant, and is variable in appearance as well.

Helictotrichon, or alpine oatgrass, is a genus of perennial flowering plants in the grass family. The genus name comes from the Greek heliktos meaning twisted, and trichos meaning hair, referring to the shape of the awn. Most of the species are native to Africa and Eurasia with a few species in North America. Helictotrichon sempervirens is widely cultivated as an ornamental. Species Helictotrichon altius (Hitchc.) Ohwi - China Helictotrichon angustum C.E.Hubb. - Kenya, Yemen Helictotrichon arctum Cope - Yemen Helictotrichon barbatum (Nees) Schweick. - South Africa Helictotrichon burmanicum

Viola alba, commonly known as white violet, is a species of violet in the family Violaceae.

Rorippa amphibia, also known as great yellow-cress, is a plant species in the family Brassicaceae. The flowers are visited by many types of insects, and can be characterized by a generalized pollination syndrome.

Galeopsis pubescens, also known as the hairy and downy hempnettle, is a herbaceous annual plant species in the family Lamiaceae, that can be found growing in various European countries.

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Spergularia marina, also called Spergularia salina, is a species of flowering plant in the family Caryophyllaceae (the pink family). It is known as salt sandspurry or lesser sea-spurrey. S. marina is a sprawling annual or sometimes perennial, with stems up to 35 cm (14 in) long. Like other sea-spurrey species, its flowers have white to pink petals, with sepals usually longer than the petals, at 2.5–4 mm (0.1–0.2 in). Plants are salt-tolerant, being found by the sea and in saline areas inland.

Myosotis nemorosa (syn. Myosotis strigulosa) is a plant species of the genus Myosotis. They are native to most of mainland Europe.

Berula is a cosmopolitan genus of flowering plants in the family Apiaceae, whose species are known as water parsnips, as are some other plants in Apiaceae such as Sium latifolium and Sium suave. It is easily confused with the highly toxic water hemlock (Cicuta maculata). Berula species are perennial, aquatic to semi-aquatic, herbaceous plants. The leaves are usually oppositely arranged. The flowerheads are arranged in umbels of small white flowers. Berula erecta is a widespread aquatic plant with fern-like leaves, found across Eurasia, Africa, North America, and elsewhere.

Viola uliginosa is a species of flowering plant belonging to the family Violaceae. Common name swamp violet. It is native to Europe.

Rorippa austriaca is a species of flowering plant in the family Brassicaceae known by the common names Austrian yellow-cress and Austrian fieldcress. It is native to parts of Europe and Asia, and it is known in North America as an introduced species and sometimes a noxious weed. It can grow in disturbed habitat, such as roadsides, and in very wet habitat such as mudflats. It is a perennial herb growing upright to erect, reaching a maximum height near one meter. The branching stem bears hairless blue-green lance-shaped leaves up to 10 centimeters long. The bases of the upper leaves clasp the

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Allium flavescens is a Eurasian species of wild onion native to Bulgaria, Romania, Ukraine, European Russia, Western Siberia, Altay Krai, and Kazakhstan.

Artemisia stelleriana is an Asian and North American species of plants in the sunflower family. It is native to China (Heixiazi Island in Heilongjiang Province), Japan, Korea, Russian Far East (Sakhalin, Kuril Islands, Yakutia, Kamchatka Peninsula), and the Aleutian Islands in the United States. The species is widely cultivated as an ornamental and naturalized in scattered locations in North America, primarily on coastal dunes and other sandy locations, as well as in Scandinavia. Common names include hoary mugwort, Dusty Miller, beach wormwood, and oldwoman.

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Taraxacum erythrospermum, known by the common name red-seeded dandelion, is a species of dandelion introduced to much of North America, but most commonly found in the north. It is often considered as a variety of Taraxacum laevigatum (i.e., Taraxacum laevigatum var. erythrospermum). In many characteristics, it is similar to the common dandelion, Taraxacum officinale.

Artemisia douglasiana, known as California mugwort, Douglas's sagewort, or dream plant, is a western North American species of aromatic herb in the sunflower family.

Palimbia is a genus of flowering plants belonging to the family Apiaceae. Its native range is Romania to Western Siberia and Xinjiang.

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Artemisia michauxiana is a North American species of wormwood in the sunflower family. It is known by the common names Michaux's wormwood and lemon sagewort. It is native to the western United States and Canada. It grows in mountain talus habitats in subalpine to alpine climates. Artemisia michauxiana is a rhizomatous perennial herb with green, lemon-scented foliage. The plant grows up to 100 cm (40 inches) tall with several erect branches. The leaves are divided into many narrow segments which are hairless or lightly hairy and bear yellowish resin glands. The inflorescence is a spike up to

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Artemisia senjavinensis, the arctic wormwood, is a rare Arctic species of plants in the family Asteraceae. It has been found only on the Seward Peninsula on the Alaskan side of the Bering Strait and on the Chukotka (Chukchi) Peninsula on the Russian side. Artemisia senjavinensis is a shrub up to 90 cm (3 feet) tall, with many stems densely clumped together. Leaves are gray-green, woolly, mostly in rosettes close to the ground. There are many small yellow or tan flower heads. The species grows at low elevations near the shore.

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