Oxydendrum arboreum, the sourwood or sorrel tree, is the sole species in the genus Oxydendrum, in the family Ericaceae. It is native to eastern North America, from southern Pennsylvania south to northwest Florida and west to southern Illinois; it is most common in the lower chain of the Appalachian Mountains. The tree is frequently seen as a component of oak-heath forests.
Betula nana, the dwarf birch, is a species of birch in the family Betulaceae, found mainly in the tundra of the Arctic region.
Andreaea is a genus of rock mosses described by Johann Hedwig in 1801.
Meesia triquetra, the three-ranked hump-moss, is a moss that occurs all around the northern hemisphere in higher latitudes.
Andreaea frigida, commonly known as icy rock moss, is a species of moss endemic to Europe.
Hypnum cupressiforme, the cypress-leaved plaitmoss or hypnum moss, is a common and widespread species of moss belonging to the genus Hypnum. It is found in all continents except Antarctica and occurs in a wide variety of habitats and climatic zones. It typically grows on tree trunks, logs, walls, rocks and other surfaces. It prefers acidic environments and is fairly tolerant of pollution. It was formerly used as a filling for pillows and mattresses; the association with sleep is the origin of the genus name Hypnum.
Luzula nivalis, commonly known as arctic wood-rush or less commonly as snowy wood-rush, is a species of perennial rush native to the North American Arctic and Northern Europe. It was described by Polunin (1940) as one of the most abundant, ubiquitous, and ecologically important of all arctic plants.
Pedicularis verticillata, the whorled lousewort, is a species of flowering plant in the family Orobanchaceae which can be found in Alaska, North-Western Canada, and everywhere in China at the elevation of 2,100–4,400 metres (6,900–14,400 ft). Its native habitats include moist meadows and lakeshores.
Polytrichum strictum, commonly known as bog haircap moss or strict haircap, is an evergreen and perennial species of moss native to Sphagnum bogs and other moist habitats in temperate climates. It has a circumboreal distribution, and is also found in South America and Antarctica.
Andreaea rothii, or Roth's andreaea moss, is a species of moss in the family Andreaeaceae native to North America and parts of Europe. This plant was described in 1807 by Weber and Mohr.
Fissidens limbatus commonly known as Herzog's pocket-moss, is a moss in the family Fissidentaceae. This species is found growing in high elevations in tropical America in addition to the US, Mexico and Canada. Montagne first collected F. crispus in 1838.
Orthotrichum lyellii, also known as Lyell's bristle moss, is a species of acrocarpous moss belonging to the family Orthotrichaceae. O. lyellii can be found throughout western North America and Europe. It is found most commonly growing epiphytically on a variety of trees, and less commonly on rocks or boulder substrates.
Andreaea rupestris is a species of moss in the class Andreaeopsida, are commonly referred to as the "lantern mosses" due to the appearance of their dehisced sporangia. It is typically found on smooth, acidic, exposed rock in the Northern hemisphere. It exhibits the common features of the genus Andreaea such as being acrocarpous, having dark pigmentation, lacking a seta, and bearing 4 lines of dehiscence in its mature sporangia, but can be further identified upon careful examination of its gametophytic leaves which have an ovate base to a more blunt apex compared to other similar species.
Carex bicolor, the bicoloured sedge, is a species of sedge native to North America, Northern Europe and Northern Asia. The International Union for Conservation of Nature has assessed the plant's conservation status as being of least concern because it has a widespread distribution and faces no particular threats.
Ptychostomum pseudotriquetrum, commonly known as marsh bryum, is a species of moss belonging to the family Bryaceae. It is distinguished by its strongly decurrent leaves that extend down the stem, central leaf stalks which may extend slightly beyond the tip of the leaf, dioicy, and long stems densely matted with rhizoids. It is found worldwide, excluding the tropics.
Fissidens dubius, commonly known as the rock-pocket moss, is a species of moss belonging to the family Fissidentaceae. First described by Palisot de Beauvois in 1805 from material collected in Philadelphia, it is a relatively large moss growing up to 5 cm (2 in) tall that forms loose to dense mats on calcareous substrates. The species is characterised by its serrated leaf margins, pale border of thick-walled cells, and typically dioicous reproduction. It has a broad global distribution across Europe, North and South America, Asia, North Africa, and New Zealand, occurring in various habitats from lowlands to alpine zones, particularly in shaded locations on basic soils and rocks. While morphologically similar to F. adianthoides, F. dubius is distinguished by its smaller leaf cells and irregularly thickened leaf tips. The species is classified as Least Concern due to its stable populations and absence of major threats.
Hypnum is a genus of mosses belonging to the family Hypnaceae.
Koenigia islandica is a species of annual flowering plant in the buckwheat family, Polygonaceae and is the type species of the genus Koenigia. It is a very small plant and is found growing on wet gravel and scree in arctic tundra and alpine meadows.
Andreaea blyttii, also commonly known as Blytt's rock moss, is a moss belonging to the family Andreaeaceae, commonly known as rock moss, granite moss, or lantern moss because of this family's unique sporangium. It is part of the genus Andreaea which is known for forming dark brownish or reddish-black carpets in high elevations. This species was first described by Wilhelm Philippe Schimper in 1855.
Callicladium imponens, also known as brocade moss, is a species of moss native to North America. It is usually golden to yellow-green coloured, sometimes brownish. Its stems are medium to large sized usually reaching 3–10 cm. Unlike some other moss species, C. imponens lacks a hyalodermis but possesses a weak central strand.
