| Ptilium | |
|---|---|
 | |
| Ptilium crista-castrensis | |
Scientific classification  | |
| Kingdom: | Plantae |
| Division: | Bryophyta |
| Class: | Bryopsida |
| Subclass: | Bryidae |
| Order: | Hypnales |
| Family: | Pylaisiaceae |
| Genus: | Ptilium |
| Species | |
See text | |
Ptilium is a genus of mosses with very broad worldwide occurrence. This genus is within the family Hypnaceae, [1] [2] in the class Bryopsida, subclass Bryidae and order Hypnales.
Some of these species occur on the floor of Canadian boreal forests; an example of this occurrence is within the black spruce/feathermoss climax forest, often having moderately dense canopy and featuring a forest floor of feathermosses including, according to Hogan, Hylocomium splendens , Pleurozium schreberi and Ptilium crista-castrensis . [3]
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophytasensu stricto. Bryophyta may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hornworts. Mosses typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically 0.2–10 cm (0.1–3.9 in) tall, though some species are much larger. Dawsonia, the tallest moss in the world, can grow to 50 cm (20 in) in height. There are approximately 12,000 species.
Fissidens adianthoides, the maidenhair pocketmoss, is a moss in the family Fissidentaceae. It was first collected by Hedwig in 1801.
Takakia is a genus of two species of mosses known from western North America and central and eastern Asia. The genus is placed as a separate family, order and class among the mosses. It has had a history of uncertain placement, but the discovery of sporophytes clearly of the moss-type firmly supports placement with the mosses.
Andreaeaceae is a family of mosses which includes two genera, Andreaea, containing about 100 species, and the genus Acroschisma. The Andreaeaceae prefer rocky habitats ranging from tropical to arctic climates, on which they form tufted colonies, typically with reddish to blackish shoots. The capsules lack the peristome mechanism and dehisce longitudinally to release the spores, resulting in a paper-lantern appearance.
The Bryopsida constitute the largest class of mosses, containing 95% of all moss species. It consists of approximately 11,500 species, common throughout the whole world.
Pleurozium schreberi, the red-stemmed feathermoss or Schreber's big red stem moss, is a moss with a loose growth pattern. The root name pleuro comes from the Latin for ribs, possibly describing how the parts branch from the stem.
Krummholz — also called knieholz — is a type of stunted, deformed vegetation encountered in the subarctic and subalpine tree line landscapes, shaped by continual exposure to fierce, freezing winds. Under these conditions, trees can only survive where they are sheltered by rock formations or snow cover. As the lower portion of these trees continues to grow, the coverage becomes extremely dense near the ground. In Newfoundland and Labrador, the formation is known as tuckamore. Krummholz trees are also found on beaches such as the Oregon coast, where trees can become much taller than their subalpine cousins.
Acritodon is a genus of moss in the family Hypnaceae.
Pottiales is an order of mosses in the subclass Dicranidae.
Andreaeobryum, the Mossy Cowl Moss, is a genus of moss with a single species Andreaeobryum macrosporum, endemic to Alaska and western Canada. The genus is placed as a separate family, order and class among the mosses.
Bryales is an order of mosses.
Hypnales is the botanical name of an order of Bryophyta or leafy mosses. This group is sometimes called feather mosses, referring to their freely branched stems. The order includes more than 40 families and more than 4,000 species, making them the largest order of mosses.
Hylocomium splendens, commonly known as glittering woodmoss, splendid feather moss, stairstep moss, and mountain fern moss, is a perennial clonal moss with a widespread distribution in Northern Hemisphere boreal forests. It is commonly found in Europe, Russia, Alaska and Canada, where it is often the most abundant moss species. It also grows in the Arctic tundra and further south at higher elevations in, for example, northern California, western Sichuan, East Africa, Australia, New Zealand and the West Indies. In Scotland it is a characteristic species of the Caledonian Forest. Under the UK's national vegetation classification system, pinewood community W18 is named as "Pinus sylvestris-Hylocomium splendens woodland", indicating its significance in this ecosystem.
Hypnaceae is a large family of moss with broad worldwide occurrence in the class Bryopsida, subclass Bryidae and order Hypnales. Genera include Hypnum, Phyllodon, and Taxiphyllum.
Ptilium crista-castrensis, the knights plume moss or ostrich-plume feathermoss, is a moss species within the family Pylaisiaceae, in the class Bryopsida, subclass Bryidae and order Hypnales.
The biogeoclimatic zones of British Columbia are units of a classification system used by the British Columbia Ministry of Forests for the Canadian province's fourteen different broad, climatic ecosystems. The classification system, termed Biogeoclimatic Ecosystem Classification, exists independently of other ecoregion systems, one created by the World Wildlife Fund and the other in use by Environment Canada, which is based on one created by the Commission for Environmental Cooperation (CEC) and also in use by the US Environmental Protection Agency (EPA). The system of biogeoclimatic ecosystem classification was partly created for the purpose of managing forestry resources, but is also in use by the British Columbia Ministry of Environment and Climate Change Strategy and other provincial agencies. A biogeoclimatic zone is defined as "a geographic area having similar patterns of energy flow, vegetation and soils as a result of a broadly homogenous macroclimate."
Dicranoloma is a genus of mosses in the family Dicranaceae. The Dicranoloma mosses are distributed in the Southern Hemisphere, while the Dicranum mosses are found in the Northern Hemisphere. Species within this genus are dioicous. Another genus in this family is Campylopus. Example occurrences of the genus Dicranoloma is in the form of mats on beech/podocarp forest floors of New Zealand's northern South Island. Dicranoloma dicarpum has a wide distribution in both hemispheres.
Makinoa crispata is the only species of liverwort in the genus Makinoa and family Makinoaceae. The genus Verdoornia was formerly included in this family, but has been transferred to the family Aneuraceae on the basis of recent cladistic analysis of genetic sequences.
Catoscopium is a genus of haplolepidous mosses (Dicranidae) in the monotypic family Catoscopiaceae .
Saelania is a genus of mosses in the monotypic family Saelaniaceae in subclass Dicranidae. The genus was previously placed in family Ditrichaceae. Saelania is named after Finnish botanist Thiodolf Saelan.
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