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391:. Additionally, the leaves will curve and then twist around the stem when conditions become too dry, this being another xeromorphic adaptation. It is speculated that the teeth along the leaf's edge may aid in this process, or perhaps also that they help discourage small invertebrates from attacking the leaves.
304:
Haircap moss gets its name from the hairs that cover, or cap, the calyptra where each spore case is held (1). Looking down, haircap moss has a star-shaped appearance due to its pointed leaves arranged spirally at right angles around a stiff stem (3). It is generally dark green in color and grows 4 –
378:
have more highly differentiated photosynthetic tissue. This is an example of a xeromorphic adaption, an adaptation for dry conditions. Moist air is trapped in between the rows of lamellae, while the larger terminal cells act to contain moisture and protect the photosynthetic cells. This minimises
305:
20 cm tall. The average life span of this moss is three to five years, though the longest have lived up to ten, and the moss can remain intact for long periods after dead.
176:, meaning "hair". This name was used in ancient times to refer to plants with fine, hairlike parts, including mosses, but this application specifically refers to the hairy
647:
Bell, N. E.; Hyvonen, J. (2010). "A phylogenetic circumscription of
Polytrichastrum (Polytrichaceae): Reassessment of sporophyte morphology supports molecular phylogeny".
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water loss as relatively little tissue is directly exposed to the environment, but allows for enough gas exchange for photosynthesis to take place. The
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423:(which controls spore release). However, molecular and morphological data from 2010 support moving some species back into
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lamellae on the upper surfaces of the leaves. The leaves of most mosses are simply a single plate of cells, but those of
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401:, having separate male and female plants. The reproductive branches arise from the apex of the main gametophyte axis.
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329:, which makes up the central cylinder of stem tissue. It consists of cells with a relatively wide diameter called
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701:"Phylogeny of the moss class Polytrichopsida (BRYOPHYTA): Generic-level structure and incongruent gene trees"
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218:— has broad, entire, and sharply inflexed leaf margins that enclose the lamellae on the upper leaf surface.
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show clear differentiation of water conducting tissue. One of these water conducting tissues is termed the
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are endohydric, meaning water is conducted from the base of the plant. While mosses are considered
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showing parallel photosynthetic lamellae at 400x magnification. The green cells contain
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between the lamellae can host a number of microscopic organisms such as parasitic
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found on young sporophytes. A similar naming related to hair appears in
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211:— has narrow, toothed, and relatively erect leaf margins. The other —
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Another characteristic feature of the genus is its parallel
152:— which contains approximately 70 species that have a
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characters. The scientific name is derived from the
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586:Crum, Howard Alvin; Anderson, Lewis Edward (1981),
590:, Columbia University Press, pp. 1281–1282,
341:in higher plants. The other tissue is called
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16:Genus of mosses in the family Polytrichaceae
272:. Unsourced material may be challenged and
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292:Learn how and when to remove this message
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705:Molecular Phylogenetics & Evolution
623:, University of Paisley, archived from
575:, vol. 27, Oxford University Press
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419:in 1971 based on the structure of the
333:, which conduct water. This tissue is
776:BLWG Verspreidingsatlas Mossen online
7:
993:d070e133-a8a7-4fb9-abcc-925d0403cd0c
270:adding citations to reliable sources
200:. There are two major sections of
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160:has a number of closely related
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588:Mosses of Eastern North America
567:Smith Merrill, Gary L. (2007),
682:1. Polytrichastrum G. L. Smith
1:
699:Bell, NE; Hyvönen, J (2010).
1078:Taxa named by Johann Hedwig
717:10.1016/j.ympev.2010.02.004
356:Cross section of a leaf of
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649:American Journal of Botany
532:Polytrichum sphaerothecium
613:Silverside, A.J. (2005),
439:Polytrichum appalachianum
154:cosmopolitan distribution
53:Scientific classification
51:
39:
30:
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616:Biodiversity Reference:
504:Polytrichum pallidisetum
525:Polytrichum sexangulare
474:Polytrichum juniperinum
467:Polytrichum hyperboreum
687:Flora of North America
573:Flora of North America
511:Polytrichum papillatum
483:Polytrichum longisetum
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172:, meaning "many", and
518:Polytrichum piliferum
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204:species. The first —
546:Polytrichum swartzii
539:Polytrichum strictum
497:Polytrichum ohioense
460:Polytrichum formosum
313:Mosses in the genus
266:improve this section
227:Polytrichum formosum
661:10.3732/ajb.0900161
618:Polytrichum commune
490:Polytrichum lyallii
453:Polytrichum commune
446:Polytrichum alpinum
415:was separated from
359:Polytrichum commune
319:non-vascular plants
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196:, wife of the god
144:— commonly called
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1001:Open Tree of Life
791:Taxon identifiers
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194:Norse Mythology
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90:Polytrichopsida
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405:Classification
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282:September 2021
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140:is a genus of
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627:on 2005-12-28
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569:"Polytrichum"
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251:This section
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186:haddr silfjar
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166:Ancient Greek
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397:species are
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364:chloroplasts
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264:Please help
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156:. The genus
149:
146:haircap moss
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120:
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42:gametophytes
24:
18:
1073:Moss genera
926:iNaturalist
829:Polytrichum
823:Wikispecies
799:Polytrichum
755:Polytrichum
425:Polytrichum
417:Polytrichum
395:Polytrichum
376:Polytrichum
323:Polytrichum
321:, those of
315:Polytrichum
225:Anatomy of
208:Polytrichum
202:Polytrichum
188:, "hair of
162:sporophytic
158:Polytrichum
137:Polytrichum
121:Polytrichum
25:Polytrichum
1062:Categories
778:(in Dutch)
631:2008-02-16
554:References
409:The genus
309:Physiology
234:Appearance
76:Division:
46:antheridia
421:peristome
335:analogous
253:does not
182:Old Norse
178:calyptras
150:hair moss
80:Bryophyta
66:Kingdom:
1032:35001001
1027:Tropicos
850:BioLib:
814:Q1544166
808:Wikidata
725:20152915
669:21622419
399:dioicous
389:rotifers
331:hydroids
213:section
206:section
106:Family:
44:bearing
944:1018133
905:2683053
431:Species
343:leptome
327:hydrome
274:removed
259:sources
116:Genus:
96:Order:
86:Class:
70:Plantae
1019:POLYT5
1014:PLANTS
1006:821354
990:NZOR:
892:126484
843:120507
723:
667:
594:
347:phloem
229:plant.
168:words
142:mosses
957:15758
939:IRMNG
931:67912
918:19065
879:1PTYG
866:88677
853:61351
620:Hedw.
385:fungi
339:xylem
174:thrix
170:polys
127:Hedw.
40:Male
983:3212
978:NCBI
952:ITIS
913:GRIN
900:GBIF
874:EPPO
838:APNI
721:PMID
665:PMID
592:ISBN
387:and
257:any
255:cite
198:Thor
1040:WFO
965:NBN
887:FNA
861:EoL
713:doi
657:doi
337:to
268:by
190:Sif
148:or
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762:^
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571:,
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289:(
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280:(
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262:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
