Difference between revisions of "Gemmabryum sect. Caespitibryum"
Phytologia 91: 497. 2009.
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| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Bryum subsect. Caespitibryum | |name=Bryum subsect. Caespitibryum | ||
|authority=Podp ě ra | |authority=Podp ě ra | ||
| + | |rank=subsection | ||
| + | |publication_title=Rozpr. Č eské Akad. Cisa ř e Franti š ka Josefa V ě dy, T ř . | ||
| + | |publication_place=2, V ě dy Math. P ř ír. 10(2): 52. 1901 | ||
}} | }} | ||
|synonyms= | |synonyms= | ||
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|distribution=Nearly worldwide except Antarctica;boreal-temperate;Mediterranean climates. | |distribution=Nearly worldwide except Antarctica;boreal-temperate;Mediterranean climates. | ||
|discussion=<p>Species ca. 6 (3 in the flora).</p><!-- | |discussion=<p>Species ca. 6 (3 in the flora).</p><!-- | ||
| − | --><p>Section Caespitibryum includes Gemmabryum caespiticium and several narrowly defined segregates. The group is tentatively placed in Gemmabryum. In some respects the species are reminiscent of species in Ptychostomum sect. Cladodium, especially P. creberrimum. Plants of sect. Caespitibryum have acuminate leaf apices and red-brown capsules.</p> | + | --><p><i>Section</i> Caespitibryum includes <i>Gemmabryum caespiticium</i> and several narrowly defined segregates. The group is tentatively placed in <i>Gemmabryum</i>. In some respects the species are reminiscent of species in <i>Ptychostomum</i> sect. Cladodium, especially <i>P. creberrimum</i>. Plants of sect. Caespitibryum have acuminate leaf apices and red-brown capsules.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Gemmabryum sect. Caespitibryum | name=Gemmabryum sect. Caespitibryum | ||
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|authority=(Podpera) J. R. Spence | |authority=(Podpera) J. R. Spence | ||
|rank=section | |rank=section | ||
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|publication year=2009 | |publication year=2009 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_203.xml |
|genus=Gemmabryum | |genus=Gemmabryum | ||
|section=Gemmabryum sect. Caespitibryum | |section=Gemmabryum sect. Caespitibryum | ||
Latest revision as of 21:34, 5 November 2020
Plants small or large, pale green to red-green. Stems gemmiform to evenly foliate, sometimes in 2 or more clumps along stem, innovations and fertile stem leaves somewhat differentiated, innovations not julaceous; rhizoids red-brown to red. Leaves imbricate, sometimes slightly twisted when dry, ovate-lanceolate, concave; base not decurrent; margins entire to serrulate distally, limbidium present or sometimes absent; costa not reaching apex to long-excurrent; inflated group of pinkish subalar cells present on larger distal leaves of fertile stems; medial and distal laminal cells rectangular to hexagonal. Specialized asexual reproduction by deciduous brood branchlets in leaf axils, rarely by rhizoidal tubers. Sexual condition dioicous. Capsule nutant, pyriform, 2–3(–4) mm; hypophysis slender, gradually tapered to seta, not inflated and rugose; peristome well developed; endostome not adherent to exostome, basal membrane high, segments well developed, cilia long, appendiculate.
Distribution
Nearly worldwide except Antarctica, boreal-temperate, Mediterranean climates.
Discussion
Species ca. 6 (3 in the flora).
Section Caespitibryum includes Gemmabryum caespiticium and several narrowly defined segregates. The group is tentatively placed in Gemmabryum. In some respects the species are reminiscent of species in Ptychostomum sect. Cladodium, especially P. creberrimum. Plants of sect. Caespitibryum have acuminate leaf apices and red-brown capsules.
Selected References
None.
Lower Taxa
Key
| 1 | Plants small; leaves usually smaller than 1 mm; distal lamina hyaline with age; distal laminal cells short-rectangular to hexagonal, (2-)3-4:1; proximal cells abruptly quadrate, 1-2:1; costae variable, at least some long-excurrent, awns green to hyaline; specialized asexual reproduction unknown. | Gemmabryum kunzei |
| 1 | Plants large; leaves 0.5-2(-3) mm; distal lamina not or occasionally hyaline with age; distal laminal cells long-hexagonal, (3-)4-6:1; proximal cells abruptly quadrate to rectangular, 2-4:1 along costa; costae usually long-excurrent, awns brown, yellow-brown, or sometimes hyaline; specialized asexual reproduction by rhizoidal tubers or brood branchlets | > 2 |
| 2 | Leaves strongly concave; costal awns longer than 1/2 leaf length, often as long as leaf, denticulate; rhizoidal tubers absent. | Gemmabryum badium |
| 2 | Leaves weakly to moderately concave; costal awns usually shorter than 1/2 leaf length, smooth or rarely somewhat denticulate; rhizoidal tubers sometimes present. | Gemmabryum caespiticium |