View source for Zygodon

{{Treatment/ID
|accepted_name=Zygodon
|accepted_authority=Hooker & Taylor
|publications={{Treatment/Publication
|title=Muscol. Brit.,
|place=70, plates 3 [upper left], 21 [upper left]. 1818
|year=1818
}}
|basionyms=
|synonyms=
|hierarchy=Orthotrichaceae;Zygodon
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orthotrichaceae]]</div><div class="higher-taxon"><small>genus</small>[[Zygodon]]</div></div>
|etymology=Greek zygon, yoke, alluding to 16 peristome teeth initially connate in pairs in some species
|volume=Volume 28
|mention_page=page 37, 38, 79, 80, 664, 665, 667
|treatment_page=page 78
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>small, in tufts or loose cushions. <b>Stems</b> erect to ascending, branches erect to ascending. <b>Leaves</b> loosely erect, irregularly twisted or curved around stem, sometimes undulate when dry, erect-spreading to squarrose-recurved when moist, oblong-lanceolate to linear-lanceolate, not rugose; base decurrent; margins entire, serrate or serrulate near apex; apex acute, usually apiculate; costa percurrent, ending near apex, or rarely excurrent; basal laminal cells subquadrate to rectangular; distal cells rounded-quadrate to rounded-hexagonal, 4–14 µm, smooth or densely multipapillose only over lumina, papillae 2–6 per cell, clavate; marginal cells not differentiated from basal. <b>Sexual</b> condition dioicous, autoicous, or synoicous; perichaetial leaves little different from stem leaves. <b>Seta</b> 3–13 mm. <b>Capsule</b> long-exserted, elliptic-oblong to fusiform, strongly 8-ribbed entire length, not constricted below mouth; stomata superficial; peristome double, single, or absent; exostome teeth 8, or 16 partially connate in 8 pairs, papillose; endostome segments 0, 8, or 16. <b>Calyptra</b> cucullate, conic, smooth, naked or rarely hairy, not plicate, covering distal portion of capsule. <b>Spores</b> isosporous.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;West Indies;Central America;South America;Europe;Asia;Africa;Pacific Islands (New Zealand);Australia.
|discussion=<p>Species ca. 90 (5 in the flora).</p><!--
--><p>Many species of <i>Zygodon</i> rarely produce sporophytes, and taxa are delimited on characters derived exclusively from the gametophyte. The genus is largely pantropical with several widespread temperate species. None of the species are found farther north than 60° N latitude. The leaves are keeled; the basal laminal cells are usually pale yellow; the capsules are 1–2 mm; and the spores are 11–22 µm.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Distal laminal cells smooth.
|[[Zygodon menziesii|Zygodon menziesii]]
|-id=key-0-1
|1
|Distal laminal cells papillose
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Leaves wide-spreading to squarrose-recurved when moist; apices bluntly acute, apiculus absent; distal laminal cells 4-9 µm, walls very thick; gemmae absent.
|[[Zygodon gracilis|Zygodon gracilis]]
|-id=key-0-2
|2
|Leaves spreading, ± recurved or rarely subsquarrose when moist; apices sharply acute, apiculus present; distal laminal cells 5-14 µm, walls somewhat thick; gemmae present
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Costal abaxial surface smooth or covered by cells only at apex; sexual condition synoicous or autoicous.
|[[Zygodon reinwardtii|Zygodon reinwardtii]]
|-id=key-0-3
|3
|Costal abaxial surface covered by cells distally; sexual condition dioicous
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Gemmae cylindric to fusiform, longitudinal walls absent; distal laminal cells 9-14 µm.
|[[Zygodon conoideus|Zygodon conoideus]]
|-id=key-0-4
|4
|Gemmae clavate, elliptic, or subcylindric, longitudinal walls present or absent; distal laminal cells 7-11 µm.
|[[Zygodon viridissimus|Zygodon viridissimus]]
|}
</div></div><!--

-->{{#Taxon:
name=Zygodon
|author=
|authority=Hooker & Taylor
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Orthotrichaceae
|distribution=North America;Mexico;West Indies;Central America;South America;Europe;Asia;Africa;Pacific Islands (New Zealand);Australia.
|reference=None
|publication title=Muscol. Brit.,
|publication year=1818
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V28/V28_122.xml
|genus=Zygodon
}}<!--

-->[[Category:Treatment]][[Category:Orthotrichaceae]]