View source for Blechnum

{{Treatment/ID
|accepted_name=Blechnum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 1077. 1753; Gen. Pl. ed. 5, 485, 1754
|year=1754
}}
|common_names=Deer ferns
|basionyms=
|synonyms=
|hierarchy=Blechnaceae;Blechnum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Blechnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Blechnum]]</div></div>
|etymology=Greek blechnon, an ancient name for ferns in general
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>terrestrial or rarely on rock. <b>Stems</b> creeping to ascending or erect, slender to stout, sometimes climbing [rarely subarborescent]; scales brown or black. <b>Leaves</b> monomorphic or variously dimorphic, cespitose to scattered. <b>Blades</b> pinnatifid to 1-pinnate, rarely simple or 2-pinnate. <b>Rachis</b> and costae glabrous, scaly, or hairy abaxially. <b>Veins</b> free, often forked. <b>Sori</b> borne on vascular commissures parallel to costae, 1 per side, normally uninterrupted, linear, continuous along length of costa. <b>Spores</b> with perine smooth to variously winged or rugose. <b>x</b> = 28, 29, 31, 32, 34, 36.</span><!--

-->{{Treatment/Body
|distribution=Mostly tropical;especially Southern Hemisphere.
|discussion=<p>Species ca. 220 (3 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves strongly dimorphic, fertile leaves notably more erect, longer, and with narrower pinnae than sterile leaves; sterile blades tapering at base.
|[[Blechnum spicant|Blechnum spicant]]
|-id=key-0-1
|1
|Leaves ± monomorphic, fertile leaves only slightly longer and somewhat contracted relative to sterile leaves; sterile blades ± truncate at base.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Blades 1-pinnate proximally and pinnatifid distally or pinnatifid nearly throughout, usually less than 50 cm; pinna margins ± entire.
|[[Blechnum occidentale var. minor|Blechnum occidentale var. minor]]
|-id=key-0-2
|2
|Blades 1-pinnate throughout, usually more than 50 cm; pinna margins ± evenly serrulate.
|[[Blechnum serrulatum|Blechnum serrulatum]]
|}
</div></div><!--

-->{{#Taxon:
name=Blechnum
|author=Clifton E. Nauman
|authority=Linnaeus
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Blechnaceae
|distribution=Mostly tropical;especially Southern Hemisphere.
|reference=None
|publication title=Sp. Pl.
|publication year=1754
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_97.xml
|genus=Blechnum
}}<!--

-->[[Category:Treatment]][[Category:Blechnaceae]]