View source for Linaceae

{{Treatment/ID
|accepted_name=Linaceae
|accepted_authority=de Candolle ex Perleb
|publications=
|common_names=Flax Family
|basionyms=
|synonyms=
|hierarchy=Linaceae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Linaceae]]</div></div>
|volume=Volume 12
|mention_page=
|treatment_page=page 371
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs </b>or subshrubs [shrubs, trees, vines], annual, biennial, or perennial. <b>Leaves</b> alternate, opposite, or whorled, simple; stipules absent or present as small, dark, spheric glands; petiole usually absent, rarely present; blade margins entire, serrate, or denticulate; venation pinnate. <b>Inflorescences</b> terminal, racemes, panicles, or cymes (rarely thyrses or corymbs in <i>Linum</i>) [spikes]. <b>Flowers</b> bisexual; perianth and androecium hypogynous; hypanthium absent; sepals 4–5, connate basally [distinct]; petals 4–5, distinct or coherent basally, imbricate or convolute, bases sometimes with appendages; nectary extrastaminal; stamens 4–5 [10], connate basally, filament tube and petal bases adherent or adnate [free]; anthers dehiscing by longitudinal slits; pistil 1, 2–5-carpellate, ovary superior, 4–5-locular, placentation axile or apical-axile; ovules 2 per locule, anatropous; styles 2–5, distinct or partly connate; stigmas 2–5. <b>Fruits</b> capsules, dehiscence septicidal, or indehiscent or schizocarps breaking into 4 nutlets (<i>Sclerolinon</i>). <b>Seeds</b> 2 per locule, seed coat often mucilaginous.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;West Indies;Bermuda;Central America;South America;Eurasia;Africa;Atlantic Islands;Pacific Islands;Australia.
|discussion=<p>Genera 10–14, species ca. 260 (4 genera, 52 species in the flora).</p><!--
--><p>Two subfamilies are generally recognized in Linaceae, the mostly herbaceous, temperate Linoideae Arnott (8 genera, ca. 240 species), in which all the genera in the flora area are placed, and the woody, mostly tropical Hugonoideae Reveal. Based on molecular phylogenetic analysis, J. R. McDill et al. (2009) concluded that Linaceae is a monophyletic group, as is Linoideae.</p><!--
--><p>According to J. R. McDill (2009), Cliococca Babington, <i>Hesperolinon</i>, and <i>Sclerolinon</i> are nested within <i>Linum </i>sect.<i> Linopsis</i>, and collectively these are sister to <i>Radiola</i>; <i>Hesperolinon</i> and <i>Sclerolinon</i> are most closely related to Mexican and Central American species of <i>Linum</i>. McDill et al. (2009) noted that the relationships within this clade are not well-enough resolved or supported to warrant nomenclatural changes; McDill (2009) came to the same conclusion based on a much wider sample of species. The current generic circumscriptions are maintained here.</p>
|tables=
|references={{Treatment/Reference
|id=mcdill2009a
|text=McDill, J. R. 2009. Molecular Phylogenetic Studies in the Linaceae and Linum, with Implications for Their Systematics and Historical Biogeography. Ph.D. dissertation. University of Texas.
}}{{Treatment/Reference
|id=mcdill2009b
|text=McDill, J. R. et al. 2009. The phylogeny of Linum and Linaceae subfamily Linoideae, with implications for their systematics, biogeography, and evolution of heterostyly. Syst. Bot. 34: 386–405.
}}{{Treatment/Reference
|id=mcdill2011a
|text=McDill, J. R. and B. B. Simpson. 2011. Molecular phylogenetics of Linaceae with complete generic sampling and data from two plastid genes. Bot. J. Linn Soc. 165: 64–83.
}}{{Treatment/Reference
|id=rogers1975a
|text=Rogers, C. M. 1975. Relationships of Hesperolinon and Linum (Linaceae). Madroño 23: 153–159.
}}{{Treatment/Reference
|id=rogers1984b
|text=Rogers, C. M. 1984. Linaceae. In: N. L. Britton et al., eds. 1905+. North American Flora.... 47+ vols. New York. Ser. 2, part 12, pp. 1–54.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Sepals 4; petals 4.
|[[Radiola|Radiola]]
|-id=key-0-1
|1
|Sepals 5; petals 5.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Styles 5; fruits capsules, dehiscing into 5 or 10 segments.
|[[Linum|Linum]]
|-id=key-0-2
|2
|Styles 2–3; fruits capsules dehiscing into 4 or 6 segments, schizocarps breaking into 4 nutlets, or indehiscent.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Leaves: basal and proximal usually whorled, distal alternate or opposite; fruits capsules, dehiscing into 4 or 6 segments; styles 2–3, stigmas ± equal in width to styles; stipular glands present (exudate often red) or absent.
|[[Hesperolinon|Hesperolinon]]
|-id=key-0-3
|3
|Leaves: proximal opposite, distal sometimes alternate; fruits schizocarps, breaking into 4 nutlets, or indehiscent; styles 2, stigmas wider than styles; stipular glands absent.
|[[Sclerolinon|Sclerolinon]]
|}
</div></div><!--

-->{{#Taxon:
name=Linaceae
|author=Nancy R. Morin
|authority=de Candolle ex Perleb
|rank=family
|parent rank=
|synonyms=
|basionyms=
|family=Linaceae
|illustrator=John Myers
|illustration copyright=Flora of North America Association
|distribution=North America;Mexico;West Indies;Bermuda;Central America;South America;Eurasia;Africa;Atlantic Islands;Pacific Islands;Australia.
|reference=mcdill2009a;mcdill2009b;mcdill2011a;rogers1975a;rogers1984b
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_710.xml
}}<!--

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