View source for Eutrema

{{Treatment/ID
|accepted_name=Eutrema
|accepted_authority=R. Brown
|publications={{Treatment/Publication
|title=Chlor. Melvill.,
|place=9, plate A. 1823
|year=1823
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Neomartinella
|authority=Pilger
}} {{Treatment/ID/Synonym
|name=Platycraspedum
|authority=O. E. Schulz
}} {{Treatment/ID/Synonym
|name=Thellungiella
|authority=O. E. Schulz
}} {{Treatment/ID/Synonym
|name=Wasabia
|authority=Matsumura
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Eutremeae;Eutrema
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Eutremeae]]</div><div class="higher-taxon"><small>genus</small>[[Eutrema]]</div></div>
|etymology=Greek eu- , well, and trema, hole, alluding to perforation in fruit septum
|volume=Volume 7
|mention_page=page 226, 231, 233, 246
|treatment_page=page 555
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials; (caudex simple or branched), [rhizomatous]; not scapose. <b>Stems</b> erect or ascending [decumbent], unbranched or branched distally. <b>Leaves</b> basal and cauline; petiolate or sessile; basal rosulate or not, petiolate, blade margins usually entire or palmately lobed, rarely dentate or pinnatifid, (pinnately or palmately veined); cauline petiolate or sessile, blade (base cuneate or sagittate-amplexicaul), margins entire or repand [dentate, crenate], (pinnately or palmately veined, ultimate veins sometimes ending with apiculate callosities). <b>Racemes</b> (corymbose). <b>Fruiting</b> pedicels divaricate to ascending, slender or stout. <b>Flowers</b>: sepals ovate or oblong; petals usually spatulate, rarely obovate, claw not differentiated from blade, (apex obtuse to emarginate); stamens slightly tetradynamous; filaments slightly dilated basally; anthers ovate or oblong, (apex obtuse); nectar glands confluent, often subtending bases of stamens, median glands present or absent. <b>Fruits</b> sessile or shortly stipitate, linear or oblong [ovoid, lanceoloid], smooth or torulose, terete, slightly 4-angled, latiseptate, or angustiseptate; valves each with obscure or prominent midvein; replum rounded; septum complete or perforated; ovules [2–](6–)8–96 per ovary; stigma capitate. <b>Seeds</b> usually uniseriate, rarely biseriate, plump, not winged, oblong or ovoid; seed coat (usually obscurely reticulate, rarely foveolate or papillate), often not mucilaginous when wetted; cotyledons incumbent [rarely accumbent].</span><!--

-->{{Treatment/Body
|distribution=North America;c;e Asia (Himalayas).
|discussion=<p>Species 26 (2 in the flora).</p><!--
--><p>The fleshy rhizomes of the eastern Asian <i>Eutrema</i> japonicum (Siebold) Maximowicz are pungent and are the main source of true wasabi (W. H. Hodge 1974). Paste of horseradish (<i>Armoracia rusticana</i>) is often used as an inexpensive substitute.</p><!--
--><p>Molecular studies, combined with a critical evaluation of morphology, have shown that Thellungiella is nested within, and hardly distinct from, the earlier-published <i>Eutrema</i>, and therefore the two genera have been combined (I. A. Al-Shehbaz and S. I. Warwick 2005; Warwick et al. 2006).</p>
|tables=
|references={{Treatment/Reference
|id=al-shehbaz2005b
|text=Al-Shehbaz, I. A. and S. I. Warwick. 2005. A synopsis of Eutrema (Brassicaceae). Harvard Pap. Bot. 10: 129–135.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Perennials; cauline leaf blades: bases cuneate, not auriculate or sagittate; ovules (6-)8-12 (-14) per ovary.
|[[Eutrema edwardsii|Eutrema edwardsii]]
|-id=key-0-1
|1
|Annuals; cauline leaf blades: bases usually sagittate-amplexicaul, rarely auriculate; ovules 55-96 per ovary.
|[[Eutrema salsugineum|Eutrema salsugineum]]
|}
</div></div><!--

-->{{#Taxon:
name=Eutrema
|author=Ihsan A. Al-Shehbaz
|authority=R. Brown
|rank=genus
|parent rank=tribe
|synonyms=Neomartinella;Platycraspedum;Thellungiella;Wasabia
|basionyms=
|family=Brassicaceae
|distribution=North America;c;e Asia (Himalayas).
|reference=al-shehbaz2005b
|publication title=Chlor. Melvill.,
|publication year=1823
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V7/V7_890.xml
|tribe=Brassicaceae tribe Eutremeae
|genus=Eutrema
}}<!--

-->[[Category:Treatment]][[Category:Brassicaceae tribe Eutremeae]]