View source for Amoreuxia ← Amoreuxia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Amoreuxia |accepted_authority=de Candolle in A. P. de Candolle and A. L. P. P. de Candolle |publications={{Treatment/Publication |title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. |place=2: 638. 1825 |year=1825 }} |common_names=Yellowshow |basionyms= |synonyms= |hierarchy=Cochlospermaceae;Amoreuxia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cochlospermaceae]]</div><div class="higher-taxon"><small>genus</small>[[Amoreuxia]]</div></div> |etymology=for Pierre-Joseph Amoreux, 1741 – 1824, French physician and naturalist |volume=Volume 6 |mention_page=page 376, 378 |treatment_page=page 377 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="root width;root architecture;root texture"><b>Roots </b>(xylopodia) thick, tuberous or woody.</span> <span class="statement" id="st-d0_s1" data-properties="stem some measurement;stem pubescence;stem pubescence"><b>Stems </b>to 60 cm, glabrous or hairy.</span> <span class="statement" id="st-d0_s2" data-properties="leaf architecture"><b>Leaves </b>long-petiolate;</span> <span class="statement" id="st-d0_s3" data-properties="stipule prominence;stipule coloration">stipules inconspicuous, brown;</span> <span class="statement" id="st-d0_s4" data-properties="blade shape;blade quantity;petal shape;mark quantity;mark coloration;mark coloration">blade suborbiculate to reniform, 5 or 7 (9) -lobed petals with 2 conspicuous red to purple marks at bases;</span> <span class="statement" id="st-d0_s5" data-properties="set quantity;set growth form;filament length or size;anther coloration;filament height or length or size;anther coloration;anther coloration">stamens in 2 dimorphic sets, filaments of proximal set longer with cream to dark red anthers, filaments of distal set shorter with yellow or yellow-cream anthers;</span> <span class="statement" id="st-d0_s6" data-properties="">anthers 2-pored;</span> <span class="statement" id="st-d0_s7" data-properties="ovary pubescence">ovary usually pubescent;</span> <span class="statement" id="st-d0_s8" data-properties="">style usually surpassing stamens.</span> <span class="statement" id="st-d0_s9" data-properties="capsule orientation;capsule shape"><b>Capsules </b>pendulous, oblong-obovoid or ovoid to ellipsoid.</span> <span class="statement" id="st-d0_s10" data-properties="seed pubescence;seed pubescence"><b>Seeds </b>glabrous or pilose, hairs sometimes spinelike.</span> <span class="statement" id="st-d0_s11" data-properties="hair shape;x chromosome quantity">x = 6.</span><!-- -->{{Treatment/Body |distribution=sw United States;Mexico;West Indies (Curaçao);Central America;South America (Colombia);South America (Peru) |discussion=<p>Species 4 (3 in the flora).</p><!-- --><p>The one species of Amoreuxia not in the flora area is A. malvifolia, which occurs in the Mexican states of Chihuahua and Durango.</p><!-- --><p>Most of the species of Amoreuxia have been important food plants for indigenous tribes of northern Mexico and southwestern United States (W. C. Hodgson 2001; H. H. Poppendieck 1980).</p><!-- --><p>Amoreuxia is usually characterized as herbaceous, despite having slightly woody aerial parts and a woody subterranean organ. The woody subterranean organs, known as xylopodia, are made up of rootlike stems. The roots originate from below the xylopodium. They are similar in size and shape to thick carrots; they are brownish outside and creamy white inside.</p><!-- --><p>The species of Amoreuxia are very similar. To separate them, leaf, fruit, and seed characters can generally be used reliably; flower characters appear to be relatively uniform across species (R. McVaugh 2001). According to H. H. Poppendieck (1980), it is probable that Amoreuxia is a tropical taxon that moved northward into Central America and southern North America in relatively recent times with a secondary center of diversification in northern Mexico. Poppendieck hypothesized that the scattered and apparently relictual distribution of A. palmatifida is evidence that it may be most closely related to the primitive species of the genus from which all the currently known species may have evolved. This hypothesis is not strongly supported by the interesting disjunct distributions of A. wrightii in Peru and in Curaçao and the molecular clock data which indicate an earlier divergence for A. wrightii (S. B. Johnson-Fulton 2014).</p><!-- --><p>The flowers of Amoreuxia are very bright and easy to spot in the field; because they open early and usually close by late morning or early afternoon, it is best to search for this genus in the morning.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Leaf blades 5(7)-lobed, lobes subrhombic, apex rounded to acute, tooth of central lobe apex most distal; seeds glabrous. |[[Amoreuxia wrightii|Amoreuxia wrightii]] |-id=key-0-1 |1 |Leaf blades 7(9)-lobed, lobes obovate, spatulate, or linear, apex usually truncate to slightly obtuse, sometimes emarginate, 3–5 teeth of central lobe apex usually equally distal; seeds sparsely pilose or hispid, hairs sometimes spinelike |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Capsules broadly ovoid, 2–4 cm; seeds reniform; ovaries densely short-haired lanate to tomentose or puberulent; stems and petioles subglabrous to sparsely lanulose-puberulent. |[[Amoreuxia palmatifida|Amoreuxia palmatifida]] |-id=key-0-2 |2 |Capsules ellipsoid, 5–8 cm; seeds globose; ovaries densely silky-pilose; stems and petioles pilose (hairs wavy, slightly tangled). |[[Amoreuxia gonzalezii|Amoreuxia gonzalezii]] |} </div></div><!-- -->{{#Taxon: name=Amoreuxia |authority=de Candolle in A. P. de Candolle and A. L. P. P. de Candolle |rank=genus |parent rank=family |synonyms= |basionyms= |family=Cochlospermaceae |distribution=sw United States;Mexico;West Indies (Curaçao);Central America;South America (Colombia);South America (Peru) |reference=None |publication title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. |publication year=1825 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V6/V6_699.xml |genus=Amoreuxia |anther coloration=yellow-cream;yellow;cream;dark red |blade quantity=5 |blade shape=suborbiculate;reniform |capsule orientation=pendulous |capsule shape=ovoid;ellipsoid |filament height or length or size=shorter |filament length or size=longer |hair shape=spinelike |leaf architecture=long-petiolate |mark coloration=red;purple |mark quantity=2 |ovary pubescence=pubescent |petal shape=7(9)-lobed |root architecture=tuberous |root texture=woody |root width=thick |seed pubescence=pilose;glabrous |set growth form=dimorphic |set quantity=2 |stem pubescence=hairy;glabrous |stem some measurement=0cm;60cm |stipule coloration=brown |stipule prominence=inconspicuous |x chromosome quantity=6 }}<!-- -->[[Category:Treatment]][[Category:Cochlospermaceae]] Templates used on this page: Template:Cochlospermaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Amoreuxia.