View source for Urtica ← Urtica 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=Urtica |accepted_authority=Linnaeus |publications={{Treatment/Publication |title=Sp. Pl. |place=2: 983. 175 }}, {{Treatment/Publication |title=Gen. Pl. ed. |place=5, 423. 1754 |year=1754 }} |common_names=Nettle;ortie |basionyms= |synonyms= |hierarchy=Urticaceae;Urtica |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Urticaceae]]</div><div class="higher-taxon"><small>genus</small>[[Urtica]]</div></div> |etymology=Latin urtica, nettle; derived from Latin uro, to burn |volume=Volume 3 |mention_page= |treatment_page= }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism duration;whole_organism growth form;hair toxicity"><b>Herbs,</b> annual or perennial, with stinging and nonstinging hairs on same plant.</span> <span class="statement" id="st-d0_s1" data-properties="stem architecture;stem architecture;stem orientation;stem orientation;stem orientation;stem orientation;stem orientation"><b>Stems </b>simple or branched, erect, ascending, or sprawling.</span> <span class="statement" id="st-d0_s2" data-properties="leaf arrangement"><b>Leaves </b>opposite;</span> <span class="statement" id="st-d0_s3" data-properties="stipule presence">stipules present.</span> <span class="statement" id="st-d0_s4" data-properties="leaf-blade shape;leaf-blade shape;leaf-blade shape;leaf-blade shape;leaf-blade shape;leaf-blade shape;margin architecture or shape"><b>Leaf-</b>blades elliptic, lanceolate, ovate, or orbiculate, margins dentate to serrate;</span> <span class="statement" id="st-d0_s5" data-properties="cystolith shape;cystolith shape">cystoliths rounded or ± elongate.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence position;inflorescence architecture or arrangement;inflorescence arrangement"><b>Inflorescences </b>axillary, lax, of cymes arranged in racemes or panicles.</span> <span class="statement" id="st-d0_s7" data-properties="flower reproduction;flower architecture;flower architecture;inflorescence arrangement"><b>Flowers </b>unisexual, staminate and pistillate flowers in loose to tight clusters in separate inflorescences or intermixed in same inflorescence on same or different plants;</span> <span class="statement" id="st-d0_s8" data-properties="bract shape;hair quantity;hair shape">bracts narrowly triangular to lanceolate, lacking hooked hairs.</span> <span class="statement" id="st-d0_s9" data-properties="flower architecture;tepal quantity;tepal fusion;tepal variability"><b>Staminate </b>flowers: tepals 4, distinct, equal;</span> <span class="statement" id="st-d0_s10" data-properties="flower architecture;stamen quantity">stamens 4;</span> <span class="statement" id="st-d0_s11" data-properties="flower architecture;pistillode shape">pistillode cuplike.</span> <span class="statement" id="st-d0_s12" data-properties="flower architecture;tepal quantity;tepal fusion;tepal position;tepal quantity;tepal variability;tepal position;tepal quantity;tepal size;hair shape"><b>Pistillate </b>flowers: tepals 4, distinct, inner 2 equal to achene, outer 2 smaller, without hooked hairs;</span> <span class="statement" id="st-d0_s13" data-properties="flower architecture;staminode presence">staminodes absent;</span> <span class="statement" id="st-d0_s14" data-properties="flower architecture;style presence">style absent;</span> <span class="statement" id="st-d0_s15" data-properties="flower architecture;stigma arrangement or pubescence;stigma duration;stigma duration">stigma tufted, persistent or deciduous.</span> <span class="statement" id="st-d0_s16" data-properties=""><b>Achenes </b>sessile, laterally compressed, ovoid or deltoid, loosely enclosed by inner tepals.</span> <span class="statement" id="st-d0_s17" data-properties="achene architecture;achene shape;achene shape;achene shape;x chromosome quantity;x chromosome quantity">x = 12, 13.</span><!-- -->{{Treatment/Body |distribution=Nearly worldwide |discussion=<p>Species 45 (4 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 |Plants perennial, rhizomatous; inflorescences either staminate or pistillate. |[[Urtica dioica|Urtica dioica]] |-id=key-0-1 |1 |Plants annual, with taproot; inflorescences with both staminate and pistillate flowers (or staminate and pistillate flowers in separate inflorescences in Urtica gracilenta). |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Leaf blades elliptic to broadly elliptic, widest near middle, base cuneate; achenes 1.5–1.8mm. |[[Urtica urens|Urtica urens]] |-id=key-0-2 |2 |Leaf blades narrowly ovate to orbiculate, usually widest below middle or near base or occasionally cuneate at base, base ± cordate to truncate or rounded, sometimes distal leaves ovate-lanceolate to lanceolate; achenes 1.2–1.6mm. |[[#key-0-3| > 3]] |-id=key-0-3 |3 |Inflorescences ±globose; staminate and pistillate flowers intermixed in same inflorescence. |[[Urtica chamaedryoides|Urtica chamaedryoides]] |-id=key-0-3 |3 |Inflorescences elongate; staminate and pistillate flowers in separate inflorescences, or a few pistillate flowers at apex of staminate inflorescences. |[[Urtica gracilenta|Urtica gracilenta]] |} </div></div><!-- -->{{#Taxon: name=Urtica |authority=Linnaeus |rank=genus |parent rank=family |synonyms= |basionyms= |family=Urticaceae |distribution=Nearly worldwide |reference=None |publication title=Sp. Pl.;Gen. Pl. ed. |publication year=;1754 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V3/V3_329.xml |genus=Urtica |achene architecture=sessile |achene shape=deltoid;ovoid;compressed |bract shape=narrowly triangular;lanceolate |cystolith shape=elongate;rounded |flower architecture=pistillate;pistillate;pistillate;pistillate;staminate;staminate;staminate;pistillate;staminate |flower reproduction=unisexual |hair quantity=lacking |hair shape=hooked;hooked |hair toxicity=stinging |inflorescence architecture or arrangement=lax |inflorescence arrangement=separate;arranged |inflorescence position=axillary |leaf arrangement=opposite |leaf-blade shape=orbiculate;ovate;orbiculate;ovate;lanceolate;elliptic |margin architecture or shape=dentate;serrate |pistillode shape=cuplike |stamen quantity=4 |staminode presence=absent |stem architecture=branched;simple |stem orientation=sprawling;ascending;sprawling;ascending;erect |stigma arrangement or pubescence=tufted |stigma duration=deciduous;persistent |stipule presence=absent |style presence=absent |tepal fusion=distinct;distinct |tepal position=outer;inner |tepal quantity=2;2;4;4 |tepal size=smaller |tepal variability=equal;equal |whole_organism duration=perennial;annual |whole_organism growth form=herb |x chromosome quantity=13;12 }}<!-- -->[[Category:Treatment]][[Category:Urticaceae]] Templates used on this page: 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) Template:Urticaceae (view source) Return to Urtica.