View source for Athysanus ← Athysanus 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=Athysanus |accepted_authority=Greene |publications={{Treatment/Publication |title=Bull. Calif. Acad. Sci. |place=1: 72. 1885 |year=1885 }} |basionyms= |synonyms={{Treatment/ID/Synonym |name=Heterodraba |authority=Greene |rank=genus }} |hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Athysanus |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Arabideae]]</div><div class="higher-taxon"><small>genus</small>[[Athysanus]]</div></div> |etymology=Greek a- , without, and thysanos, fringe, alluding to fruit margin |volume=Volume 7 |mention_page=page 237, 238, 241 |treatment_page=page 267 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="">Annuals;</span> <span class="statement" id="st-d0_s1" data-properties="">not scapose;</span> <span class="statement" id="st-d0_s2" data-properties="whole-organism architecture;whole-organism pubescence;whole-organism pubescence;whole-organism duration;trichome architecture;trichome arrangement">glabrous or pubescent, trichomes simple mixed with short-stalked, forked, 3-rayed, or cruciform ones.</span> <span class="statement" id="st-d0_s3" data-properties="stem orientation;stem architecture"><b>Stems </b>(few from base), ascending, branched.</span> <span class="statement" id="st-d0_s4" data-properties=""><b>Leaves </b>basal and cauline;</span> <span class="statement" id="st-d0_s5" data-properties="leaf position;leaf position;leaf architecture;leaf architecture">petiolate or sessile;</span> <span class="statement" id="st-d0_s6" data-properties="basal leaf arrangement;basal leaf architecture;blade margin architecture or shape;blade margin architecture or shape">basal not rosulate, shortly petiolate, blade margins entire or dentate;</span> <span class="statement" id="st-d0_s7" data-properties="cauline leaf architecture;cauline leaf architecture;margin architecture or shape;margin architecture or shape">cauline shortly petiolate or sessile, blade (base not auriculate), margins entire or dentate.</span> <span class="statement" id="st-d0_s8" data-properties=""><b>Racemes </b>(corymbose, several-flowered, secund, lax), considerably elongated in fruit.</span> <span class="statement" id="st-d0_s9" data-properties="raceme length;raceme orientation;raceme orientation;raceme size;raceme size"><b>Fruiting </b>pedicels recurved or reflexed, slender or stout, (glabrous or pubescent).</span> <span class="statement" id="st-d0_s10" data-properties=""><b>Flowers </b>(cleistogamous and/or chasmogamous);</span> <span class="statement" id="st-d0_s11" data-properties="sepal orientation;sepal shape;sepal position;sepal architecture or shape">sepals suberect, oblong, lateral pair not saccate basally, (glabrous or pubescent);</span> <span class="statement" id="st-d0_s12" data-properties="petal coloration;petal shape;petal shape;claw prominence">petals white, (usually rudimentary, or well-developed and exceeding sepals, rarely absent), spatulate or oblong, claw indistinct;</span> <span class="statement" id="st-d0_s13" data-properties="stamen size">stamens subequal;</span> <span class="statement" id="st-d0_s14" data-properties="filament shape;filament shape">filaments slightly dilated or not basally;</span> <span class="statement" id="st-d0_s15" data-properties="anther shape">anthers ovate to globose;</span> <span class="statement" id="st-d0_s16" data-properties="nectar gland position">nectar glands lateral, each side of lateral stamens.</span> <span class="statement" id="st-d0_s17" data-properties="silicle dehiscence;silicle dehiscence;silicle architecture;silicle shape;silicle shape;silicle architecture;silicle shape;silicle architecture"><b>Fruits </b>(pendulous), silicles, indehiscent or very tardily dehiscent, sessile, usually orbicular or obovate to elliptic, rarely oblong, twisted or flattened, latiseptate;</span> <span class="statement" id="st-d0_s18" data-properties="valve architecture;vein prominence;vein pubescence;vein pubescence">valves each not veined or veins prominent, pubescent or glabrous;</span> <span class="statement" id="st-d0_s19" data-properties="replum shape">replum rounded;</span> <span class="statement" id="st-d0_s20" data-properties="septum presence;septum architecture">septum absent or complete;</span> <span class="statement" id="st-d0_s21" data-properties="ovule quantity">ovules 2–12 per ovary;</span> <span class="statement" id="st-d0_s22" data-properties="style prominence;style fusion">style obsolete or distinct;</span> <span class="statement" id="st-d0_s23" data-properties="stigma architecture or shape">stigma capitate.</span> <span class="statement" id="st-d0_s24" data-properties="seed architecture or arrangement;seed shape;seed architecture;seed shape"><b>Seeds </b>uniseriate, flattened, not winged, oblong;</span> <span class="statement" id="st-d0_s25" data-properties="seed-coat coating">seed-coat not mucilaginous when wetted;</span> <span class="statement" id="st-d0_s26" data-properties="cotyledon arrangement">cotyledons accumbent.</span><!-- -->{{Treatment/Body |distribution=w North America;nw Mexico |discussion=<p>Species 2 (2 in the flora).</p><!-- --><p>Athysanus and Heterodraba are strikingly similar in almost all aspects except for the differences in the key below. Although R. C. Rollins (1993) mentioned nothing about their relationship, he keyed them out in one couplet. Their species are more closely related to each other than to other Brassicaceae. In my opinion, the recognition of two independent monotypic genera obscures their sister phylogenetic relationship. Both genera were described simultaneously by Greene, and since W. L. Jepson (1901) transferred the type of Heterodraba to Athysanus, the latter name has nomenclatural priority.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Fruits 1-locular, not twisted; valves usually pubescent, rarely glabrous, some or all trichomes hooked; seeds 1. |[[Athysanus pusillus|Athysanus pusillus]] |-id=key-0-1 |1 |Fruits 2-locular, flat or slightly twisted; valves glabrous or pubescent, trichomes not hooked; seeds often 2+. |[[Athysanus unilateralis|Athysanus unilateralis]] |} </div></div><!-- -->{{#Taxon: name=Athysanus |author=Ihsan A. Al-Shehbaz |authority=Greene |rank=genus |parent rank=tribe |synonyms=Heterodraba |basionyms= |family=Brassicaceae |distribution=w North America;nw Mexico |reference=None |publication title=Bull. Calif. Acad. Sci. |publication year=1885 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V7/V7_356.xml |tribe=Brassicaceae tribe Arabideae |genus=Athysanus |anther shape=ovate;globose |basal leaf architecture=petiolate |basal leaf arrangement=not rosulate |blade margin architecture or shape=dentate;entire |cauline leaf architecture=sessile;petiolate |claw prominence=indistinct |cotyledon arrangement=accumbent |filament shape=not basally;dilated |leaf architecture=sessile;petiolate |leaf position=cauline;basal |margin architecture or shape=dentate;entire |nectar gland position=lateral |ovule quantity=2;12 |petal coloration=white |petal shape=oblong;spatulate |raceme length=elongated |raceme orientation=reflexed;recurved |raceme size=stout;slender |replum shape=rounded |seed architecture=not winged |seed architecture or arrangement=uniseriate |seed shape=oblong;flattened |seed-coat coating=mucilaginous |sepal architecture or shape=saccate |sepal orientation=suberect |sepal position=lateral |sepal shape=oblong |septum architecture=complete |septum presence=absent |silicle architecture=latiseptate;twisted;sessile |silicle dehiscence=dehiscent;indehiscent |silicle shape=flattened;oblong;obovate;elliptic |stamen size=subequal |stem architecture=branched |stem orientation=ascending |stigma architecture or shape=capitate |style fusion=distinct |style prominence=obsolete |trichome architecture=simple |trichome arrangement=mixed |valve architecture=not veined |vein prominence=prominent |vein pubescence=glabrous;pubescent |whole-organism architecture=not scapose |whole-organism duration=annual |whole-organism pubescence=pubescent;glabrous }}<!-- -->[[Category:Treatment]][[Category:Brassicaceae tribe Arabideae]] Templates used on this page: Template:Brassicaceae (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/ID/Synonym (view source) Template:Treatment/Publication (view source) Return to Athysanus.