View source for Jensia ← Jensia 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=Jensia |accepted_authority=B. G. Baldwin |publications={{Treatment/Publication |title=Novon |place=9: 464. 1999 |year=1999 }} |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Madiinae;Jensia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Madiinae]]</div><div class="higher-taxon"><small>genus</small>[[Jensia]]</div></div> |etymology=For Jens Christian Clausen, 1891–1969, Californian botanist |volume=Volume 21 |mention_page=page 255, 300, 302 |treatment_page=page 301 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole-organism some measurement;whole-organism duration"><b>Annuals,</b> 5–60 cm (self-incompatible).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation"><b>Stems </b>erect.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position"><b>Leaves </b>mostly cauline;</span> <span class="statement" id="st-d0_s3" data-properties="proximal leaf arrangement">proximal opposite (often crowded), distal alternate;</span> <span class="statement" id="st-d0_s4" data-properties="distal leaf arrangement;distal leaf architecture">sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;margin shape;margin shape;face pubescence">blades spatulate to linear, margins entire or toothed, faces hirsute to strigose (distal leaves sometimes stipitate-glandular as well).</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or arrangement;array architecture"><b>Heads </b>radiate, in ± umbelliform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="spine presence"><b>Peduncular </b>bracts: pit-glands, tack-glands, and/or spines 0.</span> <span class="statement" id="st-d0_s8" data-properties="involucre shape;involucre diameter"><b>Involucres </b>± obconic or urceolate to globose, 3–5 mm diam.</span> <span class="statement" id="st-d0_s9" data-properties="phyllary quantity;series quantity"><b>Phyllaries </b>2–12 in 1 series (lanceolate to lance-attenuate, herbaceous, each usually wholly enveloping a ray ovary, abaxially hirsute, hair tips ± uncinate).</span> <span class="statement" id="st-d0_s10" data-properties="receptacle shape;receptacle pubescence;receptacle pubescence;receptacle architecture"><b>Receptacles </b>flat to convex, glabrous or setulose, paleate (paleae falling, in 1 series between rays and discs, connate, herbaceous to ± scarious).</span> <span class="statement" id="st-d0_s11" data-properties="ray-floret quantity;ray-floret architecture;ray-floret reproduction"><b>Ray-</b>florets 2–12, pistillate, fertile;</span> <span class="statement" id="st-d0_s12" data-properties="corolla coloration;corolla architecture">corollas yellow, sometimes purple-veined abaxially.</span> <span class="statement" id="st-d0_s13" data-properties="disc-floret quantity;disc-floret architecture"><b>Disc-</b>florets 1–65, functionally staminate;</span> <span class="statement" id="st-d0_s14" data-properties="corolla coloration;tube height or length or size;lobe quantity;lobe shape">corollas yellow, tubes shorter than funnelform throats, lobes 5, deltate (anthers ± dark purple; styles glabrous proximal to branches).</span> <span class="statement" id="st-d0_s15" data-properties="ray cypsela shape;ray cypsela shape;ray cypsela course or shape;basal attachment orientation or shape;face pubescence;apex architecture or shape"><b>Ray </b>cypselae compressed, clavate, arcuate, basal attachments oblique, faces glabrous, apices beaked.</span> <span class="statement" id="st-d0_s16" data-properties=""><b>Ray </b>pappi crowns of scales (0.1–1 mm);</span> <span class="statement" id="st-d0_s17" data-properties="scale quantity;scale shape;scale shape;scale pubescence">disc pappi of 5–7 (white or purple-tipped) subulate, crisped, ciliolate scales (2.5–3 mm).</span> <span class="statement" id="st-d0_s18" data-properties="x chromosome quantity">x = 8.</span><!-- -->{{Treatment/Body |distribution=Calif. |discussion=<p>Species 2 (2 in the flora).</p><!-- --><p>Recognition of Jensia is based on evidence that Madia in the sense of D. D. Keck (1959) is not monophyletic; the epappose annuals constituting Madia in the restricted sense are more closely related to Carlquistia than to Jensia (B. G. Baldwin 1996).</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Plants 6–60 cm; involucres urceolate or globose; ray florets 5–12, laminae 4–10 mm; discflorets 16–65 |[[Jensia rammii|Jensia rammii]] |-id=key-0-1 |1 |Plants 5–25 cm; involucres broadly obconic; ray florets 2–8, laminae 0.5–3 mm; disc florets1–7 |[[Jensia yosemitana|Jensia yosemitana]] |} </div></div><!-- -->{{#Taxon: name=Jensia |author=Bruce G. Baldwin;John L. Strother |authority=B. G. Baldwin |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |illustrator=Barbara Alongi |illustration copyright=Flora of North America Association |distribution=Calif. |reference=None |publication title=Novon |publication year=1999 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_736.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Madiinae |genus=Jensia |apex architecture or shape=beaked |array architecture=umbelliform |basal attachment orientation or shape=oblique |blade shape=spatulate;linear |corolla architecture=purple-veined |corolla coloration=yellow;yellow |disc-floret architecture=staminate |disc-floret quantity=1;65 |distal leaf architecture=sessile |distal leaf arrangement=alternate |face pubescence=glabrous;hirsute;strigose |head architecture or arrangement=radiate |involucre diameter=3mm;5mm |involucre shape=less obconic or urceolate;globose |leaf position=cauline |lobe quantity=5 |lobe shape=deltate |margin shape=toothed;entire |phyllary quantity=2;12 |proximal leaf arrangement=opposite |ray cypsela course or shape=arcuate |ray cypsela shape=clavate;compressed |ray-floret architecture=pistillate |ray-floret quantity=2;12 |ray-floret reproduction=fertile |receptacle architecture=paleate |receptacle pubescence=setulose;glabrous |receptacle shape=flat;convex |scale pubescence=ciliolate |scale quantity=5;7 |scale shape=crisped;subulate |series quantity=1 |spine presence=absent |stem orientation=erect |tube height or length or size=shorter |whole-organism duration=annual |whole-organism some measurement=5cm;60cm |x chromosome quantity=8 }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Madiinae]] Templates used on this page: Template:Asteraceae (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 Jensia.