View source for Laburnum ← Laburnum 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=Laburnum |accepted_authority=Fabricius |publications={{Treatment/Publication |title=Enum., |place=228. 1759 |year=1759 }} |common_names=Golden-chain tree |special_status={{Treatment/ID/Special_status |code=I |label=Introduced }} |basionyms= |synonyms= |hierarchy=Fabaceae;Fabaceae subfam. Faboideae;Laburnum |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Fabaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Fabaceae subfam. Faboideae]]</div><div class="higher-taxon"><small>genus</small>[[Laburnum]]</div></div> |etymology=Ancient Latin name applied by Pliny to some species of Cytisus |volume=Volume 11 |mention_page= |treatment_page= }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>or shrubs, unarmed. <b>Stems</b> erect, young growth appressed-pubescent, glabrescent, or glabrous. <b>Leaves</b> alternate, palmate; stipules present, minute; petiolate; leaflets 3, subsessile, stipels absent, blade margins entire, surfaces glabrous or pubescent abaxially, glabrous adaxially. <b>Inflorescences</b> 20–50-flowered, axillary, racemes, pendulous [erect]; bracts present; bracteoles near midpoint of pedicel, subopposite. <b>Flowers</b> papilionaceous; calyx zygomorphic, campanulate, bilabiate, lobes 5; corolla yellow, glabrous, banner ovate or orbiculate, keel shorter than wings; stamens 10, monadelphous; anthers dimorphic, shorter ones versatile, alternate, longer ones basifixed, dehiscing apically; ovary stipitate; style glabrous; stigma terminal. <b>Fruits</b> legumes, stipitate, pendulous, subterete, weakly torulose, narrowly ellipsoid to oblong [oblong-linear], indehiscent, constricted between seeds, fleshy, pubescent. <b>Seeds</b> [1]2–4(–8), reniform-compressed; hilum lateral. <b>x</b> = 10.</span><!-- -->{{Treatment/Body |distribution=s Europe;w Asia;n Africa;introduced also nearly worldwide in temperate areas. |introduced=true |discussion=<p>Species ca. 3 (2, including 1 hybrid, in the flora).</p><!-- --><p>Laburnum includes three Old World species and one hybrid. Laburnum alpinum (Miller) Berchtold & J. Presl, a native of southern Europe (leaves and fruits glabrous), is cultivated in North America and is not reported to escape; it forms a hybrid with L. anagyroides called L. × watereri. The remaining species sometimes placed in Laburnum, L. caramanicum (Boissier & Heldrich) Bentham & Hooker f., is a shrub native to Greece and southwest Asia that has been infrequently cultivated in the southern United States. It is readily distinguished from other Laburnum by having upright versus pendulous racemes and usually is treated in a disti</p><!-- --><p>In Laburnum, all parts of the plants are toxic and can be lethal if consumed in excess (D. Frohne and H. J. Pfander 2004). The main toxins are a series of quinolizidine alkaloids of the cytisine type.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Leaflet blades appressed silky-pubescent abaxially; young growth appressed-pubescent; pedicels (4–)8–15 mm; legumes densely appressed-pubescent. |[[Laburnum anagyroides|Laburnum anagyroides]] |-id=key-0-1 |1 |Leaflet blades glabrous or glabrescent abaxially; young growth glabrescent or glabrous; pedicels 4–9 mm; legumes sparsely appressed-pubescent. |[[Laburnum × watereri|Laburnum × watereri]] |} </div></div><!-- -->{{#Taxon: name=Laburnum |author=Gordon C. Tucker;Zachary E. Guthrie |authority=Fabricius |rank=genus |parent rank=subfamily |synonyms= |basionyms= |family=Fabaceae |distribution=s Europe;w Asia;n Africa;introduced also nearly worldwide in temperate areas. |introduced=true |reference=None |publication title=Enum., |publication year=1759 |special status=Introduced |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/master/coarse_grained_fna_xml/V11/V11_526.xml |subfamily=Fabaceae subfam. Faboideae |genus=Laburnum }}<!-- -->[[Category:Treatment]][[Category:Fabaceae subfam. Faboideae]] Templates used on this page: Template:Fabaceae (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/Special status (view source) Template:Treatment/Publication (view source) Return to Laburnum.