View source for Causonis

{{Treatment/ID
|accepted_name=Causonis
|accepted_authority=Rafinesque
|publications={{Treatment/Publication
|title=Med. Fl.
|place=2: 122. 1830
|year=1830
}}
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Vitaceae;Causonis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Vitaceae]]</div><div class="higher-taxon"><small>genus</small>[[Causonis]]</div></div>
|etymology=Derivation unknown; perhaps Latin causa, reason, and onus, necessity, alluding to segregation from Cissus
|volume=Volume 12
|mention_page=page 4
|treatment_page=page 22
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Vines </b>[lianas], sprawling to moderately high climbing, synoecious or polygamomonoecious. <b>Branches</b>: bark adherent; pith white, continuous through nodes; tendrils usually 2–3[–5]-branched, without [with] adhesive discs. <b>Leaves</b> palmately (pedately) compound. <b>Inflorescences</b> usually bisexual, axillary, corymblike cymes, compound. <b>Flowers</b> bisexual or unisexual; calyx cup-shaped, indistinctly 4-lobed; petals 4, distinct; nectary adnate to base of ovary, cup-shaped, 4-lobed; stamens 4; style conic, short. <b>Berries</b> dark blue to black. <b>Seeds</b> 2–4 per fruit. <b>x</b> = 10.</span><!--

-->{{Treatment/Body
|distribution=e;se Asia;Australia.
|discussion=<p>Species ca. 25 (1 in the flora).</p><!--
--><p><i>Causonis</i> is separated from Cayratia (Wen J. et al. 2013) based on phylogenetic evidence (Wen et al. 2007; Lu L. M. et al. 2013). It corresponds to the Asian and Australian Cayratia sect. Discypharia Suessenguth (K. Suessenguth 1953; A. Latiff 1981). <i>Causonis</i> trifolia (Linnaeus) Rafinesque, native to southeast Asia and Australia, is an aggressive weed at Fairchild Tropical Garden in Miami, Florida. No other locations are known for this species in the flora area, but it may become naturalized in southern Florida. It can be distinguished from <i>C. japonica</i> by having 3-foliolate leaves and tendrils that are 3–5-branched and usually have adhesive discs at their tips.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Causonis
|author=
|authority=Rafinesque
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Vitaceae
|distribution=e;se Asia;Australia.
|introduced=true
|reference=None
|publication title=Med. Fl.
|publication year=1830
|special status=Introduced
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V12/V12_123.xml
|genus=Causonis
}}<!--

-->[[Category:Treatment]][[Category:Vitaceae]]