Editing Dipsacus (section)

===Carnivory===
[[Carnivorous plant|Carnivory]] in teasels was discussed by [[Francis Darwin]] (son of [[Charles Darwin]]) in a paper held by the [[Royal Society]].<ref>{{Cite web |date=2020-11-27 |title=Dipsacus and Drosera: Frank's favourite carnivores |url=https://www.darwinproject.ac.uk/commentary/life-sciences/dipsacus-and-drosera-frank-s-favourite-carnivores |access-date=2023-09-28 |website=Darwin Correspondence Project |language=en}}</ref><ref>Mentioned in episode of {{Citation|last=Objectivity|title=White Gloves of Destiny (Random Researcher) - Objectivity #72|date=2016-05-31|url=https://www.youtube.com/watch?v=wms6s2AWcbk |archive-url=https://ghostarchive.org/varchive/youtube/20211212/wms6s2AWcbk| archive-date=2021-12-12 |url-status=live|access-date=2016-05-31}}{{cbignore}}</ref>

Rain water can collect in the cup-like receptacles that form where sessile leaves join the stem; this structure may perform the function of preventing sap-sucking [[insect]]s such as [[aphid]]s from climbing the stem. These in turn may also be used to collect the [[nutrients]] from any animal matter that accumulates within them, making them a form of [[protocarnivorous plant]].

Contemporary attempts to replicate Darwin's experiments on the common teasel continue to fuel debate over whether or not ''Dipsacus'' is truly carnivorous. A 2011 study revealed increased seed production (but not height) dependent on both amount and nature of introduced animal supplementation, while 2019 experiments suggested that the increased seed set was a response to poor soil conditions rather than proof of proto-carnivory.<ref>{{cite journal|last1=Shaw|first1=P. J. A.|last2=Shackleton|first2=K.|editor1-last=Joly|editor1-first=Simon|doi=10.1371/journal.pone.0017935|title=Carnivory in the teasel ''Dipsacus fullonum'' — the effect of experimental feeding on growth and seed set|journal=PLOS ONE|volume=6|issue=3|pages=e17935|year=2011|pmid=21445274|pmc=3060873|bibcode=2011PLoSO...617935S|doi-access=free}}</ref><ref>Krupa, James J., and J. Matthew Thomas. "Is the Common Teasel (''Dipsacus Fullonum'') Carnivorous or Was Francis Darwin Wrong?" ''Botany'' 97, no. 6 (March 22, 2019): 321–28. {{Doi|10.1139/cjb-2019-0008}}.
</ref> The [[leaf shape]] is lanceolate, {{convert|20|-|40|cm|in}} long and {{convert|3|–|6|cm|in}} broad, with a row of small spines on the underside of the midrib.