fool's watercress
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| Fool's-water-cress | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Apiales |
| Family: | Apiaceae |
| Genus: | Apium |
| Species: |
A. nodiflorum
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| Binomial name | |
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Apium nodiflorum | |
Helosciadium nodiflorum (formerly Apium nodiflorum), commonly called fool's watercress,[1] is a flowering plant found in ditches or streams and native to western Europe. It is a low-growing or prostrate perennial with pinnate leaves which have a vague resemblance to those of watercress. Helosciadium nodiflorum has short-stalked umbels of very small white 5-petalled flowers which are opposite the leaves and grow from the side of the stem at the leaf axils. It blooms in July and August.[2][3]
It is not a poisonous plant, but it could be easily confused with the allegedly poisonous lesser water parsnip – Berula erecta (Huds.) Coville. It is common throughout England, Wales and Ireland but is much less so in Scotland.[4]
Hybrids
There are a number of hybrids involving Helosciadium nodiflorum:
- × Beruladium procurrens A.C. Leslie (Berula erecta × H. nodiflorum)[5]
- Helosciadium × moorei (Syme) Warren (Helosciadium inundatum (L.) W.D.J. Koch × H. nodiflorum)[6]
- Helosciadium × longipedunculatum (F.W. Schultz) Desjardins (Helosciadium repens (Jacq.) W.D.J. Koch × H. nodiflorum)[7]
- Helosciadium × clandestinum Rita, Capó & Cursach (Helosciadium bermejoi (L. Llorens) Popper & M.F. Watson × H. nodiflorum)[8]
References
- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ Fool's-water-cress Wild flowers of Ireland. Accessed July 2011 Apium nodiflorum Fool's-water-cress]
- ^ Apium nodiflorum (Fool's-water-cress) Online Atlas of British and Irish Flora. Accessed July 2011
- ^ Apium nodiflorum Peter Llewellyn Wild Flowers of the British Isles, Accessed 2011
- ^ Desjardins, Stuart D.; Leslie, Alan C.; Stace, Clive A.; Schwarzacher, Trude; Bailey, John P. (2015). "Intergeneric hybridisation between Berula erecta and Helosciadium nodiflorum (Apiaceae)". Taxon. 64 (4): 784–794. doi:10.12705/644.9. ISSN 1996-8175.
- ^ Desjardins, Stuart D. (2016-09-01). "Molecular confirmation of Helosciadium × moorei ( H. inundatum × H. nodiflorum ; Apiaceae) from County Cork, Ireland". New Journal of Botany. 6 (2–3): 90–97. doi:10.1080/20423489.2016.1271294. ISSN 2042-3489. S2CID 90980061.
- ^ Desjardins, Stuart D.; Shaw, Andrew G.; Webb, Judith A. (2020-02-26). "Hybridisation and introgression in British Helosciadium (Apiaceae)". British & Irish Botany. 2 (1): 27–42. doi:10.33928/bib.2020.02.027. ISSN 2632-4970.
- ^ Rita, Juan; Capó, Miquel; Moragues, Eva; Bota, Josefina; Cursach, Joana (2018-02-01). "Hybridization processes in an introduced subpopulation of an endangered plant: Management strategies to guarantee the conservation of Helosciadium bermejoi (Apiaceae)". Journal for Nature Conservation. 41: 26–34. doi:10.1016/j.jnc.2017.10.006. ISSN 1617-1381.
External links
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