Biology:Leontodon
| Leontodon | |
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| File:Nordschitz-Leontodon hispidus.tif | |
| Leontodon hispidus L. | |
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| Seed-head of Leontodon hispidus | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Cichorioideae |
| Tribe: | Cichorieae |
| Subtribe: | Hypochaeridinae |
| Genus: | Leontodon L. |
| Synonyms[1] | |
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List
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Leontodon is a genus of plants in the tribe Cichorieae within the family Asteraceae, commonly known as hawkbits.
Their English name derives from the mediaeval belief that hawks ate the plant to improve their eyesight. Although originally only native to Eurasia and North Africa, some species have since become established in other countries, including the United States [2] and New Zealand.[3]
Recent research has shown that the genus Leontodon in the traditional delimitation is polyphyletic. Therefore, the former Leontodon subgenus Oporinia was raised to generic level.[4] According to the nomenclatural rules the name Scorzoneroides has priority at generic level and therefore, the members of Leontodon subgenus Oporinia were transferred to the re-erected genus Scorzoneroides.[5]
Ecology
Seeds of Leontodon species are an important food source for certain bird species.[6]
Uses
In Crete, the roots of the species Leontodon tuberosus are eaten raw and its leaves are eaten steamed.[7]
Secondary metabolites
The genus Leontodon s.str. (i.e. excluding the members of the resurrected genus Scorzoneroides) is a rich source of hypocretenolides, unique guaiane type sesquiterpene lactones with a 12,5-lactone ring instead of the usual 12,6 lactone ring.[8]
Phenolics found in Leontodon species include luteolin type flavonoids and caffeoyl quinic acid derivatives such as chlorogenic acid and 3,5-dicaffeoylquinic acid. Moreover, Leontodon species contain the caffeoyl tartaric acid derivatives caffeoyl tartaric acid and cichoric acid.[9][10]
Species
The following species are recognised in the genus Leontodon:[1]
- Leontodon albanicus (F.K.Mey.) F.Conti
- Leontodon anomalus Ball
- Leontodon apulus (Fiori) Brullo
- Leontodon asperrimus (Willd.) Endl.
- Leontodon balansae Boiss.
- Leontodon berinii (Bartl.) Roth
- Leontodon biscutellifolius DC.
- Leontodon boryi Boiss. ex DC.
- Leontodon bourgaeanus Willk.
- Leontodon caroliaedoi Talavera & M.Talavera
- Leontodon × carreiroi (Gand.) M.Moura & L.Silva
- Leontodon caucasicus (M.Bieb.) Fisch.
- Leontodon crispus Vill.
- Leontodon djurdjurae Coss. & Durieu ex Batt. & Trab.
- Leontodon dubius (Hoppe) Poir.
- Leontodon eriopodus Emb. & Maire
- Leontodon farinosus Merino & Pau
- Leontodon filii (Hochst. ex Seub.) Paiva & Ormonde
- Leontodon × friasi M.Moura & Silva
- Leontodon graecus Boiss. & Heldr.
- Leontodon × grassiorum Zidorn
- Leontodon hellenicus Phitos
- Leontodon hirtus L.
- Leontodon hispidus L.
- Leontodon hochstetteri M.Moura & Silva
- Leontodon hyoseroides Welw. ex Rchb.
- Leontodon incanus (L.) Schrank
- Leontodon intermedius Huter, Porta & Rigo
- Leontodon kotschyi Boiss.
- Leontodon kulczynskii Popov
- Leontodon libanoticus Boiss.
- Leontodon longirostris (Finch & P.D.Sell) Talavera
- Leontodon maroccanus (Pers.) Ball
- Leontodon oxylepis Boiss. & Heldr.
- Leontodon pinetorum Pau
- Leontodon pitardii Maire
- Leontodon rigens (Aiton) Paiva & Ormonde
- Leontodon rosanoi (Ten.) DC.
- Leontodon saxatilis Lam.
- Leontodon siculus (Guss.) Nyman
- Leontodon stenocalathius Rech.f.
- Leontodon tenuiflorus (Gaudin) Rchb.
- Leontodon tingitanus (Boiss. & Reut.) Ball
- Leontodon tuberosus L.
- Leontodon × vegetus Finch & P.D.Sell
Further reading
- Euro+Med Plantbase
- Battandier, J. A.; L. Trabut (1902). Flore de l'Algérie et de la Tunisie. Alger. https://archive.org/details/floreanalytiquee1902batt.
- Blatter, E. (1921). Flora Arabica II: Leguminosae-Compositae. Calcutta.
- Boulos, L. (2002). Flora of Egypt. Cairo.
- Danin, A. (2004). Distribution atlas of plants in the Flora Palaestina area. Jerusalem.
- Davis, P. (1975). Flora of Turkey Vol. 5. Edinburgh.
- Finch, R. A.; P. D. Sell (1976). "Leontodon L.". in Tutin, T. G.. Flora Europaea. 4. Cambridge.
- Jafri, S.M.H.; A. El-Gadi (1983). Flora of Libya. Tripoli.
- Jahandiez, E.; R. Maire (1934). Catalogue des plantes du Maroc.. 3. Alger.
- Moutérde, P. (1983). Nouvelle flore du Liban et de la Syrie. Beyrouth.
- Pittoni, H. (1977). "Leontodon". in K. H. Rechinger. Flora Iranica. 122. Graz.
- Quézel, P.; S. Santa (1963). Nouvelle flore de l'Algérie et des régions désertiques méridionales. Paris.
- Rechinger, K. H. (1964). Flora of lowland Iraq. Weinheim.
- Vassilev, V. N. (2000). Leontodon. In Bobrov, E. G. & Tzevelev, N. N. Flora of the USSR 29: Compositae, Cichorieae, pages 204-218. Enfield.
- Widder, F.J. (1975). "Die Gliederung der Gattung Leontodon". Phyton (Horn, Austria) 17: 23–29. ISSN 0079-2047.
- Zidorn, C. (2012). "Leontodon and Scorzoneroides (Asteraceae, Cichorieae) in Italy". Plant Biosystems (Taylor & Francis) 146 (Suppl. 1): 41–51. doi:10.1080/11263504.2012.710272. ISSN 1126-3504. https://figshare.com/articles/journal_contribution/825456.
- Zohary, M. (1978). Flora Palaestina Vol. 3. Jerusalem.
References
- ↑ 1.0 1.1 "Leontodon L. | Plants of the World Online | Kew Science" (in en). http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:331707-2.
- ↑ "52. Leontodon Linnaeus", Flora of North America, http://efloras.org/florataxon.aspx?flora_id=1&taxon_id=117988
- ↑ "LEONTODON L.", Flora of New Zealand, http://floraseries.landcareresearch.co.nz/pages/Taxon.aspx?id=_8d8e0edb-5cf9-4ca1-a419-23b41e8d5f9c&fileName=Flora%204.xml#_8d8e0edb-5cf9-4ca1-a419-23b41e8d5f9c
- ↑ Rosabelle Samuel; Walter Gutermann; Tod F. Stuessy; Claudete F. Ruas; Hans-Walter Lack; Karin Tremetsberger; Salvador Talavera; Barbara Hermanowski et al. (2006), "Molecular phylogenetics reveals Leontodon (Asteraceae, Lactuceae) to be diphyletic", American Journal of Botany 93 (8): 1193–1205, doi:10.3732/ajb.93.8.1193, PMID 21642184
- ↑ Greuter, W.; Gutermann, W.; Talavera, S. (2006), "A preliminary conspectus of Scorzoneroides (Compositae, Cichorieae) with validation of the required new names", Willdenowia 36 (2): 689–692, doi:10.3372/wi.36.36204, ISSN 0511-9618, archived from the original on 2012-03-06, https://web.archive.org/web/20120306005934/http://www.bgbm.org/willdenowia/w-pdf/wi36-2Greuter+al.pdf
- ↑ D. L. Buckingham; W. J. Peach (2005). "The influence of livestock management on habitat quality for farmland birds". Animal Science 81 (2): 199–203. doi:10.1079/asc50700199. http://www.bsas.org.uk/Publications/Animal_Science/text/Volume_81_Part_2/199/.
- ↑ Kleonikos G. Stavridakis; Κλεόνικος Γ. Σταυριδάκης (2006). Wild edible plants of Crete - Η Άγρια βρώσιμη χλωρίδα της Κρήτης. Rethymnon Crete. ISBN 960-631-179-1.
- ↑ Zidorn, C. (2008). "Sesquiterpene lactones and their precursors as chemosystematic markers in the tribe Cichorieae of the Asteraceae". Phytochemistry 69 (12): 2270–2296. doi:10.1016/j.phytochem.2008.06.013. ISSN 0031-9422. PMID 18715600. Bibcode: 2008PChem..69.2270Z.
- ↑ Zidorn, C.; Stuppner, H. (2001). "Evaluation of chemosystematic characters in the genus Leontodon". Taxon 50: 115–133. doi:10.2307/1224515. ISSN 0040-0262.
- ↑ Sareedenchai, V.; Zidorn, C. (2010). "Flavonoids as chemosystematic markers in the tribe Cichorieae of the Asteraceae". Biochemical Systematics and Ecology 38 (5): 935–957. doi:10.1016/j.bse.2009.09.006. ISSN 0305-1978.
Wikidata ☰ Q27909 entry
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