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Hieracium laevigatum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Hieracium
Species:	H. laevigatum
Binomial name
Hieracium laevigatum Willd. 1803
Synonyms
Synonymy Hieracium achalzichiense Üksip Hieracium acrifolium (Dahlst.) Johanss. Hieracium analogum Boreau Hieracium auriglandulum Wiinst. Hieracium boreanum Boreau Hieracium calothyrsum Zahn ex Murr Hieracium chaubardianum Arv.-Touv. Hieracium dechyi (Koslovsky & Zahn) Üksip Hieracium deltophylloides (Zahn) Prain Hieracium deseglisei] Boreau Hieracium dryadeum Boreau Hieracium echinodermum (Zahn) Prain Hieracium fagineum Arv.-Touv. Hieracium ficifolium Arv.-Touv. Hieracium flocciparum (Schelk. & Zahn) Üksip Hieracium creperiforme Üksip Hieracium godbyense (Norrl.) Norrl. Hieracium hoglandicum Brenner Hieracium mixopolium Dahlst. Hieracium goriense (Koslovsky & Zahn) Üksip Hieracium gothiciforme (Dahlst.) Dahlst. Hieracium gothicum Fr. Hieracium lancidens Prain Hieracium hypopityforme Üksip Hieracium knafii (Čelak.) Zahn Hieracium laevigans (Zahn) Üksip Hieracium leucothyrsum (Litv. & Zahn) Üksip Hieracium lineatum Dahlst. Hieracium lissolepium (Zahn) Üksip Hieracium longissimum Peter Hieracium macrolygodes (Zahn) Üksip Hieracium magistri Godr. Hieracium nivale Froel. Hieracium perangustum (Dahlst.) Prain Hieracium pesianum Arv.-Touv. & Belli Hieracium pictaviense Sauzé & Maillard Hieracium pseudogothicum Arv.-Touv. Hieracium retardatum (Zahn) Prain Hieracium revolii Sudre Hieracium rigidum Hartm. Hieracium sagotii Boreau Hieracium semiglobosum Dahlst. Hieracium stricticaule Boreau Hieracium gracilipes (Sudre) A.W.Hill Hieracium subgracilipes (Zahn) P.D.Sell & C.West Hieracium tridentaticeps (Zahn) Üksip Hieracium conspicuum Boreau Hieracium tridentatum (Fr.) Fr. Hieracium vendeanum Boreau

Hieracium laevigatum, or smooth hawkweed, is a Eurasian plant species in the tribe Cichorieae within the family Asteraceae. It is widespread across much of Europe and western Asia. It is very similar to Hieracium sabaudum and can be found on dry, more or less nutrient rich soil in light woods, grassy embankments and fields, or on walls.

Hieracium laevigatum is an herb up to 60 cm (2 feet) tall, with leaves on the stem rather than in a rosette at the bottom. Leaves are lance-shaped, up to 10 cm (4 inches) long, with large teeth along the edge. One stalk branches toward the top, producing numerous flower heads. Each head has several ray flowers but no disc flowers.

Subspecies

• Hieracium laevigatum subsp. achalzichiense (Üksip) Greuter
• Hieracium laevigatum subsp. acrifolium (Dahlst.) Zahn
• Hieracium laevigatum subsp. analogum (Boreau) Zahn
• Hieracium laevigatum subsp. auriglandulum (Wiinst.) Zahn
• Hieracium laevigatum subsp. boreanum (Boreau) Zahn
• Hieracium laevigatum subsp. calothyrsum (Murr) Dalla Torre & Sarnth.
• Hieracium laevigatum subsp. chaubardianum (Arv.-Touv.) Zahn
• Hieracium laevigatum subsp. coronopifolioides Zahn
• Hieracium laevigatum subsp. dechyi Koslovsky & Zahn
• Hieracium laevigatum subsp. deltophylloides Zahn
• Hieracium laevigatum subsp. deseglisei (Boreau) Zahn
• Hieracium laevigatum subsp. dryadeum (Boreau) Zahn
• Hieracium laevigatum subsp. echinodermum Zahn
• Hieracium laevigatum subsp. fagineum (Arv.-Touv.) Zahn
• Hieracium laevigatum subsp. ficifolium (Arv.-Touv.) Zahn
• Hieracium laevigatum subsp. flocciparum Schelk. & Zahn
• Hieracium laevigatum subsp. glareosum (Lönnr.) Greuter
• Hieracium laevigatum subsp. goriense Koslovsky & Zahn
• Hieracium laevigatum subsp. gothiciforme (Dahlst.) Zahn
• Hieracium laevigatum subsp. gothicum (Fr.) Čelak.
• Hieracium laevigatum subsp. grandidens Zahn
• Hieracium laevigatum subsp. hypopityforme (Üksip) Greuter
• Hieracium laevigatum subsp. knafii (Čelak.) Zahn
• Hieracium laevigatum subsp. laevigans Zahn
• Hieracium laevigatum subsp. leucothyrsum (Litv. & Zahn) Greuter
• Hieracium laevigatum subsp. lineatum (Dahlst.) Zahn
• Hieracium laevigatum subsp. macrolygodes Zahn
• Hieracium laevigatum subsp. magistri (Godr.) Zahn
• Hieracium laevigatum subsp. nivale (Froel.) Zahn
• Hieracium laevigatum subsp. perangustum (Dahlst.) Zahn
• Hieracium laevigatum subsp. pesianum (Arv.-Touv. & Belli) Zahn
• Hieracium laevigatum subsp. pictaviense (Sauzé & Maillard) Zahn
• Hieracium laevigatum subsp. pseudogothicum (Arv.-Touv.) Zahn
• Hieracium laevigatum subsp. retardatum Zahn
• Hieracium laevigatum subsp. revolii (Sudre) Zahn
• Hieracium laevigatum subsp. rigidum (Hartm.) Čelak.
• Hieracium laevigatum subsp. sagotii (Boreau) Zahn
• Hieracium laevigatum subsp. semiglobosum (Dahlst.) Zahn
• Hieracium laevigatum subsp. stricticaule (Boreau) Zahn
• Hieracium laevigatum subsp. subgracilipes Zahn
• Hieracium laevigatum subsp. tridentaticeps (Zahn) Zahn
• Hieracium laevigatum subsp. tridentatum (Fr.) Čelak.
• Hieracium laevigatum subsp. vendeanum (Boreau) Zahn
• Hieracium laevigatum subsp. vogesicola Zahn

References

1. ^ The Plant List, Hieracium laevigatum Willd.
2. Altervista Flora Italiana, Sparviere levigato Hieracium laevigatum Willd.
3. "Stijf havikskruid (Hieracium laevigatum)". Planten en bomen. SoortenBank.nl. Retrieved 2007-12-24.
4. Wilson, Linda M. 2007. Key to Identification of Invasive and Native Hawkweeds (Hieracium spp.) in the Pacific Northwest. British Columbia Ministry of Forests and Range, Forest Practices Branch, Invasive Alien Plant Program - includes line drawings and color photos of numerous species

External links

• "Hieracium laevigatum Willd". Integrated Taxonomic Information System.
• In Flora Danica as: H. rigidum
• Czech Botany, Hieracium laevigatum Willd. – jestřábník hladký / jastrabník hladký in Czech with photos

• Hieracium
• Flora of Asia
• Flora of Europe
• Plants described in 1803
• Taxa named by Carl Ludwig Willdenow