| Hieracium lachenalii | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Cichorioideae |
| Tribe: | Cichorieae |
| Genus: | Hieracium |
| Species: | H. lachenalii |
| Binomial name | |
| Hieracium lachenalii L. |
|
| Hieracium lachenalii distribution | |
| Synonyms | |
|
Hieracium argillaceum Jordan (1849)[1] |
|
'''Hieracium lachenalii''' also known as Common Hawkweed or Yellow Hawkweed is a woodland perennial which makes its home in fields and on roadsides.
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This common weed can grow and produce flowers on plants that range from 4 inches (10 centimeters) to 36 inches (1 meter) tall. The rhizome is short and stout. The broadly elliptic leaves can be up to 5 inches (12 centimeters) long and taper with teeth towards the base.[3] The flower heads have only petal-bearing ligulate (ray) florets and lack non-petal bearing tubular or disc florets (eg. as seen in the center of the sunflower head),[4] each petal is a complete flower in itself, not lacking stamens.[5] Bracts surround the flower head; the receptacle (basal part of the flower on which the florets are attached) is flat and naked; heads tend to start together then become somewhat solitary on long leafless stems.[4] The stalks below the heads are covered with scattered, simple and gland-tipped black hairs and contain a milky substance.[5]
The pale yellow flowers are produced during all of the summer months. The fruit are dark brown achenes.[3]
Native to most of Europe[2], Hieracium lachenalii was introduced to Newfoundland and Quebec, to New Jersey, Minnesota,[3] and to Australia.[4] It can sometimes be found in soils that have been disturbed.[6]
Republic of Adygea, Arkhangelsk Oblast, Astrakhan Oblast, Austria, Republic of Bashkortostan, Belarus, Belgium, Belgorod Oblast, Bosnia-Herzegovina, Bryansk Oblast, Channel Islands, Chechen Republic, Chuvashia, Republic of Croatia, Corsica, Czech Republic, Republic of Dagestan, Denmark, Estonia, France, Finland, Germany, Republic of Hungary, Republic of Ingushetia, Ireland, Italy, Ivanovo Oblast, Kabardino-Balkar Republic, Kaliningrad Oblast, Republic of Kalmykia, Kaluga Oblast, Karachay-Cherkess Republic, Republic of Karelia, Kirov Oblast, Komi Republic, Kostroma Oblast, Krasnodar Krai, Kursk Oblast, Latvia, Leningrad Oblast, Principality of Liechtenstein, Lipetsk Oblast, Lithuania, Grand Duchy of Luxemburg, Mari El Republic, Republic of Macedonia, Montenegro, Mordovia, Moscow Oblast, Moscow, Murmansk Oblast, Netherlands, Nizhny Novgorod Oblast, Republic of North Ossetia-Alania, Norway, Novgorod Oblast, Orenburg Oblast, Oryol Oblast, Penza Oblast, Perm Krai, Republic of Poland, Pskov Oblast, Romania, Rostov Oblast, Ryazan Oblast, Samara Oblast, San Marino, Saratov Oblast, Serbia, Slovenia, Slovakia, Smolensk Oblast, Stavropol Krai, Sweden, Switzerland, Tambov Oblast, Republic of Tatarstan, Tula Oblast, Tver Oblast, Udmurt Republic, Ukraine, Ulyanovsk Oblast, United Kingdom, Vatican City, Vladimir Oblast, Vologda Oblast, Volgograd Oblast, Voronezh Oblast, Yaroslavl Oblast,[2] and Portugal.[7]
Subarctic America: Greenland.[8]
Canada: British Columbia, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Quebec.[8]
United States: Connecticut, Delaware, Maine, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, Washington, Wisconsin.[8]
Media related to [//commons.wikimedia.org/wiki/Category:Hieracium_lachenalii Hieracium lachenalii] at Wikimedia Commons Data related to Hieracium lachenalii at Wikispecies