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Hieracium triste

{{Short description|Species of flowering plant}}

{{Speciesbox

| image = Pilosella tristis 5697.jpg

| image_caption = In Olympic National Park

| genus = Hieracium

| species = triste

| authority = Willd. ex Spreng.

| synonyms_ref =

| synonyms = {{hidden begin|title = List}}

{{Species list

|Chlorocrepis tristis|(Spreng.) Á.Löve & D.Löve

|Hieracium gracile|Hook.

|Hieracium hookeri|Steud.

|Hieracium vestitum|Fisch. ex Herder

|Pilosella tristis|(Willd. ex Spreng.) F.W.Schultz & Sch.Bip.

|Stenotheca tristis|(Willd. ex Spreng.) Schljakov

}}

{{hidden end}}

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Hieracium triste, commonly known as woolly hawkweed, is a species of flowering plant. It is native to North America where it is widespread across western Canada and the western United States from Alaska, Yukon, and the Northwest Territories south as far as California and New Mexico.[http://bonap.net/MapGallery/State/Hieracium%20triste.png Biota of North America Program 2014 state-level distribution map]

Description

Hieracium triste is a perennial herb. It produces a milky latex that often is described erroneously as sap. It is {{convert|3|-|35|cm|in|abbr=on}} tall and is unbranched. The stem has long hairs and some hairs that look like stars. The entire plant rarely grows more than {{convert|30|cm|in ft|0|abbr=on}} tall.[http://www.cals.uidaho.edu/hawkweed/pdf Rice, P., & Halpop, J. (2009). Hawkweed identification. Montana State University Extension]Kershaw, L., MacKinnon, A., & Pojar, J. (1998). Plants of the rocky mountains. Auburn, WA: Lone Pine.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066959 Flora of North America, Hieracium triste Willdenow ex Sprengel, 1826. ]

=Leaves=

Hieracium triste has basal leaves that are often in a rosette. The leaves look similar to a spoon and are {{convert|1|-|8|cm|in|abbr=on}} long and {{convert|0.3|-|1.2|cm|in|abbr=on}} wide. Most leaves are either hairless or have short hairs.

=Flowers=

Each plant usually only contains one to two flowers. They are yellow and often look like dandelions. They have bracts around each flower that have grey star shaped hairs and long black gland tipped hairs. These flowers bloom from June to August.

Habitat

Slender hawkweed grows in moist to wet open sites. It grows in mid-montane to alpine areas. It is most commonly seen below the timberline in areas with whitebark pine and alpine larch. It likes dry sites at lower elevations from Southern Colorado to Wyoming.

References

{{Reflist|refs=

{{cite web |title=Hieracium triste Willd. ex Spreng. |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew|url=http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:122486-1 |accessdate=2022-08-31 }}{{dead link|date=February 2023|bot=medic}}{{cbignore|bot=medic}}

}}

External links

{{Commons-inline}}

  • [http://plants.usda.gov/java/profile?symbol=HITR2 United States Department of Agriculture Plants Profile, Hieracium triste]

{{Taxonbar|from1=Q61121197|from2=Q15590020}}

Category:Flora of Northern America

Category:Plants described in 1826

tristis

{{Cichorieae-stub}}