Hieracium horridum
{{short description|Species of flowering plant in the family Asteraceae}}
{{Speciesbox
|image = Hieracium horridum.jpg
| genus = Hieracium
| species = horridum
| range_map = Range_of_Hieracium_horrid.svg
| synonyms =
{{Species list
|Hieracium breweri|A.Gray
|Pilosella horrida|(Fr.) F.W.Schultz & Sch.Bip.
}}
}}
Hieracium horridum, known as the prickly hawkweed or shaggy hawkweed, is a species of plant in the family Asteraceae. It gets its name from the long, dense, shaggy white to brown hairs (trichomes) which cover all of the plant parts{{cite book |title = Peterson Field Guide
|first = Theodore F.
|last = Niehaus
|title-link = Peterson Field Guide
|others = Illustrations by Charles L. Ripper
|chapter = Pacific States Wildflowers
|series = The Peterson Field Guide Series
|publisher = Houghton Mifflin Company
|location = New York
|isbn = 0-395-91095-1
|page = [https://archive.org/details/fieldguidetopaci00theo_0/page/220 220]
|year = 1976
}}
of this plant species.{{GRIN | 452952 |accessdate = 2007-12-26 }} The species is native to Oregon, California, and Nevada in the western United States.[http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=4190 Calflora taxon report, University of California, Hieracium horridum Fries Shaggy Hawkweed, prickly hawkweed ][http://bonap.net/MapGallery/County/Hieracium%20horridum.png Biota of North America Program 2014 county distribution map]
Name
The epithet horridum means 'bristly' in reference to its hairy leaves.{{Cite book|last=Blackwell|first=Laird R.|url=https://www.worldcat.org/oclc/61461560|title=Great Basin Wildflowers: A Guide to Common Wildflowers of the High Deserts of Nevada, Utah, and Oregon (A Falcon Guide)|publisher=Morris Book Publishing, LLC|year=2006|isbn=0-7627-3805-7|edition=1st|location=Guilford, Conn.|pages=124|oclc=61461560}}
Description
Hieracium horridum possesses oblong leaves along the stems of this {{convert|4|in|cm|0}} to {{convert|15|in|cm|0}} tall hairy plant with 11-12 bright yellow flower heads at the top of each flower head, which is {{convert|0.315|in|mm|0}} to {{convert|0.354|in|mm|0}} in diameter.{{cite journal
| last = Flora of North America
| authorlink =Flora of North America
| title = Hieracium horridum Fries, Uppsala Univ. Årsskr. 1862
| journal = Flora of North America North of Mexico
| volume = 19, 20 and 21
| pages = 278, 283, 292
| publisher =Flora of North America Association
| location = New York and Oxford
| url =http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066944
| accessdate = 2007-12-26 }} It flowers between late June and August.
Like all members of the family Asteraceae, the flowers are actually florets made up of many ray corolla, each ray its own stamen. As with other plants of the tribe Cichorieae, the stems and leaves produce a milky substance when broken.
{{cite web
| url = http://www.botanical.com/botanical/mgmh/h/hawwee07.html
| title = Hawkweed, Wood
| accessdate = 2007-12-16
| author = Mrs M. Grieve
| authorlink = Maud Grieve
| year = 1933
| work = A Modern Herbal
| publisher = botanical.com
}}
Distribution
The habitat of Hieracium horridum is in dry rocky places within mountainous coniferous forests in Oregon, California and Nevada at elevations between {{convert|5000|ft|m|0}} and {{convert|12000|ft|m|0}}.
References
{{Reflist|refs=
| url = http://www.calflora.net/bloomingplants/shaggyhawkweed.html
| title = Shaggy Hawkweed
| accessdate = 2007-12-26
| last = Charters
| first = Michael L.
| work = Wildflowers and Other Plants of Southern California
}}
| url = https://plants.usda.gov/java/profile?symbol=HIHO
| title = PLANTS Profile for Hieracium horridum Fr. prickly hawkweed
| access-date = 2007-12-26
| author = Natural Resources Conservation Service
| authorlink = Natural Resources Conservation Service
| year = 2007
| work = The PLANTS Database
| publisher = USDA, Baton Rouge, LA 70874-4490 USA.
}}
}}
External links
- {{cite web
| url = https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=37711
| title = Standard Report Hieracium horridum Fries
| accessdate = 2007-12-26
| author = Integrated Taxonomic Information System (ITIS)
| authorlink = Integrated Taxonomic Information System
}}
- {{cite book
| title = Flora oder Allgemeine botanische Zeitung
| url = http://www.botanicus.org/page/54664
| accessdate = 2007-12-26
| edition = 45
| year = 1862
| publisher = Missouri Botanical Garden
}}
- {{cite web
| url = http://www.geocities.com/royvandehoek/sangabrielflora1919ivan.htm
| title = The Flora of the Pine Belt of the San Antonio Mountains of Southern California
| accessdate = 2007-12-26
|author=Elna Sunquist Bakker |author2=Robert Jan 'Roy' van de Hoek
|orig-year=1919 |date=2003–2005
| work = Plant World
|archiveurl=https://web.archive.org/web/20071028115435/http://www.geocities.com/royvandehoek/sangabrielflora1919ivan.htm|archivedate=2007-10-28}}
- {{cite web
| url = http://tchester.org/sb/plants/guides/devils_slide.html
| title = Plant Guide to Devils Slide Trail, San Jacinto Mountains
| accessdate = 2007-12-26
|author=Tom Chester |author2=James Dillane |author3=Jane Strong
| year = 2002–2007
| work =tchester.org
| quote = This is a working list, about which we make no guarantees at all until we officially release it. Use at your own risk!
}}
- {{cite web
|url=http://www.sfsu.edu/~sierra/flora.htm
|title=FLORA
|accessdate=2007-12-26
|author=Sierra Nevada Field Campus, San Francisco State University
|authorlink=San Francisco State University
|work=Preliminary list of species within a 60 mile radius of Sierra Nevada Field Campus.
|archiveurl=https://web.archive.org/web/20070902103900/http://www.sfsu.edu/~sierra/flora.htm
|archivedate=2007-09-02
|url-status=dead
}}
- {{cite book
| last = Grossi
| first = Mark
| title = California Sierra Nevada Book:Devils Postpile National Monument
| url = https://archive.org/details/isbn_9781563525926
| accessdate = 2007-12-26
| date = September 2000
| chapter = Longstreet Highroad Guide to the California Sierra Nevada
| publisher = Lenz Design
| location = Decatur, GA
| isbn = 1-56352-592-5
| pages = Rainbow Falls
| url-access = registration
}}
{{Taxonbar|from1=Q61054518|from2=Q5753019}}