Common Names in English:
Canada Hawkweed, Canadian Hawkweed, Yellow Hawkweed
The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.
The Lactuceae are a tribe of closely related genera of the sunflower family that are easily recognized because the flowering heads are composed of wholly of ligulate florets that are usually 5-lobed. Another very distinguishing feature is the milky sap . Although not apparent without magnification, the pollen is distinctive in that the spines are more or less restricted to discrete ridges or flanges on the surface of the grain. In other members of the family the spines are distributed more or less evenly over the surface of the pollen grain . The pappus usually consists of scales or stiff hairs . -- Gerald D. Carr.
, (5 ) 20 150+ cm; taprooted (rootstocks
sometimes woody, branched; stolons produced
in some taxa) . Stems usually 1, usually erect
, usually branched distally, sometimes throughout, sometimes scapiform
, see discussion) . Leaves basal, basal and cauline, or cauline; petiolate
or sessile; blades
, lanceolate, oblanceolate
, or spatulate
, or dentate
glabrous or hairy, induments often complex, see discussion) . Heads borne singly or in corymbiform
, thyrsiform, umbelliform, or nearly racemiform
arrays. Peduncles (terminal
) not inflated
, often bracteate
. Calyculi 0 or of 3 13( 16+), deltate to lanceolate or linear
(in 1 2+ series; sometimes intergrading with phyllaries) . Involucres hemispheric
, 3 9[ 12+] mm diam. Phyllaries 5 21( 40+) in 2+ series, lanceolate to linear, subequal
to unequal (reflexed
in fruit), margins usually little, if at all, scarious
, apices obtuse
to acute or acuminate. Receptacles flat, pitted
, glabrous, epaleate. Florets 6 150+; corollas usually yellow, sometimes white or ochroleucous
, sometimes tinged with cyan
or red, rarely orange (then often drying scarlet or purplish) . Cypselae usually red-brown or black (tan in H. horridum), usually ± columnar
, sometimes ± urceolate
(slightly bulbous proximally and narrower distally) or nearly fusiform
, not distinctly beaked
) usually 10, faces glabrous; pappi persistent
(fragile), of 20 80+, distinct
, white, sordid
, or rufous
, ± equal or unequal, barbellulate
in 1 2+ series. x = 9.
Species 250 1000+: North America, Mexico, Central America, South America, Europe, Asia, Africa.
Most plants referable to Hieracium are apomictic (reproducing from asexually produced seeds) . Apomictic reproduction often results in perpetuation of morphologic variants at populational and regional levels. Temptation to name such variants as species has proven irresistible to some botanists; upward of 9,000 species names have been published in Hieracium. Circumscriptions of "species" in Hieracium seem to be more artificial than in most genera of composites . Under these circumstances, I feel it would be irresponsible to recognize any infraspecific taxa here. For the most part, the "species" recognized here are those that have been recognized in local and regional floras of the past 50 or so years. Accepted names and/or changes in synomymies for some species reflect changes suggested by J. H. Beaman (1990), A. Cronquist (1980), and E. G. Voss (1972 1996, vol. 3) . I have maintained a traditional generic circumscription of Hieracium. Some other botanists exclude some species (including numbers 1 6 here) from Hieracium and treat them in Pilosella Hill , which differs from Hieracium in having stolons often produced, ribs of cypselae slightly projecting distally, and bristles of the pappi in one series. For Greenland, T. W. Böcher et al. (1968) reported 18 species of Hieracium: 16 said to be endemic to Greenland plus H. alpinum Linnaeus (known from Greenland and Eurasia ) and H. groenlandicum Arvet-Touvet (= H. vulgatum Fries; known from Greenland and continental North America) . Following H. J. Scoggan (1978 1979, part 4), I have placed 15 names of Greenland "endemics" as synonyms of other names. The type of the 16th "endemic," H. trigonophorum Oskarsson, is probably conspecific with that of H. alpinum. In my key and descriptions , "piloso-hirsute" refers to surfaces with scattered to crowded, tapered, whiplike, straight or curly, smooth to ± barbellate hairs mostly (0.5 ) 2 8( 15+) mm (sometimes called "setae") ; "stellate-pubescent" refers to surfaces with scattered to crowded, ± dendritically branched (often called, but seldom truly, "stellate") hairs mostly 0.05 0.2+ mm (such surfaces are sometimes described as "floccose") ; and "stipitate-glandular" refers to surfaces with scattered to crowded gland-tipped hairs mostly 0.2 0.8( 1.2+) mm. Surfaces of stems, leaves, peduncles, and phyllaries may be glabrous or may bear one, two, or all three of the types of hairs mentioned here; other induments are seldom encountered in hieraciums of the flora area. Given the complexity of the reproductive modes among the plants and the likelihood of misidentifications of vouchers , I have not included chromosome numbers for species. Sexual hieraciums are usually diploids (2n = 18) and the apomictic hieraciums are usually triploids (2n = 27) .
Typically found at an altitude of 0 to 951 meters (0 to 3,120 feet).
- Whittaker & Margulis,1978
- Haeckel, 1866
- Cavalier-Smith, 1981
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Brongniart, 1843
- Takhtajan, 1967
- Takhtajan Ex Reveal, 1992
- Lindley, 1833
- Family: Compositae () - Giseke, 1792, nom. cons., nom. alt.
- Order: Asterales () - Lindley, 1833
- Superorder: Campanulanae () - Takhtajan Ex Reveal, 1992
- Subclass: Asteridae () - Takhtajan, 1967
- Class: Spermatopsida () - Brongniart, 1843
- Subphylum: Euphyllophytina ()
- Phylum: Tracheophyta () - Sinnott, 1935 ex Cavalier-Smith, 1998 - Vascular Plants
- Subkingdom: Viridaeplantae () - Cavalier-Smith, 1981
- Kingdom: Plantae () - Haeckel, 1866 - Plants
Hieracium kalmii L. var. canadense (Michx.) Reveal
Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000
Members of the genus Hieracium
ZipcodeZoo has pages for 163 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:
H. acranthophorum (Tunugdliarfik Hawkweed) · H. acranthophorum var. acranthophorum (Tunugdliarfik Hawkweed) · H. acranthophorum var. isortoquense (Tunugdliarfik Hawkweed) · H. albiflorum (White Hawkweed) · H. alleghaniense (Alleghany Hawkweed) · H. alpinum (Alpine Hawkweed) · H. amitsokense (Royal Hawkweed) · H. angmagssalikense (Blackstyle Hawkweed) · H. argutum (Southern Hawkweed) · H. argutum var. argutum (Southern Hawkweed) · H. arvense (Perennial Sowthistle) · H. atramentarium (Hawkweed) · H. atratum (Polar Hawkweed) · H. aurantiacum (Orange Hawkweed) · H. bolanderi (Bolander Hawkweed) · H. caespitosum (Field Hawkweed) · H. canadense (Canada Hawkweed) · H. canadense var. canadense (Canadian Hawkweed) · H. canadense var. canadense Michx. (Canadian Hawkweed) · H. canadense var. divaricatum (Canadian Hawkweed) · H. canadense var. divaricatum Lepage (Canadian Hawkweed) · H. canadense var. fasciculatum (Canadian Hawkweed) · H. canadense var. subintegrum (Canadian Hawkweed) · H. canadense var. subintegrum Lepage (Canadian Hawkweed) · H. carneum (Huachuca Hawkweed) · H. cernuiforme (Hawkweed) · H. cynoglossoides (Hounds-Tongue Hawkweed) · H. devoldii (Devold's Hawkweed) · H. dutillyanum (Hawkweed) · H. eugenii (Neria Hawkweed) · H. fassettii (Fassett's Hawkweed) · H. fassettii Lepage var. wisconsinense Lepage (pro nm.) (Wisconsin Hawkweed) · H. fassettii var. fassettii (Fassett's Hawkweed) · H. fassettii var. mendicum (Fassett's Hawkweed) · H. fassettii var. wisconsinense (Wisconsin Hawkweed) · H. fendleri (Yellow Hawksbeard) · H. fendleri var. discolor (Yellow Hawkweed) · H. fendleri var. discolor Gray (Yellow Hawkweed) · H. fendleri var. fendleri (Fendler's Hawkweed) · H. fendleri var. fendleri Sch.Bip. (Fendler Hawkweed) · H. fendleri var. mogollense (Mogollon Hawkweed) · H. fendleri var. mogollense Gray (Mogollon Hawkweed) · H. fernaldii (Fernald's Hawkweed) · H. flagellare (Hawkweed) · H. flagellare var. amauracron (Hawkweed) · H. flagellare var. cernuiforme (Hawkweed) · H. flagellare var. flagellare (Hawkweed) · H. flagellare var. glatzense (Hawkweed) · H. flagellare var. pilosius (Hawkweed) · H. flagellare Willd. (pro sp.) var. flagellare Willd. (pro sp.) (Hawkweed) · H. floribundum (Hawkweed) · H. lactucella (Lindenleaf Rosemallow) · H. fuscatrum (Hawkweed) · H. gracile (Alpine Hawkweed) · H. gracile var. alaskanum (Alaska Hawkweed) · H. gracile var. alaskanum Zahn (Alaska Hawkweed) · H. gracile var. detonsum (Low Alpine Hawkweed) · H. gracile var. gracile (Slender Hawkweed) · H. gracile var. yukonense (Yukon Hawkweed) · H. gracile var. yukonense Porsild (Yukon Hawkweed) · H. greenei (Greene's Hawkweed) · H. greenii (Maryland Hawkweed) · H. groenlandicum (Greenland Hawkweed) · H. grohii (Groh's Hawkweed) · H. gronovii (Gronovis Hawkweed) · H. horridum (Prickly Hawkweed) · H. hyparcticum (Arctic Hawkweed) · H. inuloides (Butterfly Hawkweed) · H. ivigtutense (Holsteinsborg Hawkweed) · H. kalmii (Kalm's Hawkweed) · H. kalmii var. kalmii (Kalm's Hawkweed) · H. lachenalii (Common Hawkweed) · H. lactucella (Hawkweed) · H. laevigatum (Smooth Hawkweed) · H. lanatum (Hairy Hawkweed) · H. lemmonii (Lemmon's Hawkweed) · H. lividorubens (Cow Hawkweed) · H. lividorubens var. lividorubens (Cow Hawkweed) · H. lividorubens var. pseudostylum (Cow Hawkweed) · H. lividorubens var. subnudulum (Cow Hawkweed) · H. longiberbe (Long-Bearded Hawkweed) · H. longipilum (Hairy Hawkweed) · H. maculatum (Spotted Hawkweed) · H. marianum (Hawkweed) · H. megacephalon (Coastal Plain Hawkweed) · H. lactucella (Crevice Alumroot) · H. lactucella (Showy Goldeneye) · H. murorum (Wall Hawkweed) · H. musartutense (Musartut Hawkweed) · H. nepiocratum (Lindenows Fjord Hawkweed) · H. paniculatum (Allegheny Hawkweed) · H. lactucella (Littleflower Alumroot) · H. lactucella (Littleleaf Alumroot) · H. perpropinquum (Hawkweed) · H. pilosella (Mouse-Ear Hawkweed) · H. pilosella pseudosedunense (Mouse-Ear Hawkweed) · H. pilosella var. niveum (Mouseear Hawkweed) · H. pilosella var. pilosella (Mouseear Hawkweed) · H. piloselloides (King-Devil Hawkweed) · H. pilosius (Hawkweed)
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- A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan. Prepared under the direction of Alexander G. Ruthven. Lansing, Mich.: Wynkoop, Hallenbeck, Crawford co., state printers, 1911. url p. 120, p. 209, p. 211, p. 330.
- A botanical exploration of the north shore of the gulf of St. Lawrence including an annotated list of the species of vascular plants, Ottawa, F. A. Acland, printer, 1922. url p. 112, p. 126.
- A contribution to the knowledge of the flora of southeastern Minnesota. [Boston, Heliotype Print. Co.]1900. url p. 409.
- A dictionary of English names of plants applied in England and among English-speaking people to cultivated and wild plants, trees, and shrubs, by William Miller; in two parts, English-Latin and Latin-English. London, J. Murray, 1884. url p. 205, p. 61.
- A provisional list of the parasitic fungi of Wisconsin. Madison, 1914 url p. 944.
- Ames forester. .. Ames, Ia., The Forestry club of the Iowa state college, 1913- url p. 285.
- An illustrated flora of the northern United States, Canada and the British possessions: from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian / by Nathaniel Lord Britton and Hon. Addison Brown. New York: Scribner, 1913. url p. 328, p. 329.
- An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language, by George T. Stevens. .. with more than 1800 illustrations from drawings by the author. New York, Dodd, Mead and company, 1910. url p. 622, p. 623.
- Annals of the Carnegie Museum. [Pittsburgh]: Published by authority of the Board of Trustees of the Carnegie Institute, 1901- url p. 398, p. 420, p. 525.
- Annotated list of the ferns and flowering plants of New York state, by Homer D. House. Albany, The University of the state of New York, 1924. url p. 670.
- Annual report / Albany: University of the State of New York, 1902-1918. url p. 12, p. 16, p. 19.
- Annual report / New York State Museum. Albany, N.Y.: University of the State of New York, c1904-1920. url p. 150.
- Annual report of the Maine Agricultural Experiment Station. [Orono, Me.: Maine State College, 1885-1953. url p. 209, p. 44.
- Annual report of the regents of the university on the condition of the State Cabinet of Natural History, with catalogues of the same. Albany, Regents of the University. url p. 51.
- Autumn notes in Iowa, Cedar Rapids, Iowa, The Torch press, 1914. url p. 164.
- Britton, N. L. (ed.). North American flora. 7 1920 [New York]New York Botanical Garden. url p. 367, p. 514, p. 846, p. 904.
- Budd's flora of the Canadian Prairie Provinces / [Ottawa]: Research Branch, Agriculture Canada, 1987. url p. 695.
- Bulletin - New York State Museum. Albany: New York State Education Dept. url p. 150.
- Bulletin / Ohio Biological Survey. Columbus, Ohio: Ohio State University, 1913- url p. 236.
- Bulletin of the Illinois State Laboratory of Natural History. Bloomington, Ill.: The Laboratory, 1876-1918. url p. 170, p. 318, p. 368, p. 368.
- Bulletin of the Torrey Botanical Club. 38 1911 New York: Torrey Botanical Club, 1870-1996 url p. 14, p. 666, p. 709.
- Catalog of Ohio vascular plants, arranged according to the phyletic classification; with notes on the geographical distribution in the state, based mainly on specimens in the State Herbarium, Botanical Laboratory, the Ohio State Univ Columbus, The Ohio State University, 1914. url .
- Catalog of Ohio vascular plants: arranged according to the phyletic classification: with notes on the geographical distribution in the state, based mainly on specimens in the State Herbarium, Botanical Laboratory, the Ohio State Uni by John H. Schaffner. Columbus: Ohio State University, 1914. url p. 236.
- Catalogue of the flowering plants and ferns of Connecticut growing without cultivation / by Charles Burr Graves. .. [et al.]; Committee of the Connecticut Botanical Society. Hartford: Printed for the State Geological and Natural History Survey, 1910. url p. 415.
- Checklist of plants of the Ottawa District. Ottawa, 1958. url p. 89.
- Contributions from the Botanical Laboratory. Philadelphia: University of Pennsylvania Press, 1892- url .
- Contributions from the New York Botanical Garden. New York: The Garden, 1899- url p. 14.
- Contributions from the United States National Herbarium 3 1892-1896 Washington, D.C.: Smithsonian Institution Press, 1890- url p. 237, p. 510, p. 546, p. 547.
- Erigenia: journal of the Illinois Native Plant Society. Carbondale, Ill.: The Society, 1982- url p. 10.
- Field book of American wild flowers; being a short description of their character and habits, a concise definition of their colors, and incidental references to the insects which assist in their fertilization, by F. Schuyler Mathews. 1912 New York, Putnam,  url p. 578.
- Fieldbook of Illinois wild flowers; six hundred fifty of the more common flowering plants in the state. Urbana, 1936. url p. 392, p. 392, p. 398, p. 398.
- Flora of Illinois, containing keys for the identification of the flowering plants and ferns, by George Neville Jones. .. Notre Dame, Ind., The University Press, 1945. url p. 272.
- Flora of Indiana, by Charles C. Deam. Indianapolis, Wm. B. Burford printing co., contractor for state printing and binding, 1940. url p. 1016, p. 1017, p. 1018.
- Flora of New Bedford and the shores of Buzzards Bay, with a procession of the flowers. New Bedford [Mass.]E. Anthony, 1911. url p. 84.
- Flora of West Virginia, by Charles Frederick Millspaugh and Lawrence William Nuttall. 1 1896 Chicago, 1896. url p. 233.
- Flora of Winneshiek County. Des Moines: 1906. url , .
- Flora of southeastern Washington and adjacent Idaho / by Charles V. Piper and R. Kent Beattie. Lancaster, Pa.: New Era, 1914. url p. 251.
- Flora of southern British Columbia and Vancouver Island: with many references to Alaska and northern species / by Joseph Kaye Henry. Toronto: W.J. Gage, c1915. url p. 330.
- Flora of the Indiana dunes, a handbook of the flowering plants and ferns of the lake Michigan Coast of Indiana and of the Calumet District, by Donald Culross Peattie. Chicago, Field Museum of Natural History, 1930. url p. 403.
- Flora of the northwest coast, including the area west of the summit of the Cascade Mountains, from the forty-ninth parallel south to the Calapooia Mountains on the south border of Lane County, Oregon. Lancaster, Pa., Press of the New Era Printing Company, 1915. url .
- Flora of the northwest coast: including the area west of the summit of the Cascade Mountains, from the forty-ninth parallel south to the Calapooia Mountains on the south border of Lane County, Oregon / by Charles V. Piper and R. Kent Beattie. Lancaster, Pa.: Press of the New era printing company, 1915. url p. 357.
- Flora of the southeastern Washington and adjacent Idaho, Lancaster, Pa., Press of the New Era Printing Company, 1914. url .
- Flora of the state of Washington / by Charles V. Piper. Washington: G.P.O., 1906 url p. 546, p. 547.
- Flora of the state of Washington. By Charles V. Piper. Washington, Govt. Print. Off., 1906. url p. 547.
- Flora of the vicinity of New York; a contribution to plant geography. [New York]1915 url p. 20, p. 646.
- Hortus suburbanus Calcuttensis; A catalogue of the plants which have been cultivated in the Hon. East India Company's botanical garden, Calcutta, and in the Serampore botanical garden. By the late J. O. Voigt, printed under the superintendence of W. Griffith. Calcutta, Bishop's College Press, 1845. url p. 432.
- Lake Maxinkuckee. A physical and biological survey by Barton Warren Evermann and Howard Walton Clark. [Indianapolis]Dept. of Conservation, State of Indiana [Wm. B. Burford, printer]1920. url p. 425, p. 480.
- Lake Maxinkuckee. a physical and biological survey by Barton Warren Evermann and Howard Walton Clark. [Indianapolis, Wm. B. Burford, printer]1920. url p. 425.
- Lake Maxinkuckee: a physical and biological survey / by Barton Warren Evermann and Howard Walton Clark. Indianapolis: Dept. of Conservation, 1920. url p. 480.
- Lake Superior. [With a narrative of the tour by J. Elliot Cabot. Huntington, N.Y.]R. E. Krieger Pub. Co., 1974 [c1850] url p. 160.
- Lake Superior: its physical character, vegetation, and animals, compared with those of other and similar regions. By Louis Agassiz. With a narrative of the tour, by J. Elliot Cabot. And contributions by other scientific gentlemen. .. Boston, Gould, Kendall and Lincoln, 1850. url p. 160.
- Minnesota botanical studies. Minneapolis, Geological and Natural History Survey of Minnesota. url p. 1016, p. 409, p. 409, p. 548, p. 548, p. 556, p. 556, p. 574, p. 594, p. 594, p. 760, p. 965.
- Miscellaneous papers on the botany of Michigan, by C. K. Dodge. Prepared under the direction of Alexander G. Ruthven. Published as a part of the Annual report of the Board of Geological Survey for 1920. Lansing, Mich., Wynkoop Hallenbeck Crawford, State Printers, 1921. url p. 123, p. 164, p. 222, p. 74.
- Miscellaneous publications / University of Michigan, Museum of Zoology. Ann Arbor, Mich.: The University, 1916- url p. 44.
- Museum bulletin / Albany, N.Y.: University of the State of New York, 1908-1916. url p. 12, p. 16.
- Nantucket wild flowers / by Alice O. Albertson; illustrated by Anne Hinchman. New York and London: G. P. Putnam's sons, 1921. url , , p. 423, p. 423, p. 433, p. 433.
- New York State Museum bulletin. Albany, N.Y.: University of the State of New York, 1916-1944. url p. 108, p. 113, p. 19.
- New manual of botany of the central Rocky mountains (vascular plants) by John M. Coulter, rev. by Aven Nelson. Cincinnati [etc.]American book company[c1909] url p. 595.
- Novon a journal of botanical nomenclature from the Missouri Botanical Garden. 3 1993 St. Louis, MO: Missouri Botanical Garden, url p. 73, p. 74.
- Observations on the flowering plants, ferns and fern allies growing wild in Marquette County, Michigan, in 1916 and 1917, especially in the vicinity of the Huron Mountain Club. Ann Arbor, Michigan, Published by the University, 1918. url .
- Plant species of special concern and plant associations of Sheridan County, Montana / Helena, Mont.: Montana Natural Heritage Program, 2000. url .
- Plants of Iowa; a preliminary list of the native and introduced plants of the state, not under cultivation; comp. by Wesley Greene, secretary. Des Moines, Bishard brothers, printers, 1907. url p. 222, p. 222.
- Proceedings of the Davenport Academy of Natural Sciences. Davenport, Ia., Academy of Natural Sciences [etc.] url p. 225.
- Proceedings of the Indiana Academy of Science. Indianapolis, Ind.[s.n.] url p. 166, p. 179, p. 179.
- Proceedings. Halifax url p. 394, p. 441.
- Publications in botany / Ottawa: The Museum, 1969- url p. 22.
- Report of the Michigan Academy of Science. Lansing, Mich.: The Academy, 1904-1916. url p. 200, p. 200.
- Report of the State Botanist. Albany, N.Y.: University of the State of New York, 1898-1925. url , , , p. 12, p. 150, p. 16.
- Reports of the Survey. Botanical series. Minneapolis [etc.]1892- url p. 409, p. 569, p. 594, p. 714, p. 715, p. 730, p. 791.
- Rocky mountain flowers; an illustrated guide for plantlovers and plant-users; with twenty-five plates in color and twenty-one plates in black and white [by] Frederic Edward Clements...and Edith Schwartz Clements... 1914 New York city, the H.W. Wilson company, 1914. url p. 280.
- Sensitive, threatened, and endangered vascular plants of Montana / Peter Lesica, J. Stephen Shelly. Helena, Mont.: Montana Natural Heritage Program, Montana State Library, 1991. url p. 80.
- Station bulletin. Durham, N.H.: Agricultural Experiment Station, University of New Hampshire, 1948- url p. 98.
- Studies in natural history. Iowa City, Ia. url p. 36.
- Studies on Rocky Mountain flora. New York, New York Botanical Garden, 1899-1913. url p. 14.
- Syllogeus. Ottawa, National Museum of Natural Sciences, 1972-1995. url p. 14, p. 29, p. 31, p. 33, p. 57, p. 60, p. 63, p. 65.
- The Asa Gray bulletin. 1 1952 Ann Arbor, Mich. url , p. 310.
- The Canadian field-naturalist. 54 1940 Ottawa, Ottawa Field-Naturalists' Club. url polunin , adams , p. 134, p. 138, p. 145, p. 149, p. 162, p. 17, p. 175, p. 18, p. 214, p. 237, p. 245, p. 252, p. 282, p. 455, p. 500, p. 89, p. 9, p. 92, p. 99.
- The Canadian record of science. Montreal, Natural History Society. url p. 447, p. 61.
- The Journal of the Iowa Academy of Science: JIAS. Cedar Falls, Iowa: The Academy, 1988- url p. 121.
- The Metaspermae of the Minnesota Valley: a list of the higher seed-producing plants indigenous to the drainage-basin of the Minnesota River / by Conway MacMillan. Minneapolis: Geological and Natural History Survey of Minnesota, 1892. url p. 714, p. 715, p. 730, p. 791.
- The Metaspermae of the Minnesota valley; a list of the higher seed-producing plants indigenous to the drainage-basin of the Minnesota river. Minneapolis[Harrison & Smith, State Printers]1892 url p. 714, p. 715, p. 730, p. 791.
- The Natural history of the Toronto Region, Ontario, Canada / edited by J.H. Faull. -- Toronto: Canadian Institute, 1913. url .
- The Ohio journal of science. Columbus, Ohio, The Ohio State University and the Ohio Academy of Science url p. 416.
- The Proceedings and transactions of the Nova Scotian Institute of Science. Halifax, Nova Scotian Institute of Science. url p. 441.
- The Proceedings of the Iowa Academy of Science. Des moines, Iowa: The Academy, [1889-1987] url p. 121.
- The native flora of the vicinity of Cold Spring Harbor, L.I., New York. n.p., 1925 url p. 208.
- The natural history of the Toronto region, Ontario, Canada / edited by J.H. Faull. Toronto: Canadian Institute, 1913. url p. 140.
- The plants of Michigan; simple keys for the identification of the native seed plants of the state, by Henry Allan Gleason. Ann Arbor, G. Wahr, c1918. url p. 116.
- The plants of Prince Edward Island / Ottawa: Research Branch, Agriculture Canada, 1985. url p. 264.
- The vascular flora of the eastern Penobscot Bay region, Maine. [Portland, Maine, 1919. url p. 286.
- The weed flora of Iowa / [by L. H. Pammel; with the collaboration of Charlotte M. King. .. et al.] Des Moines: Iowa Geological Survey, 1913. url p. 502.
- The weed flora of Iowa Des Moines, Iowa geological survey, 1913. url .
- The weed flora of Iowa. .. Des Moines, Iowa Geological Survey, 1913. url p. 502.
- Torreya. Burlington, Vt., Torrey Botanical Club, 1901-1945. url p. 110, p. 127, p. 48, p. 72.
- Transactions of the Illinois State Academy of Science. Springfield, Ill., Illinois State Academy of Science [etc.] url p. 105.
- Transactions of the Illinois natural history society. Ed. by C.D. Wilber. Springfield, 1861. url p. 141.
- Who's who among the wild flowers / compiled and illustrated by W. I. Beecroft; with an introd. by Frances Duncan. New York: Moffat, Yard, 1910. url p. 172, p. 351.
- Who's who among the wild flowers; comp. and illustrated by W. I. Beecroft, with an introduction by Frances Duncan. New York, Moffat, Yard and company, 1910. url p. 172, p. 351.
- Wild flowers east of the Rockies / by Chester A. Reed. New York: Doubleday, Page, 1910. url p. 400, p. 401, p. 416.
- Wild flowers east of the Rockies. Worcester, Mass., Reed, 1910. url p. 400, p. 401, p. 416.
- Zoologist. London.1843-1916 url p. 7093, p. 7093.
- Beaman, J. H. 1990. Revision of Hieracium (Asteraceae) in Mexico and Central America. Syst. Bot. Monogr. 29: 177.
- Fernald, M. L. 1943c. Notes on Hieracium. Rhodora 45: 317325.
- Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 & ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
- Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 10, 2012.
- Global Biodiversity Information Facility. Accessed December 06, 2007. http://www.gbif.org Mediated distribution data from 2 providers.
Accessed through GBIF Data Portal December 06, 2007:
- Biodiversity Heritage Library NamebankID: 2658733
- Catalogue of Life Accepted Name Code: ITS-37700
- Global Biodiversity Information Facility Taxonkey: 13749905
- Globally Unique Identifier: urn:lsid:ipni.org:names:215789-1
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 37700
- Natural Heritage Network Species Identifier: PDAST4W0S1 PDAST4W0C0
- U.S.D.A. Plant Symbol: HIKAF HIUM
- Zipcode Zoo Species Identifier: 42957
- John L. Strother "Hieracium". in Flora of North America Vol. 19, 20 and 21 Page 219, 278, 279. Oxford University Press. Online at EFloras.org. [back]
- Mean = 255.830 meters (839.337 feet), Standard Deviation = 217.930 based on 42 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]