View source for Taraxacum alaskanum

{{Treatment/ID
|accepted_name=Taraxacum alaskanum
|accepted_authority=Rydberg
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=28: 512. 1901
|year=1901
}}
|common_names=Alaska dandelion
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Taraxacum kamtschaticum
|authority=Dahlstedt
}} {{Treatment/ID/Synonym
|name=Taraxacum pseudokamtschaticum
|authority=Jurtzev
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Taraxacum;Taraxacum alaskanum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Taraxacum]]</div><div class="higher-taxon"><small>species</small>[[Taraxacum alaskanum]]</div></div>
|volume=Volume 19
|mention_page=page 242, 244, 252
|treatment_page=page 251
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>(1.5–)3–9(–16, mostly in fruit) cm; taproots sometimes branched. <b>Stems</b> 1–3+, ascending, proximally purplish, glabrous or glabrate. <b>Leaves</b> fewer than 10, horizontal to patent (green); petioles slender or decurrent lines from bases; blades oblanceolate or narrowly oblong (usually runcinate), (1.5–)2.2–11.6 × 0.4–2.2 cm, bases attenuate, margins usually lobed regularly, ± deeply, in 3–5(–6) pairs, occasionally (younger) only toothed or denticulate, lobes usually retrorse, occasionally straight or antrorse, triangular to narrowly triangular, terminals often largest, acuminate to acute-rounded, sometimes toothed, teeth 0(–1) on lobes or sinuses, triangular, apices obtuse to acute, faces glabrous. <b>Calyculi</b> of 7–9, spreading, becoming reflexed to revolute, often purplish, particularly adaxially, ovate to lance-ovate or elliptic bracklets in 2 series, 2.5–4.5 × 1.7–2.7 mm, margins not or narrowly scarious, hyaline, apices acuminate to caudate, tips sometimes flaring, scarious, erose, hornless. <b>Involucres</b> dark green, often glaucous, often purplish, particularly adaxially, cylindro- to narrowly campanulate, 9–14 mm. <b>Phyllaries</b> 7–8 in 3 series, lanceolate, 1.4–2.6(–4) mm wide, margins not scarious (some outer) to narrowly scarious, apices long-acuminate, tips purplish or grayish, often flared, scarious, hornless. <b>Florets</b> 30–55+; corollas yellow (gray-striped abaxially, sometimes becoming orange purplish with age on drying), outer 11–14 × 1.5–2.4 mm. <b>Cypselae</b> maroon to brown or reddish brown, sometimes grayish, bodies oblanceoloid (sometimes narrowly), 3–3.8 mm, cones conic, 0.8–1 mm, beaks stout, 3–6 mm, ribs 15 narrow (6 prominent), faces proximally ± tuberculate, ± muricate in distal 1/3–1/2 (or less); pappi white to yellowish, 4–6.5 mm. <b>2n</b> = 24, 32 (as T. kamtschaticum).</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Alpine slopes and tundra, arctic tundra, rich arctic seaside bluffs
|elevation=0–2200 m
|distribution=Yukon;Alaska;Russian Far East.
|discussion=<p>In all the specimens examined from Alaska, it is not possible to find consistent differences between <i>Taraxacum alaskanum</i> and T. kamtschaticum (as applied in Alaska; or T. pseudokamtschaticum). Assignment to one or the other species appears random. The leaf character used in keys to separate the entities does not work, or at least is not matched by specimens as determined; cypsela color varies within species, and the slight difference noted is not sufficient to warrant separation. Neither is there a significant size difference between coastal and inland material. The name <i>T. sibiricum</i> Dahlstedt has been applied mistakenly by American authors to this entity.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Taraxacum alaskanum
|author=
|authority=Rydberg
|rank=species
|parent rank=genus
|synonyms=Taraxacum kamtschaticum;Taraxacum pseudokamtschaticum
|basionyms=
|family=Asteraceae
|phenology=Flowering summer.
|habitat=Alpine slopes and tundra, arctic tundra, rich arctic seaside bluffs
|elevation=0–2200 m
|distribution=Yukon;Alaska;Russian Far East.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1901
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V19_331.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Taraxacum
|species=Taraxacum alaskanum
}}<!--

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