View source for Horkelia fusca var. parviflora

{{Treatment/ID
|accepted_name=Horkelia fusca var. parviflora
|accepted_authority=(Nuttall ex Hooker & Arnott) Wawra
|publications={{Treatment/Publication
|title=Itin. Princ. S. Coburgi
|place=1: 17. 1883
|year=1883
}}
|common_names=Small-flowered horkelia
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Horkelia parviflora
|authority=Nuttall ex Hooker & Arnott
|rank=species
|publication_title=Bot. Beechey Voy.,
|publication_place=338. 1839
}}
|synonyms={{Treatment/ID/Synonym
|name=H. fusca subsp. parviflora
|authority=(Nuttall ex Hooker & Arnott) D. D. Keck
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Potentilla andersonii
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=P. douglasii var. parviflora
|authority=(Nuttall ex Hooker & Arnott) J. T. Howell
|rank=variety
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Horkelia;Horkelia sect. Capitatae;Horkelia fusca;Horkelia fusca var. parviflora
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Potentilleae]]</div><div class="higher-taxon"><small>genus</small>[[Horkelia]]</div><div class="higher-taxon"><small>section</small>[[Horkelia sect. Capitatae]]</div><div class="higher-taxon"><small>species</small>[[Horkelia fusca]]</div><div class="higher-taxon"><small>variety</small>[[Horkelia fusca var. parviflora]]</div></div>
|volume=Volume 9
|mention_page=page 242, 260, 261
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem some measurement"><b>Stems </b>1–4.5 dm.</span> <span class="statement" id="st-d0_s1" data-properties="basal leaf coloration;basal leaf atypical some measurement;basal leaf some measurement"><b>Basal </b>leaves green, 4–15 (–18) cm;</span> <span class="statement" id="st-d0_s2" data-properties="leaflet quantity;leaflet shape;leaflet atypical length;leaflet length;leaflet atypical width;leaflet atypical width;leaflet width;leaflet quantity;leaflet width;leaflet shape;leaflet quantity;tooth atypical quantity;tooth quantity;surface prominence;surface pubescence;surface pubescence;surface pubescence">leaflets 4–8 per side, cuneate to broadly obovate, 5–15 (–20) × (2–) 5–10 (–15) mm, 1/2 as wide to wider than long, divided 1/4–1/2 to midrib into 4–6 (–10) teeth, surfaces not obscured, sparsely to moderately hirsute or villous, sometimes glabrate.</span> <span class="statement" id="st-d0_s3" data-properties="cauline leaf quantity"><b>Cauline </b>leaves 1–3 (or 4);</span> <span class="statement" id="st-d0_s4" data-properties="proximalmost leaf quantity">leaflets of proximalmost 2–4 (or 5) per side.</span> <span class="statement" id="st-d0_s5" data-properties="inflorescence coloration;inflorescence architecture;stem quantity;glomerule architecture;glandular-hair architecture"><b>Inflorescences </b>green to purplish, congested to open, usually comprising less than 1/4 of stem, composed of 5–20-flowered glomerules, glandular-hairs not red-septate;</span> <span class="statement" id="st-d0_s6" data-properties="bract shape">bracts acute-lobed, not obscuring pedicels and flowers at maturity.</span> <span class="statement" id="st-d0_s7" data-properties="epicalyx bractlet atypical some measurement;epicalyx bractlet some measurement"><b>Flowers:</b> epicalyx bractlets 1–2 (–3) mm;</span> <span class="statement" id="st-d0_s8" data-properties="hypanthium length;hypanthium width">hypanthium 1.5–2 × 2–3.5 mm;</span> <span class="statement" id="st-d0_s9" data-properties="petal atypical some measurement;petal some measurement">petals 2–4.5 (–6.5) mm;</span> <span class="statement" id="st-d0_s10" data-properties="filament some measurement;filament length or size;anther some measurement">filaments 0.2–1 mm, usually longer than wide, anthers 0.3–0.5 mm;</span> <span class="statement" id="st-d0_s11" data-properties="style some measurement">styles 0.9–1.1 mm.</span> <span class="statement" id="st-d0_s12" data-properties="achene some measurement;2n chromosome quantity"><b>Achenes </b>1–1.2 mm. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Dry meadow edges, in conifer woodlands, mainly on volcanic or granitic soil
|elevation=800–3300 m
|distribution=Calif.;Idaho;Nev.;Oreg.;Wyo.
|discussion=<p>Variety parviflora is the most widespread and polymorphic in the species and might represent the repository for variation that is not accommodated by the other, more tightly circumscribed varieties. Population clusters occur in three discrete areas: the Sierra Nevada of eastern California and adjacent Nevada, the mountains of northern California extending north in the Cascade Range to central Oregon, and the mountains of central Idaho. Each of these three areas has plants that differ slightly from those of the other two.</p><!--
--><p>The most distinct phase is found in the Cascade Range of Oregon, with larger-than-average petals and highly branched inflorescences. Plants from Lost Prairie in eastern Linn County are particularly anomalous, with petals to 6.5 mm; further studies may indicate that these deserve separate recognition.</p><!--
--><p>Plants from the Sierra Nevada tend to have smaller petals, and those in the higher southern Sierra Nevada tend to have capitate or subcapitate inflorescences. From about Lake Tahoe northward, inflorescences tend to be somewhat more open but still congested compared to the Oregon phase.</p><!--
--><p>The Idaho phase, represented by the type of var. parviflora, has petals that run the full range from 2–4 mm, with most individuals having a slightly branched inflorescence. Unlike those of the other two phases, both the hypanthia and sepals are often purple; the hypanthium is otherwise typically greenish with only the sepals themselves a dark purple. The sole Wyoming record (D. R. Goddard 1027, F, UC) has yet to be confirmed by more recent collections in Yellowstone National Park. These plants have pale inflorescences, relatively blunt sepals, and short epicalyx bractlets, differing in these features from the closest populations in central Idaho. For reports from Montana, see species discussion.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Horkelia fusca var. parviflora
|authority=(Nuttall ex Hooker & Arnott) Wawra
|rank=variety
|parent rank=species
|synonyms=H. fusca subsp. parviflora;Potentilla andersonii;P. douglasii var. parviflora
|basionyms=Horkelia parviflora
|family=Rosaceae
|phenology=Flowering summer.
|habitat=Dry meadow edges, in conifer woodlands, mainly on volcanic or granitic soil
|elevation=800–3300 m
|distribution=Calif.;Idaho;Nev.;Oreg.;Wyo.
|reference=None
|publication title=Itin. Princ. S. Coburgi
|publication year=1883
|special status=Endemic;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9_417.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Horkelia
|section=Horkelia sect. Capitatae
|species=Horkelia fusca
|variety=Horkelia fusca var. parviflora
|2n chromosome quantity=28
|achene some measurement=1mm;1.2mm
|anther some measurement=0.3mm;0.5mm
|basal leaf atypical some measurement=15cm;18cm
|basal leaf coloration=green
|basal leaf some measurement=4cm;15cm
|bract shape=acute-lobed
|cauline leaf quantity=1;3
|epicalyx bractlet atypical some measurement=2mm;3mm
|epicalyx bractlet some measurement=1mm;2mm
|filament length or size=usually longer than wide
|filament some measurement=0.2mm;1mm
|glandular-hair architecture=red-septate
|glomerule architecture=5-20-flowered
|hypanthium length=1.5mm;2mm
|hypanthium width=2mm;3.5mm
|inflorescence architecture=congested;open
|inflorescence coloration=green;purplish
|leaflet atypical length=15mm;20mm
|leaflet atypical width=10mm;15mm
|leaflet length=5mm;15mm
|leaflet quantity=1/4;1/2
|leaflet shape=divided;cuneate;broadly obovate
|leaflet width=wide to wider than long;5mm;10mm
|petal atypical some measurement=4.5mm;6.5mm
|petal some measurement=2mm;4.5mm
|proximalmost leaf quantity=2;4
|stem quantity=0;1/4
|stem some measurement=1dm;4.5dm
|style some measurement=0.9mm;1.1mm
|surface prominence=not obscured
|surface pubescence=glabrate;villous;hirsute
|tooth atypical quantity=6;10
|tooth quantity=4;6
}}<!--

-->[[Category:Treatment]][[Category:Horkelia fusca]]