View source for Hypericum scouleri

{{Treatment/ID
|accepted_name=Hypericum scouleri
|accepted_authority=Hooker
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=1: 111. 1831
|year=1831
}}
|common_names=Scouler’s St. John’s wort
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Hypericum formosum subsp. scouleri
|authority=(Hooker) C. L. Hitchcock
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=H. formosum var. scouleri
|authority=(Hooker) J. M. Coulter
|rank=variety
}} {{Treatment/ID/Synonym
|name=H. nortoniae
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=H. scouleri subsp. nortoniae
|authority=(M. E. Jones) J. M. Gillett
|rank=subspecies
}}
|hierarchy=Hypericaceae;Hypericum;Hypericum sect. Hypericum;Hypericum scouleri
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hypericaceae]]</div><div class="higher-taxon"><small>genus</small>[[Hypericum]]</div><div class="higher-taxon"><small>section</small>[[Hypericum sect. Hypericum]]</div><div class="higher-taxon"><small>species</small>[[Hypericum scouleri]]</div></div>
|volume=Volume 6
|mention_page=page 98
|treatment_page=page 100
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism orientation;whole_organism orientation;whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form;base architecture;base growth form or orientation;base architecture"><b>Herbs </b>erect or ascending, with rooting, creeping, branching base, 0.5–6.6 (–8) dm.</span> <span class="statement" id="st-d0_s1" data-properties="internode architecture;internode architecture;gland coloration;gland coloration"><b>Stems:</b> internodes usually weakly 2-lined, sometimes not lined, without black glands, rarely with reddish glands.</span> <span class="statement" id="st-d0_s2" data-properties="leaf orientation;leaf orientation;leaf architecture;leaf architecture"><b>Leaves </b>usually spreading, rarely erect, sessile or (proximal) subpetiolate;</span> <span class="statement" id="st-d0_s3" data-properties="blade shape;blade atypical length;blade length;blade atypical width;blade width;base shape;margin shape;apex shape;pair quantity;tertiary-vein architecture or coloration or relief;gland coloration;gland position;gland atypical quantity;gland position">blade oblongelliptic or elliptic to triangular-ovate or (proximal) obovate, 12–28 (–32) × 6–15 (–18) mm, base subcordate to rounded or (proximal) cuneate, margins plane, apex obtuse to rounded, midrib with 4–5 pairs of branches, tertiary-veins not densely reticulate, black glands intramarginal (± dense) and, rarely, (1–2) laminar (distal).</span> <span class="statement" id="st-d0_s4" data-properties="inflorescence shape;inflorescence architecture"><b>Inflorescences </b>cylindric to narrowly pyramidal, (1–) 8–20-flowered.</span> <span class="statement" id="st-d0_s5" data-properties="flower diameter;flower diameter"><b>Flowers </b>6–15 (–25) mm diam.;</span> <span class="statement" id="st-d0_s6" data-properties="sepal arrangement;sepal orientation;sepal shape;sepal size;sepal length;sepal width;apex shape">sepals not or scarcely imbricate, erect in fruit, ovate to lanceolate or narrowly oblong, unequal to subequal, 2.5–5.5 × 1–2 mm, apex acute to rounded;</span> <span class="statement" id="st-d0_s7" data-properties="petal coloration;petal coloration;petal shape;petal some measurement">petals golden yellow, sometimes red-tinged, oblanceolate, 7–12 mm;</span> <span class="statement" id="st-d0_s8" data-properties="stamen atypical quantity;stamen quantity">stamens 50–90 (–109);</span> <span class="statement" id="st-d0_s9" data-properties="anther coloration">anther gland black;</span> <span class="statement" id="st-d0_s10" data-properties="style some measurement">styles 2–8 mm.</span> <span class="statement" id="st-d0_s11" data-properties="capsule shape;capsule length;capsule width;vitta dehiscence or orientation"><b>Capsules </b>oblanceoloid, 6–10 × 3.5–6 mm, with longitudinal vittae.</span> <span class="statement" id="st-d0_s12" data-properties="seed shape;seed atypical some measurement;seed some measurement"><b>Seeds </b>not carinate, (0.5–) 0.7–0.8 mm;</span> <span class="statement" id="st-d0_s13" data-properties="">testa linear-reticulate.</span> <span class="statement" id="st-d0_s14" data-properties="testa architecture or coloration or relief;2n chromosome quantity">2n = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer (Jun–Sep).
|habitat=Wet meadows and banks, coniferous forests, screes, lake margins, marshes, tidal shores
|elevation=0–2900 m
|distribution=Alta.;B.C.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;Utah;Wash.;Wyo.;Mexico (Baja California);Mexico (Baja California Sur);Mexico (Chihuahua);Mexico (Coahuila);Mexico (Durango);Mexico (Sonora);Mexico (Zacatecas)
|discussion=<p>Some authors have included Hypericum scouleri in central Mexican H. formosum Kunth as a synonym, subspecies, or variety; the similarities in sepal form and glandularity between these species are due to convergence. Hypericum formosum is related to another Mexican species (H. oaxacanum R. Keller); the affinities of H. scouleri are with the H. attenuatum group from eastern Asia. Hypericum scouleri itself does occur in northern and central Mexico as far south as Michoacán, México, and Hidalgo, where it is known by the synonym H. simulans Rose.</p><!--
--><p>J. M. Gillett and N. K. B. Robson (1981) treated the dwarf alpine form of Hypericum scouleri as subsp. nortoniae. Further work has revealed a range of intermediate forms between the two putative subspecies, which prevents their recognition. Likewise, the differentiation of a southern population (H. formosum subsp. formosum in the sense of C. L. Hitchcock) from a northern one [H. formosum subsp. scouleri (Hooker) C. L. Hitchcock] based on the broader, blunter, and less-glandular sepals in the latter, does not appear warranted.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Hypericum scouleri
|authority=Hooker
|rank=species
|parent rank=section
|synonyms=Hypericum formosum subsp. scouleri;H. formosum var. scouleri;H. nortoniae;H. scouleri subsp. nortoniae
|basionyms=
|family=Hypericaceae
|phenology=Flowering summer (Jun–Sep).
|habitat=Wet meadows and banks, coniferous forests, screes, lake margins, marshes, tidal shores
|elevation=0–2900 m
|distribution=Alta.;B.C.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;Utah;Wash.;Wyo.;Mexico (Baja California);Mexico (Baja California Sur);Mexico (Chihuahua);Mexico (Coahuila);Mexico (Durango);Mexico (Sonora);Mexico (Zacatecas)
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1831
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V6/V6_176.xml
|genus=Hypericum
|section=Hypericum sect. Hypericum
|species=Hypericum scouleri
|2n chromosome quantity=16
|anther coloration=gland black
|apex shape=acute;rounded
|base architecture=branching;rooting
|base growth form or orientation=creeping
|base shape=subcordate;rounded or cuneate
|blade atypical length=28mm;32mm
|blade atypical width=15mm;18mm
|blade length=12mm;28mm
|blade shape=elliptic;triangular-ovate or obovate
|blade width=6mm;15mm
|capsule length=6mm;10mm
|capsule shape=oblanceoloid
|capsule width=3.5mm;6mm
|flower diameter=6mm;15mm
|gland atypical quantity=1;2
|gland coloration=black;reddish;black
|gland position=laminar;intramarginal
|inflorescence architecture=(1-)8-20-flowered
|inflorescence shape=cylindric;narrowly pyramidal
|internode architecture=lined;2-lined
|leaf architecture=subpetiolate;sessile
|leaf orientation=erect;spreading
|margin shape=plane
|pair quantity=4;5
|petal coloration=red-tinged;golden yellow
|petal shape=oblanceolate
|petal some measurement=7mm;12mm
|seed atypical some measurement=0.5mm;0.7mm
|seed shape=not carinate
|seed some measurement=0.7mm;0.8mm
|sepal arrangement=imbricate
|sepal length=2.5mm;5.5mm
|sepal orientation=erect
|sepal shape=ovate;lanceolate or narrowly oblong
|sepal size=unequal;subequal
|sepal width=1mm;2mm
|stamen atypical quantity=90;109
|stamen quantity=50;90
|style some measurement=2mm;8mm
|tertiary-vein architecture or coloration or relief=reticulate
|testa architecture or coloration or relief=linear-reticulate
|vitta dehiscence or orientation=longitudinal
|whole_organism atypical some measurement=6.6dm;8dm
|whole_organism growth form=herb
|whole_organism orientation=ascending;erect
|whole_organism some measurement=0.5dm;6.6dm
}}<!--

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