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
}} {{Treatment/ID/Synonym
|name=H. formosum var. scouleri
|authority=(Hooker) J. M. Coulter
}} {{Treatment/ID/Synonym
|name=H. nortoniae
|authority=unknown
}} {{Treatment/ID/Synonym
|name=H. scouleri subsp. nortoniae
|authority=(M. E. Jones) J. M. Gillett
}}
|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-undefined" data-properties=""><b>Herbs </b>erect or ascending, with rooting, creeping, branching base, 0.5–6.6(–8) dm. <b>Stems</b>: internodes usually weakly 2-lined, sometimes not lined, without black glands, rarely with reddish glands. <b>Leaves</b> usually spreading, rarely erect, sessile or (proximal) subpetiolate; blade oblong-elliptic 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). <b>Inflorescences</b> cylindric to narrowly pyramidal, (1–)8–20-flowered. <b>Flowers</b> 6–15(–25) mm diam.; 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; petals golden yellow, sometimes red-tinged, oblanceolate, 7–12 mm; stamens 50–90(–109); anther gland black; styles 2–8 mm. <b>Capsules</b> oblanceoloid, 6–10 × 3.5–6 mm, with longitudinal vittae. <b>Seeds</b> not carinate, (0.5–)0.7–0.8 mm; testa linear-reticulate. <b>2n</b> = 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;Baja California Sur;Chihuahua;Coahuila;Durango;Sonora;Zacatecas).
|discussion=<p>Some authors have included <i>Hypericum scouleri</i> 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. <i>Hypericum</i> formosum is related to another Mexican species (H. oaxacanum R. Keller); the affinities of <i>H. scouleri</i> are with the H. attenuatum group from eastern Asia. <i>Hypericum scouleri</i> itself does occur in northern and central Mexico as far south as Michoacán, México, and Hidalgo, where it is known by the synonym <i>H. simulans</i> Rose.</p><!--
--><p>J. M. Gillett and N. K. B. Robson (1981) treated the dwarf alpine form of <i>Hypericum scouleri</i> 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 <i></i></i>subsp.<i><i> scouleri</i> (Hooker) C. L. Hitchcock] based on the broader, blunter, and less-glandular sepals in the latter, does not appear warranted.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Hypericum scouleri
|author=
|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;Baja California Sur;Chihuahua;Coahuila;Durango;Sonora;Zacatecas).
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1831
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V6/V6_176.xml
|genus=Hypericum
|section=Hypericum sect. Hypericum
|species=Hypericum scouleri
}}<!--

-->[[Category:Treatment]][[Category:Hypericum sect. Hypericum]]