View source for Hypericum crux-andreae

{{Treatment/ID
|accepted_name=Hypericum crux-andreae
|accepted_authority=(Linnaeus) Crantz
|publications={{Treatment/Publication
|title=Inst. Rei Herb.
|place=2: 520. 1766
|year=1766
}}
|common_names=St. Peter’s wort
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Ascyrum crux-andreae
|authority=Linnaeus
|rank=species
|publication_title=Sp. Pl.
|publication_place=2: 787. 1753
}}
|synonyms={{Treatment/ID/Synonym
|name=A. cuneifolium
|authority=Chapman
|rank=species
}} {{Treatment/ID/Synonym
|name=A. grandiflorum
|authority=Rafinesque
|rank=species
}} {{Treatment/ID/Synonym
|name=A. simplex
|authority=Zeyher ex Turczaninow
|rank=species
}} {{Treatment/ID/Synonym
|name=A. stans var. obovatum
|authority=Chapman ex Torrey & A. Gray
|rank=variety
}} {{Treatment/ID/Synonym
|name=Hypericoides crux-andreae
|authority=W. P. Adams & N. Robson
|rank=species
}} {{Treatment/ID/Synonym
|name=Hypericum stans
|authority=
|rank=species
}}
|hierarchy=Hypericaceae;Hypericum;Hypericum crux-andreae
|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>species</small>[[Hypericum crux-andreae]]</div></div>
|volume=Volume 6
|mention_page=page 74, 86, 87
|treatment_page=page 85
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> usually erect to suberect, rarely decumbent and rooting, usually unbranched, rarely sparsely branched distally, 1–13.5 dm. <b>Stems</b>: internodes 2–4-lined at first, then 2-winged. <b>Leaf</b> blades usually oblong to elliptic, rarely obovate to oblanceolate or triangular-ovate, 12–36 × 6–16 mm, base articulated, rounded to slightly cordate-amplexicaul, without glandlike auricles, margins plane to subrecurved, apex rounded to obtuse, midrib with to 3 pairs of branches. <b>Inflorescences</b> ± narrowly cylindric to narrowly pyramidal, 1–3(–7)-flowered, branching dichasial, from to 4 proximal nodes. <b>Flowers</b> 20–30 mm diam.; sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate to circular, 9–20 × 9–18 mm, apex apiculate or obtuse to rounded, inner narrowly elliptic to lanceolate, 7–14 × 2–4 mm, apex acute to subacute; petals 4, bright yellow, obovate, 11–18 mm; stamens persistent, 80–100; ovary 3(–4)-merous. <b>Capsules</b> narrowly ellipsoid-ovoid, 7–10 × 5–6.5 mm. <b>Seeds</b> not carinate, 0.8 mm; testa shallowly scalariform. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Moist to dry, pine savannas and flatwoods, meadows, bogs, other wet habitats, lake and pond margins
|elevation=0–1500 m
|distribution=Ala.;Ark.;Del.;D.C.;Fla.;Ga.;Ky.;La.;Md.;Miss.;N.J.;N.Y.;N.C.;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.
|discussion=<p><i>Hypericum crux-andreae</i>, long known as Ascyrum stans, is a derivative of <i>H. frondosum</i> in which the tetramerous tendency in the perianth has become fixed. The low, multistemmed form with cuneate leaves, longer-</p><!--
--><p>pedicellate flowers, and shorter sepals (A. cuneifolium, A. stans <i></i>var.<i> obovatum</i>) cannot be separated from typical <i>H. crux-andreae</i>.</p><!--
--><p>Linnaeus included “<i>Hypericum</i> ex terra mariana, floribus exiguis luteis” under his phrase name for Ascyrum crux-andreae; that element of the protologue refers to <i>H. mutilum</i> Linnaeus; see N. K. B. Robson (1980).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Hypericum crux-andreae
|authority=(Linnaeus) Crantz
|rank=species
|parent rank=genus
|synonyms=A. cuneifolium;A. grandiflorum;A. simplex;A. stans var. obovatum;Hypericoides crux-andreae;Hypericum stans
|basionyms=Ascyrum crux-andreae
|family=Hypericaceae
|phenology=Flowering summer–fall.
|habitat=Moist to dry, pine savannas and flatwoods, meadows, bogs, other wet habitats, lake and pond margins
|elevation=0–1500 m
|distribution=Ala.;Ark.;Del.;D.C.;Fla.;Ga.;Ky.;La.;Md.;Miss.;N.J.;N.Y.;N.C.;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.
|reference=None
|publication title=Inst. Rei Herb.
|publication year=1766
|special status=Endemic;Illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V6/V6_140.xml
|genus=Hypericum
|species=Hypericum crux-andreae
}}<!--

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