View source for Epilobium hallianum

{{Treatment/ID
|accepted_name=Epilobium hallianum
|accepted_authority=Haussknecht
|publications={{Treatment/Publication
|title=Monogr. Epilobium,
|place=261. 1884
|year=1884
|other_info_on_pub=(as halleanum)
}}
|common_names=Glandular willowherb
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Epilobium brevistylum var. pringleanum
|authority=(Haussknecht) Jepson
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. brevistylum var. subfalcatum
|authority=(Trelease) Munz
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. brevistylum var. tenue
|authority=(Trelease) Jepson
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. brevistylum var. ursinum
|authority=(Parish ex Trelease) Jepson
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. delicatum var. tenue
|authority=Trelease
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. glandulosum var. tenue
|authority=(Trelease) C. L. Hitchcock
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. pringleanum
|authority=Haussknecht
|rank=species
}} {{Treatment/ID/Synonym
|name=E. pringleanum var. tenue
|authority=(Trelease) Munz
|rank=variety
}} {{Treatment/ID/Synonym
|name=E. ursinum
|authority=Parish ex Trelease
|rank=species
}} {{Treatment/ID/Synonym
|name=E. ursinum var. subfalcatum
|authority=Trelease
|rank=variety
}}
|hierarchy=Onagraceae;Onagraceae subfam. Onagroideae;Onagraceae tribe Epilobieae;Epilobium;Epilobium sect. Epilobium;Epilobium hallianum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Onagraceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Onagraceae subfam. Onagroideae]]</div><div class="higher-taxon"><small>tribe</small>[[Onagraceae tribe Epilobieae]]</div><div class="higher-taxon"><small>genus</small>[[Epilobium]]</div><div class="higher-taxon"><small>section</small>[[Epilobium sect. Epilobium]]</div><div class="higher-taxon"><small>species</small>[[Epilobium hallianum]]</div></div>
|volume=Volume 10
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs </b>with small, 3–6 mm, round or oblong, compact turions 1–5 cm below ground. <b>Stems</b> strict, erect, terete, 2–50(–60) cm, rarely branched only in larger plants, subglabrous proximal to inflorescence except for raised strigillose lines decurrent from margins of petioles, or sometimes ± densely long-villous throughout with inconspicuous decurrent lines. <b>Leaves</b> opposite proximally, alternate on inflorescence, subsessile or proximally with petioles 1–1.5 mm; blade ovate proximally to lanceolate or narrowly elliptic distally, 0.5–4.7 × 0.2–1.4 cm, base rounded to cuneate, margins subentire proximally to denticulate distally, 8–20 teeth per side, veins inconspicuous, 3–6 per side, apex obtuse to subacute, surfaces mostly glabrous with strigillose margins; bracts much reduced. <b>Inflorescences</b> usually nodding in bud, erect later, open racemes, sometimes congested, usually mixed strigillose and glandular puberulent, rarely also mixed villous, or rarely subglabrous. <b>Flowers</b> erect; buds 2–5 × 1–2 mm; pedicel 3–8 mm; floral tube 0.5–1.7 × 0.8–1.6 mm, with slightly raised ring of spreading hairs at mouth inside; sepals green, 1.2–2.8 × 0.5–1 mm, abaxial surface subglabrous or sparsely glandular puberulent; petals white, often fading pink, 1.6–5.5 × 1.2–3 mm, apical notch 0.3–1.2 mm; filaments white or cream, those of longer stamens 0.6–2.5 mm, those of shorter ones 0.4–1.5 mm; anthers cream, 0.2–0.9 × 0.2–0.5 mm; ovary 10–14 mm, strigillose and glandular puberulent or subglabrous; style cream, 0.8–5 mm, stigma clavate, entire, 0.4–1.2 × 0.3–0.7 mm, usually surrounded by, rarely exserted beyond, anthers. <b>Capsules</b> very narrowly cylindrical, (15–)24–60 mm, surfaces usually subglabrous to mixed strigillose and glandular puberulent, rarely sparsely villous; pedicel 8–40 mm. <b>Seeds</b> narrowly fusiform to narrowly obovoid, 1.1–1.6 × 0.4–0.6 mm, chalazal collar ± conspicuous, 0.05–0.2 mm, light brown, surface papillose; coma easily detached, white, 3–6 mm. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Sep.
|habitat=Semi-shaded stream banks, wet grassy slopes or meadows, bogs, seasonally wet sites, vernal pools.
|elevation=100–3700 m.
|distribution=Alta.;B.C.;Sask.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|discussion=<p>Epilobium hallianum has condensed fleshy turions and generally strict habit, suggesting an affinity with E. ciliatum or E. saximontanum, both with the AA arrangement. However, E. hallianum has the BB arrangement (S. R. Seavey and P. H. Raven 1978) and apparently more distant relationship to those other species.</p><!--
--><p>In different parts of its geographical range Epilobium hallianum shows considerable morphological variability, especially in leaf shape and margins, and in type and pattern of stem vestiture, including plants in the southern part of its range with densely villous stems that have been treated as E. ursinum. In part because of this variability and in part because the very characteristic condensed turions are easily lost during collection and/or often overlooked, E. hallianum is frequently misidentified.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Epilobium hallianum
|authority=Haussknecht
|rank=species
|parent rank=section
|synonyms=Epilobium brevistylum var. pringleanum;E. brevistylum var. subfalcatum;E. brevistylum var. tenue;E. brevistylum var. ursinum;E. delicatum var. tenue;E. glandulosum var. tenue;E. pringleanum;E. pringleanum var. tenue;E. ursinum;E. ursinum var. subfalcatum
|basionyms=
|family=Onagraceae
|phenology=Flowering Jun–Sep.
|habitat=Semi-shaded stream banks, wet grassy slopes or meadows, bogs, seasonally wet sites, vernal pools.
|elevation=100–3700 m.
|distribution=Alta.;B.C.;Sask.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|reference=None
|publication title=Monogr. Epilobium,
|publication year=1884
|special status=
|source xml=https://xjsachs2@bitbucket.org/aafc-mbb/fna-data-curation.git/src/e39f0e846f172941159b2045254d62d10d9823f6/coarse_grained_fna_xml/V10/V10_315.xml
|subfamily=Onagraceae subfam. Onagroideae
|tribe=Onagraceae tribe Epilobieae
|genus=Epilobium
|section=Epilobium sect. Epilobium
|species=Epilobium hallianum
}}<!--

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