View source for Rhododendron tomentosum

{{Treatment/ID
|accepted_name=Rhododendron tomentosum
|accepted_authority=Harmaja
|publications={{Treatment/Publication
|title=Ann. Bot. Fenn.
|place=27: 204. 1990,
}}
|common_names=Labrador or trappers tea
|basionyms={{Treatment/ID/Synonym
|name=Ledum palustre
|authority=Linnaeus
}}
|synonyms={{Treatment/ID/Synonym
|name=Ledum decumbens
|authority=(Aiton) Loddiges ex Steudel
}}{{Treatment/ID/Synonym
|name=Ledum palustre subsp. decumbens
|authority=(Aiton) Hultén
}}{{Treatment/ID/Synonym
|name=Rhododendron subarcticum
|authority=Harmaja
}}{{Treatment/ID/Synonym
|name=Rhododendron tolmachevii
|authority=unknown
}}{{Treatment/ID/Synonym
|name=Rhododendron tomentosum subsp. decumbens
|authority=(Aiton) Elven & D. F. Murray
}}{{Treatment/ID/Synonym
|name=Rhododendron tomentosum var. subarcticum
|authority=(Harmaja) G. D. Wallace
}}
|hierarchy=Ericaceae;Ericaceae subfam. Ericoideae;Rhododendron;Rhododendron tomentosum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ericaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Ericaceae subfam. Ericoideae]]</div><div class="higher-taxon"><small>genus</small>[[Rhododendron]]</div><div class="higher-taxon"><small>species</small>[[Rhododendron tomentosum]]</div></div>
|volume=Volume 8
|mention_page=page 455, 457, 460, 462
|treatment_page=page 459
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> to 0.5 m, rhizomatous. <b>Stems</b> creeping or prostrate; bark ± smooth; twigs unicellular-hairy and with flattened, glandular scales, scales often obscured by dense, ferruginous, long-crisped, multicellular hairs. <b>Leaves</b> persistent, (fragrant when crushed); petiole with unicellular and/or peltate scales and, sometimes, ferruginous, long-crisped hairs; blade ± linear, 2–5 × 1–4 cm (often much longer than wide), coriaceous, margins entire, revolute, glabrous, apex acute, abaxial surface with sparse to dense, glandular-peltate scales without broad rim, scales often obscured by dense (to sparse), ferruginous, long-crisped, multicellular hairs sometimes forming dense, ± uniform mat, adaxial surface rugose with scattered, lepidote scales and sometimes also with white, unicellular hairs along impressed midrib, midrib usually lanate. <b>Floral</b> bud scales with lepidote scales and unicellular-hairy abaxially, margins unicellular-hairy. <b>Inflorescences</b> slightly rounded, 10–35-flowered; bracts lepidote abaxially, margins ciliate, long-crisped-hairy, sometimes also unicellular-hairy. <b>Pedicels</b> 5–26 mm, sparsely eglandular-hairy (hairs ferruginous, elongated), with ferruginous, long-crisped, unicellular and/or peltate scales, sometimes also long-stalked, multicellular glandular-hairy. <b>Flowers</b> radially symmetric, opening after leaves (of flowering shoots), ± erect, not fragrant; calyx lobes ca. 1 mm, outer surface densely to sparsely unicellular-hairy (hairs tan), and multicellular, stipitate-glandular-hairy (hairs red) on margins; corolla white to cream, without blotch, ± rotate, 2–8 mm, inner surface often densely unicellular-hairy, petals appearing distinct or only slightly connate basally, lobes 5–7 mm; stamens 10, exserted, ± equal, 4.4–8.5 mm. <b>Capsules</b> borne on apex of sharply recurved pedicels, 2.5–5 × 1–3 mm (only slightly longer than wide), with sparse to dense, lepidote scales, acropetally dehiscent. <b>Seeds</b> somewhat elongated beyond narrow ends; testa closely appressed. <b>2n</b> = 26, 52.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer.
|habitat=Bogs, muskeg, tundra, raised beach ridges
|elevation=0-1800 m
|distribution=Greenland;Alta.;B.C.;Man.;Nfld. and Labr. (Nfld.);N.W.T.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Europe;Asia.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Rhododendron tomentosum
|author=
|authority=Harmaja
|rank=species
|parent rank=genus
|synonyms=Ledum decumbens;Ledum palustre subsp. decumbens;Rhododendron subarcticum;Rhododendron tolmachevii;Rhododendron tomentosum subsp. decumbens;Rhododendron tomentosum var. subarcticum
|basionyms=Ledum palustre
|family=Ericaceae
|phenology=Flowering spring–summer.
|habitat=Bogs, muskeg, tundra, raised beach ridges
|elevation=0-1800 m
|distribution=Greenland;Alta.;B.C.;Man.;Nfld. and Labr. (Nfld.);N.W.T.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Europe;Asia.
|reference=None
|publication title=Ann. Bot. Fenn.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V8/V8_898.xml
|subfamily=Ericaceae subfam. Ericoideae
|genus=Rhododendron
|species=Rhododendron tomentosum
}}<!--

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