View source for Bucklandiella occidentalis

{{Treatment/ID
|accepted_name=Bucklandiella occidentalis
|accepted_authority=(Renauld & Cardot) Bednarek-Ochyra & Ochyra
|publications={{Treatment/Publication
|title=in R. Ochyra et al., Cens. Cat. Polish Mosses,
|place=146. 2003,
}}
|basionyms={{Treatment/ID/Basionym
|name=Racomitrium heterostichum var. occidentale
|authority=Renauld & Cardot
|rank=variety
|publication_title=Bot. Gaz.
|publication_place=15: 41. 1890
}}
|synonyms={{Treatment/ID/Synonym
|name=Racomitrium occidentale
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Occidentale
|authority=(Renauld & Cardot) Frye
|rank=unranked
}}
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Racomitrioideae;Bucklandiella;Bucklandiella sect. Sudeticae;Bucklandiella occidentalis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Grimmiaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Grimmiaceae subfam. Racomitrioideae]]</div><div class="higher-taxon"><small>genus</small>[[Bucklandiella]]</div><div class="higher-taxon"><small>section</small>[[Bucklandiella sect. Sudeticae]]</div><div class="higher-taxon"><small>species</small>[[Bucklandiella occidentalis]]</div></div>
|volume=Volume 27
|mention_page=page 269, 281, 284
|treatment_page=page 283
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>fairly robust, rigid and coarse, in loose tufts or patches, olive green distally, brown proximally. <b>Stems</b> 2–4(–8) cm, erect-ascending to erect or prostrate, sparingly irregularly branched. <b>Leaves</b> erect-appressed when dry, erect-spreading to patent when moist, straight to slightly curved, narrowly lanceolate, (2.2–)2.8–3.5(–3.8) × 0.5–0.8 mm; margins variously recurved on both sides to 1/2–3/4 of the way up the leaf, lumpy and wavy, 2-stratose distally in 1–2(–4) cells rows, occasionally with 3–4-stratose spots, variously 1–2-stratose in the proximal portion; pilose, awns hyaline, 0.3–0.8 µm, terete, erect, slightly flexuose to recurved when dry, sharply spinulose-denticulate, not decurrent; costa percurrent, in transverse-section strongly convex on the abaxial side, distinctly asymmetric in outline, with a more or less continuous central abaxial groove and with indistinct lateral furrows in places, (60–)70–90(–110) µm wide in the proximal portion, (40–)45–65 µm wide near the apex, 3–5-stratose in the base with (2–)3–4(–5) adaxial cells, 3–4-stratose with 2–4 adaxial cells in the median part and 2–3-stratose distally with 2–3 adaxial cells; laminal cells smooth, 1-stratose with occasional 2-layered strands; basal laminal cells elongate, 25–60 × 8–10 µm, nodulose-sinuose; alar cells slightly differentiated; medial and distal laminal cells quadrate to rectangular, 9–25 × 8–10 µm, usually becoming oblate at the margins. <b>Inner</b> perichaetial leaves undifferentiated, lanceolate, pilose. <b>Seta</b> yellowish brown to brown, 4–7 mm. <b>Capsule</b> brown, weakly lustrous to dull, narrowly ovoid to cylindric, somewhat wrinkled, 1–3 × 0.4–0.6 mm; operculum conical-rostrate, with a straight or somewhat oblique beak; peristome teeth lanceolate, 310–550 µm, brown, papillose, imperfectly split distally into 2 prongs or only perforated, arising from a low basal membrane, 20–35 µm high. <b>Spores</b> 12–17 µm.</span><!--

-->{{Treatment/Body
|habitat=Dry or fairly moist acidic rocks, boulders and outcrops
|elevation=low to high elevations (0-1600 m)
|distribution=B.C.;Calif.;Oreg.;Wash.
|discussion=<p><i>Bucklandiella occidentalis</i> occurs from Vancouver Island and southern British Columbia to central California. The species is readily identified by its costa asymmetric and somewhat winged due to the presence of a shallow furrow on its abaxial side in the distal half. This is a unique feature, unknown in other species of the genus. Moreover, the leaf margin is wavy and lumpy in the distal portion, and the hyaline awn is terete and sharply spinulose-denticulate; this is a rather exceptional type of hair-point in this genus. <i>Bucklandiella heterosticha</i> has a flattened and very broad awn, 1-stratose leaf margins, broadly canaliculate leaves, and symmetric, not winged costae; it is unlikely to be mistaken for <i>B. occidentalis</i>. Likewise, <i>B. affinis</i> has an awn similar to that in <i>B. heterosticha</i> and, additionally, it differs from <i>B. occidentalis</i> in its broader leaves, 1-stratose leaf margins, and entirely different costal anatomy. <i>Bucklandiella lawtoniae</i> shares with <i>B. occidentalis</i> wavy and lumpy leaf margins and sharply denticulate awns that, however, are flattened, not terete, and distinctly erect-recurved to squarrose. Moreover, it has completely 1-stratose leaf margins and symmetric, reniform costa in the proximal portion, and lacks a basal marginal border. <i>Bucklandiella sudetica</i> is much less robust than <i>B. occidentalis</i> and has smooth leaf margins, flat and less denticulate awns, and symmetric costa.</p>
|tables=
|references=
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-->{{#Taxon:
name=Bucklandiella occidentalis
|authority=(Renauld & Cardot) Bednarek-Ochyra & Ochyra
|rank=species
|parent rank=section
|synonyms=Racomitrium occidentale;Occidentale
|basionyms=Racomitrium heterostichum var. occidentale
|family=Grimmiaceae
|habitat=Dry or fairly moist acidic rocks, boulders and outcrops
|elevation=low to high elevations (0-1600 m)
|distribution=B.C.;Calif.;Oreg.;Wash.
|reference=None
|publication title=in R. Ochyra et al., Cens. Cat. Polish Mosses,
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_389.xml
|subfamily=Grimmiaceae subfam. Racomitrioideae
|genus=Bucklandiella
|section=Bucklandiella sect. Sudeticae
|species=Bucklandiella occidentalis
}}<!--

-->[[Category:Treatment]][[Category:Bucklandiella sect. Sudeticae]]