View source for Bucklandiella afoninae

{{Treatment/ID
|accepted_name=Bucklandiella afoninae
|accepted_authority=(Frisvoll) Bednarek-Ochyra & Ochyra in R. Ochyra et al.
|publications={{Treatment/Publication
|title=in R. Ochyra et al., Cens. Cat. Polish Mosses,
|place=144. 2003,
}}
|basionyms={{Treatment/ID/Basionym
|name=Racomitrium afoninae
|authority=Frisvoll
|rank=species
|publication_title=J. Bryol.
|publication_place=15: 275, figs. 1, 2. 1988
}}
|synonyms=
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Racomitrioideae;Bucklandiella;Bucklandiella sect. Marginatae;Bucklandiella afoninae
|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. Marginatae]]</div><div class="higher-taxon"><small>species</small>[[Bucklandiella afoninae]]</div></div>
|volume=Volume 27
|mention_page=page 269, 271
|treatment_page=page 272
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>fairly large, rather coarse, densely caespitose, olive green distally, brownish or blackish proximally. <b>Stems</b> erect-ascending, 2–5 cm, moderately, irregularly branched. <b>Leaves</b> loosely appressed, spirally twisted around the stem or somewhat contorted when dry, erect-spreading when moist, lanceolate, (2–)2.3–2.7(–2.9) × 0.5–0.6 mm, muticous or with a short, to 0.4 mm, hyaline, bluntly denticulate to crenulate hair-point; margins broadly recurved to mid-leaf or 3/4 way up the leaf on one side, plane or narrowly recurved in the broadest part on the other side, variously 1–2-stratose in 1 cell row distally; costa percurrent, 80–90 µm wide basally, 55–75 µm wide distally, strongly convex on the abaxial side, 3-stratose in the base with 4(–5) enlarged adaxial cells, 3–4-stratose in the middle with 3–4 large adaxial cells and 2–3-stratose distally with 2 adaxial cells; laminal cells 1-stratose with occasional 2-stratose patched near the apex, smooth or slightly pseudopapillose; distal and median cells rectangular, 25–50 × 10–12 µm, strongly sinuose-nodulose and thick-walled; basal cells long-rectangular to linear, 50–90 × 10–12 µm, with strongly porose and incrassate lateral walls, to 7 µm thick; alar cells undifferentiated; basal marginal cells esinuose, moderately thick-walled, long-rectangular to linear, 50–100 × 5–8 µm, hyaline, forming a transparent border extending to the broadest part of the leaf. <b>Sterile</b>.</span><!--

-->{{Treatment/Body
|habitat=Rocky ground in tundra
|distribution=Alaska;n Asia (Chukotka).
|discussion=<p>Of conservation concern.</p><!--
--><p><i>Bucklandiella afoninae</i> is the rarest species of the genus, known in the flora area only from a single site from western Alaska (Seaward Peninsula), which corresponds to several localities of the species in Chukotka in arctic Russia. Although it is known only in the barren state, it fits well into the concept of sect. Marginatae on account of its linear basal cells with strongly incrassate and porose longitudinal walls, and the presence of a distinct basal marginal border that is composed of exceptionally long, mostly linear cells. Such leaf border is unknown in any other species of the genus in the flora area. The other exceptional character of this species is spirally twisted leaves, and such leaf arrangement is known only in two austral species of <i>Bucklandiella</i>, B. emersa and B. rupestris.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Bucklandiella afoninae
|authority=(Frisvoll) Bednarek-Ochyra & Ochyra in R. Ochyra et al.
|rank=species
|parent rank=section
|synonyms=
|basionyms=Racomitrium afoninae
|family=Grimmiaceae
|habitat=Rocky ground in tundra
|distribution=Alaska;n Asia (Chukotka).
|reference=None
|publication title=in R. Ochyra et al., Cens. Cat. Polish Mosses,
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V27/V27_375.xml
|subfamily=Grimmiaceae subfam. Racomitrioideae
|genus=Bucklandiella
|section=Bucklandiella sect. Marginatae
|species=Bucklandiella afoninae
}}<!--

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