View source for Bucklandiella

{{Treatment/ID
|accepted_name=Bucklandiella
|accepted_authority=Roivainen
|publications={{Treatment/Publication
|title=Ann. Bot. Fenn.
|place=9: 116. 1972,
}}
|basionyms={{Treatment/ID/Basionym
|name=Bucklandia
|authority=Roivainen
|publication_title=Suom. Elain-ja Kasvit. Seuran Van. Tiedon.
|publication_place=9: 98, figs. 1, 2. 1955
}}
|synonyms={{Treatment/ID/Synonym
|name=Dryptodon subg. Ellipticodryptodon
|authority=Vilhelm
}} {{Treatment/ID/Synonym
|name=Racomitrium sect. Ellipticodryptodon
|authority=(Vilhelm) Ochyra, Sérgio & Schumacker
}} {{Treatment/ID/Synonym
|name=Racomitrium subg. Ellipticodryptodon
|authority=(Vilhelm) Bednarek-Ochyra & Ochyra
}} {{Treatment/ID/Synonym
|name=Racomitrium subg. Microcarpa
|authority=Vilhelm
}}
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Racomitrioideae;Bucklandiella
|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>
|etymology=From Monte Buckland, mountain of Isla Grande de Tierra del Fuego, name commemorating William Buckland, 1784–1856, geologist, canon of Christ Church, Oxford, dean of Westminster from 1845, and Latin -ella, diminuntive
|volume=Volume 27
|mention_page=page 268, 272, 293
|treatment_page=page 267
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>small to large, in loose or compact tufts or forming extensive paches or mats, green, brown, yellowish, olive green, less often blackish brown or occasionally jet-black. <b>Stems</b> erect, decumbent or creeping, much dichotomously to irregularly, sometimes (sub-)pinnately branched, rarely almost simple and unbranched. <b>Leaves</b> lanceolate, oblong- or ovate-lanceolate, concave proximally, canaliculate to carinate distally; margins 1-stratose to variously multistratose, variously recurved to revolute on one or both sides, entire; apices acute or occasionally narrowly obtuse, entire or very seldom crenulate, long-piliferous to short-hyaline-tipped or sometimes epilose, if present, hyaline to yellowish hyaline, never papillose; costa single, percurrent, semi-terete in the distal and median parts, reniform to strongly flattened in the proximal portion, 2-to multistratose, with 2 to many enlarged, adaxial epidermal cells and small, substereid or stereid central and abaxial cells; laminal cells 1-stratose throughout or variously multistratose in the distal half, with moderately to strongly incrassate, sinuose to nodulose lateral walls, smooth or often pseudopapillose; basal laminal cells elongate, long-rectangular to linear; distal laminal cells quadrate, rounded-quadrate, oblate to rectangular. <b>Inner</b> perichaetial leaves not or strongly modified, often entirely hyaline to yellowish hyaline. <b>Seta</b> 1–3 per perichaetium, erect, twisted clockwise distally, smooth. <b>Capsule</b> brown, castaneous or blackish brown, straight, symmetric, ovoid, ellipsoid, obloid to narrowly cylindric, narrowed at the mouth, without or with an indistinct neck; exothecial cells variable in size and shape, subquadrate to oblong, with thin to thick, straight or flexuose walls; annulus compound, abruptly or tardily deciduous, 2–4-seriate; operculum straight or slanted, conic-rostrate or long-rostellate; peristome teeth lanceolate to triangular, reddish brown or brown, cleft into 2–3 filiform, terete prongs in the distal half, occasionally 2-fid nearly to the base. <b>Calyptra</b> 4–5-lobed at the base, naked. <b>Spores</b> spheric, finely granular to coarsely papillose.</span><!--

-->{{Treatment/Body
|distribution=North America;Central America;South America;Eurasia;Africa;Atlantic Islands;Pacific Islands;Australia;Antarctica.
|discussion=<p>Species ca. 50 (12 in the flora).</p><!--
--><p><i>Bucklandiella</i> is the largest and taxonomically most difficult segregate of a broadly conceived <i>Racomitrium</i>. It is a clearly defined and easily recognized taxon that, in contrast to the other three segregates of <i>Racomitrium</i>, comprises taxa with smooth laminal cells. There may be pseudopapillae, due to numerous longitudinal cuticular ridges that make the leaf surface rugged and appear papillose in transverse-section. The smooth laminal cells are coupled with relatively short, lanceolate or triangular peristome teeth, which are irregularly divided in the distal half into 2–3 or occasionally 4 branches, which however, are sometimes only irregularly perforated along the median line. In some cases the teeth remain undivided. Additionally, the following combination of characters is typical of this genus: narrowly lanceolate to ovate-triangular leaves; unbranched, percurrent costa; awns, if present, smooth, denticulate, or spinulose but never papillose; leaf margins 1–2(–4)-stratose in one to several cell rows; and seta always smooth, twisted to the right when dry.</p>
|tables=
|references={{Treatment/Reference
|id=frisvoll1988a
|text=Frisvoll, A. A. 1988. A taxonomic revision of the Racomitrium heterostichum group (Bryophyta, Grimmiaceae) in N. and C. America, N. Africa, Europe and Asia. Gunneria 59.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves noticeably spiral-ranked around the stem when dry; perichaetia and sporophyte unknown
|[[Bucklandiella sect. Marginatae|Bucklandiella sect. Marginatae]]
|-id=key-0-1
|1
|Leaves never spiral-ranked when dry; perichaetia and sporophyte known
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Innermost perichaetial leaves similar to the vegetative leaves, moderately sheathing proximally, chlorophyllose, acuminate and piliferous distally; leaf awn erect-recurved to squarrose, not flexuose when dry
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Innermost perichaetial leaves not similar to the vegetative leaves, sheathing, obtuse, not or shortly apiculate, occasionally with a short awn but then the basal leaf cells with incrassate, porose and nodulose lateral walls; leaf awn erect, usually strongly flexuose when dry
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Large, yellow-olivaceous plants usually with a long awn, awn long-decurrent
|[[Bucklandiella sect. Lawtonia|Bucklandiella sect. Lawtonia]]
|-id=key-0-3
|3
|Smaller, greenish or brownish plants with a short awn, awn not or only slightly decurrent
|[[Bucklandiella sect. Sudeticae|Bucklandiella sect. Sudeticae]]
|-id=key-0-4
|4
|Innermost perichaetial leaves hyaline proximally, fairly large, chlorophyllose distally with an areolation of cells with strongly incrassate walls; basal leaf cells not sinuose, with nodulose, porose and strongly incrassate walls.
|[[Bucklandiella sect. Marginatae|Bucklandiella sect. Marginatae]]
|-id=key-0-4
|4
|Innermost perichaetial leaves hyaline or yellowish hyaline throughout, often fairly small; basal leaf cells sinuose.
|[[Bucklandiella sect. Laevifoliae|Bucklandiella sect. Laevifoliae]]
|}
</div></div><!--

-->{{#Taxon:
name=Bucklandiella
|author=Ryszard Ochyra;Halina Bednarek-Ochyra
|authority=Roivainen
|rank=genus
|parent rank=subfamily
|synonyms=Dryptodon subg. Ellipticodryptodon;Racomitrium sect. Ellipticodryptodon;Racomitrium subg. Ellipticodryptodon;Racomitrium subg. Microcarpa
|basionyms=Bucklandia
|family=Grimmiaceae
|distribution=North America;Central America;South America;Eurasia;Africa;Atlantic Islands;Pacific Islands;Australia;Antarctica.
|reference=frisvoll1988a
|publication title=Ann. Bot. Fenn.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V27/V27_372.xml
|subfamily=Grimmiaceae subfam. Racomitrioideae
|genus=Bucklandiella
}}<!--

-->[[Category:Treatment]][[Category:Grimmiaceae subfam. Racomitrioideae]]