identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
0B2FCA3578CC506989408E063D999603.text	0B2FCA3578CC506989408E063D999603.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Plagiothecium schofieldii G. J. Wolski & W. R. Buck 2021	<div><p>Plagiothecium schofieldii G.J.Wolski &amp; W.R.Buck sp. nov.</p> <p>Type.</p> <p>U.S.A. Alaska, Shumagin Islands, Simeonof Island, mainly near saddle between <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-159.25&amp;materialsCitation.latitude=54.916668" title="Search Plazi for locations around (long -159.25/lat 54.916668)">Hill</a> 1436 and 1265, wet cliff chimney, 54°55'N, 159°15'W, 19 July 1996, W.B. Schofield 106119, Holotype MO 5135779.</p> <p>Description.</p> <p>Plants small, light green to yellow, with a delicate metallic luster, forming very dense, often homogeneous mats. Stems erect, 1.5-3.0 cm long (Fig. 3), in cross-section rounded, with a diameter of 300-380 μm, the central strand developed, epidermal cells 10-25 × 6-12 μm, the parenchyma thin-walled, 20-40 × 15-32 μm; leaves julaceous, imbricate, very closely arranged on the stem, when dry not shrunken, very concave, therefore very often damaged under the microscope, symmetrical, ovate to elliptic, those from the middle of the stem 1.4-3.0 mm long, and the width measured at the widest point 0.9-1.9 mm; the apex obtuse and apiculate, often denticulate; costae two, thick and strong, extending usually to ½ of the leaf length, reaching 0.5-2.0 mm; laminal cells linear, rather symmetrical, in quite regular transverse rows, the length and width very variable but dependent on location: 66-178 × 14-33 μm at apex, 88-190 × 13-29 μm at midleaf, and 45-221 × 20-39 μm toward insertion, due to the very wide cells, cell areolation clearly loose; decurrencies of 4-5 rows of rounded, rounded-rectangular, inflated cells, 40-90 × 22-48 μm, forming distinct, quite long auricles, 300-750 μm long (Fig. 4). Autoicous. Sporophytes abundant; setae dark brown at base, yellowish-orange at apex, twisted when dry, 1.8-2.3 cm long; the capsules more or less erect, 700-950 × 280-350 μm; operculum short and rostellate; peristome double, well developed, 450-500 μm long; exostome teeth trabeculate at the ventral side.</p> <p>Etymology.</p> <p>The present species is named in honor of Wilfred “Wilf” Borden Schofield (1927-2008), who spent decades studying northern regions of North America, including the Aleutian Islands, and who on July 19, 1996, collected the specimen (No. 106119), chosen here as the holotype of Plagiothecium schofieldii. According to Stephen Talbot (pers. comm.), Schofield recognized this plant as distinct in the field.</p> <p>Distribution and ecology.</p> <p>Plagiothecium schofieldii so far has only been recorded from Adak Island, Attu Island and Simeonof Island in Alaska. In this area it has been recorded on wetlands and hills, wet cliff chimney, open, moist crevice of a cliff, shaded face of hole on slope, shaded humid outcrop, along creek and adjacent slope, near saddle between hills and near base of mountain.</p> <p>Additional specimens examined.</p> <p>U.S.A. Alaska: Adak Island, Finger Bay, along creek and adjacent slope, open, moist, crevice of cliff, 15-30 Jun 1975, D. K. Smith 3864 (NY02589541); <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-159.25&amp;materialsCitation.latitude=54.916668" title="Search Plazi for locations around (long -159.25/lat 54.916668)">Attu Island</a>, near <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-159.25&amp;materialsCitation.latitude=54.916668" title="Search Plazi for locations around (long -159.25/lat 54.916668)">Jaemin Pass</a>, slopes of <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-159.25&amp;materialsCitation.latitude=54.916668" title="Search Plazi for locations around (long -159.25/lat 54.916668)">Ribson Ridge</a>, shaded face of hole on slope, 52°53'N, 173°10' W, 10 Aug 2000, W. B. Schofield &amp; S. S. Talbot 115646, UBC ACC# B185126; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-159.25&amp;materialsCitation.latitude=54.916668" title="Search Plazi for locations around (long -159.25/lat 54.916668)">Shumagin Islands</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-159.25&amp;materialsCitation.latitude=54.916668" title="Search Plazi for locations around (long -159.25/lat 54.916668)">Simeonof Islands</a>, near base of larger mountain, N. side, 54°55'N, 159°15' W, shaded humid outcrop, 17 Jul 1995, W. B. Schofield, S. S. Talbot &amp; G. Argus 104056, ACC# B159650 (MO5140205); wetlands and Hill 624, 54°55'N, 159°15'W, seepy cliff chimney, 7 Jul 1996, W. B. Schofield 105769, ACC# B161483 (MO5148015).</p> </div>	https://treatment.plazi.org/id/0B2FCA3578CC506989408E063D999603	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Wolski, Grzegorz J.;Nowicka-Krawczyk, Paulina;Buck, William R.	Wolski, Grzegorz J., Nowicka-Krawczyk, Paulina, Buck, William R. (2021): Plagiothecium schofieldii, a new species from the Aleutian Islands (Alaska, USA). PhytoKeys 184: 127-138, DOI: http://dx.doi.org/10.3897/phytokeys.184.69970, URL: http://dx.doi.org/10.3897/phytokeys.184.69970
