Bucklandiella sect. Lawtonia
in R. Ochyra et al., Cens. Cat. Polish Mosses, 143. 2003 (as Lawtoniae),.
Plants fairly large to robust, coarse and rigid, yellowish, olivaceous or brownish in the upper part. Stems often more than 10 cm long. Leaves lanceolate; margins recurved on both sides to 1/3–1/2 (–3/4) of the leaf length, 1-stratose; long pilose, awns erect-recurved to squarrose, flattened, distantly sharply denticulate at the margins, distinctly decurrent; costa predominantly 3-stratose basally; alar cells undifferentiated; basal marginal border absent or present. Inner perichaetial leaves strongly modified, yellowish hyaline, chlorophyllose distally, sometimes with a short hyaline hairpoint. Capsule peristome teeth without a basal membrane.
nw North America, e Asia (China), e Asia (Japan), e Asia (Korea), e Asia (Russian Far East), e Asia (Taiwan)
Species 2 (1 in the flora).
The strongly modified innermost perichaetial bracts with thick-walled, chlorophyllose distal portion and sometimes also with a short hyaline hair-point, as well as not flexuose and distinctly erect-recurved to squarrose hyaline leaf hair-points are diagnostic for sect. Lawtonia. Apart from Bucklandiella lawtoniae, it contains only B. laeta, a closely related East Asian counterpart of the American species.
"/3-1/2-3/4" is not declared as a valid unit of measurement for this property.