Bucklandiella sect. Lawtonia

(Bednarek-Ochyra) Bednarek-Ochyra & Ochyra

in R. Ochyra et al., Cens. Cat. Polish Mosses, 143. 2003 (as Lawtoniae),.

Basionym: Racomitrium sect. Lawtonia Bednarek-Ochyra Fragm. Florist. Geobot. Ser. Polon. 2: 65. 1995
Treatment appears in FNA Volume 27. Treatment on page 278. Mentioned on page 268, 279.

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 hair-point. Capsule peristome teeth without a basal membrane.


nw North America, e Asia (China, Japan, Korea, Russian Far East, 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.

Selected References


Ryszard Ochyra +  and Halina Bednarek-Ochyra +
(Bednarek-Ochyra) Bednarek-Ochyra & Ochyra +
Racomitrium sect. Lawtonia +
nw North America +, e Asia (China +, Japan +, Korea +, Russian Far East +  and Taiwan). +
in R. Ochyra et al., Cens. Cat. Polish Mosses, +
Dryptodon subg. Ellipticodryptodon +, Racomitrium sect. Ellipticodryptodon +, Racomitrium subg. Ellipticodryptodon +  and Racomitrium subg. Microcarpa +
Bucklandiella sect. Lawtonia +
Bucklandiella +
section +