Bucklandiella sect. Lawtonia

(Bednarek-Ochyra) Bednarek-Ochyra & Ochyra in R. Ochyra et al.

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.
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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.

Distribution

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

Discussion

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

None.

"/3-1/2-3/4" is not declared as a valid unit of measurement for this property.

sometimes +  and short-hyaline-tipped +
hyaline +  and yellowish hyaline +
papillose +
long-piliferous +, crenulate +, obtuse +  and acute +
Ryszard Ochyra +  and Halina Bednarek-Ochyra +
(Bednarek-Ochyra) Bednarek-Ochyra & Ochyra in R. Ochyra et al. +
erect-recurved +  and squarrose +
both +  and papillose +
decurrent +, denticulate +  and flattened +
nodulose;oblate;quadrate;elongate +
thick-walled +  and nodulose-porose +
rectangular;linear +
divided +
Racomitrium sect. Lawtonia +
undifferentiated +
0 +  and 1/2 +
4-5-lobed +
small;large +
sulcate +  and smooth +
blackish brown +, castaneous +  and brown +
striate +  and smooth +
narrowed;obloid;narrowly cylindric +
undifferentiated +
subpercurrent +
papillose +  and smooth +
reniform +  and strongly flattened +
nw North America +, e Asia (China) +, e Asia (Japan) +, e Asia (Korea) +, e Asia (Russian Far East) +  and e Asia (Taiwan) +
sinuose-nodulose +
subquadrate +  and oblong +
sinuose +, multistratose +  and 1-stratose +
pseudopapillose +
thick-walled +  and sinuose +
dioicous +  and sexual +
curved +  and straight +
recurved +, spreading +  and erect +
lanceolate +
cristate +  and serrate +
extensive +
indistinct +
long-rostellate;conic-rostrate +
not +  and differentiated +
lanceolate;linear +
brown +  and reddish-brown +
2-fid +, lanceolate +  and triangular +
2 +  and 3 +
terete +  and filiform +
in R. Ochyra et al., Cens. Cat. Polish Mosses, +
arcuate +  and straight +
papillose +  and smooth +
short to long +
ornamented +  and smooth +
spheric +
unbranched +, simple +  and branched +
creeping +  and decumbent +
Dryptodon subg. Ellipticodryptodon +, Racomitrium sect. Ellipticodryptodon +, Racomitrium subg. Ellipticodryptodon +  and Racomitrium subg. Microcarpa +
Bucklandiella sect. Lawtonia +
Bucklandiella +
section +
compact +  and loose +
flexuose +  and straight +
thin +  and thick +
brownish;olivaceous;yellowish +