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.

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 +
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 +
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 +