Bucklandiella macounii subsp. macounii

Treatment appears in FNA Volume 27. Treatment on page 282. Mentioned on page 283.

Plants fairly large to robust, olivaceous or brown at the apices, reddish-brown to blackish proximally, dull, occasionally more greenish. Leaves contorted, (2–) 2.3–2.8 (–3) × 0.5–0.8 mm; muticous or awn short, to 0.1 mm, strongly spinulose, erect and occasionally somewhat recurved; costa 80–100 (–150) µm wide near the base, 45–70 µm wide distally; basal marginal border composed of 15–40 short, pellucid, not or moderately sinuose cells; medial and distal laminal cells oblate, quadrate to short-rectangular, 5–12 × 8–9 µm, moderately or seldom more prominently pseudopapillose. Capsule obloid-cylindric, 1.7–1.9 × 0.6–0.8 mm; peristome teeth to 330 µm.


Habitat: Hydrophilous, acidic rocks and stones in streams and waterfalls, vertical bluffs wet by irrigated water, rock slabs wet from snowmelt, wet montane tundra-like barrens, sometimes sandy loam
Elevation: moderate to high elevations (500-3500 m)

Distribution

V27 387-distribution-map.gif

B.C., Alaska, Calif., Colo., Idaho, Mont., Oreg., Wash., Wyo., Europe, Atlantic Islands (Iceland)

Discussion

Subspecies macounii is a montane moss occurring in western North America in the coastal region from Vancouver Island to northern California, and in the Rocky Mountains from southern Alaska to Colorado. The taxon is readily recognized by its characteristic habit including fairly robust, dull, distally more olivaceous plants with distinctly crisped leaves. Moreover, the awns are usually absent or very short, less than 0.1 mm, and strongly spinulose, the costa is very robust and broad, 80–100, sometimes to 150 µm wide near the base, the capsule is obloid to short-cylindric, 1.7–1.9 mm, and the peristome teeth are very short, about 330 µm.

Selected References

None.

Lower Taxa

None.
sometimes +  and short-hyaline-tipped +
hyaline +  and yellowish hyaline +
papillose +
Ryszard Ochyra +  and Halina Bednarek-Ochyra +
(Kindberg in Macoun) Bednarek-Ochyra & Ochyra in R. Ochyra et al. +
yellowish hyaline +  and reddish +
flexuose +
recurved +  and erect +
both +  and papillose +
not decurrent +  and terete +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
nodulose;oblate;quadrate;elongate +
thick-walled +  and nodulose-porose +
rectangular;linear +
divided +
45um +  and 70um +
Racomitrium brevipes +
undifferentiated +
0 +  and 1/2 +
4-5-lobed +
small;large +
sulcate +  and smooth +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
striate +  and smooth +
obloid-cylindric +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (?) +  and 0.08 cm0.8 mm <br />8.0e-4 m <br /> (?) +
undifferentiated +
15 (?) +  and 40 (?) +
1 (?) +  and 3 (?) +
(2-)3-4-stratose;3-4-stratose;(3-)4(-5)-stratose;percurrent +
subpercurrent +
papillose +  and smooth +
rounded +  and elliptical +
80um +  and 100um +
B.C. +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Oreg. +, Wash. +, Wyo. +, Europe +  and Atlantic Islands (Iceland) +
moderate to high elevations (500-3500 m) +
sinuose-nodulose +
subquadrate +  and oblong +
Hydrophilous, acidic rocks and stones in streams and waterfalls, vertical bluffs wet by irrigated water, rock slabs wet from snowmelt, wet montane tundra-like barrens, sometimes sandy loam +
papillose +  and smooth +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
thick-walled +  and sinuose +
dioicous +  and sexual +
straight +
2.3mm;2.8mm +
muticous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
2-stratose;2(-4)-stratose +
1/2 +  and 2/3 +
extensive +
indistinct +
convex-conical;shortly rostrate +
not +  and differentiated +
lanceolate;linear +
orangebrown +  and reddish +
papillose +  and spiculate +
attenuate +
1 +  and 3 +
terete +  and filiform +
in R. Ochyra et al., Cens. Cat. Polish Mosses +
arcuate +  and straight +
papillose +  and smooth +
short to long +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0 +  and 1/2-3/4 +
undivided +  and perforated +
ornamented +  and smooth +
spheric +
branched +  and simple +
creeping +  and decumbent +
1cm;13cm +
ascending +  and erect or prostrate +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Racomitrium heterostichum var. macounii +  and Racomitrium robustifolium +
Bucklandiella macounii subsp. macounii +
Bucklandiella macounii +
subspecies +
compact +  and loose +
flexuose +  and straight +
sinuose-nodulose +
greenish;reddish-brown;blackish +