Rhytidiadelphus japonicus
Hikobia 6: 19. 1971.
Plants to 7 cm, soft. Stems 3–5 mm wide across leafy stem, remotely and irregularly branched to irregularly 1 (or 2) -pinnate, branches to 1.5 cm. Stem-leaves widespreading to squarrose, not crowded, broadly ovate, not plicate or rugose, 2.1–3.8 × 1.6–3.2 mm; base scarcely sheathing, broadly rounded to insertion; apex abruptly narrowed, acumen short, channeled; costa 1/3–1/2 leaf length; alar cells vaguely distinct, slightly wider than basal-cells, walls thick, porose; medial laminal cells 25–55 × 4–7 µm, smooth. Branch leaves ovate, 1.5–2.8 × 0.7–2 mm. [Capsule oblong, 2.1 mm].
Habitat: Under tall forbs in coastal meadows of lower mountain slopes
Elevation: low elevations (0-30 m)
Discussion
Rhytidiadelphus japonicus is known from five or fewer localities in North America, all in the Aleutian Islands.
Selected References
None.
Lower Taxa
"nearly" is not a number. "single" is not a number."broad" is not a number.