Andreaea rothii
Andreaea sinuosa
dusky rock-moss, dusky rock-turf, Roth's andreaea moss
andreaea moss, small-spore rock-moss, small-spore rock-turf
erect-spreading, occasionally secund, broadly subulate from an ovate base, widest in proximal half of leaf, apex symmetric;
costa present, percurrent and usually filling the leaf apices, moderately differentiated to strong, terete, reaching the leaf insertion;
leaf margins entire or occasionally weakly crenulate;
basal laminal cells quadrate to occasionally short-rectangular, marginal cells mostly quadrate or rounded, walls usually sinuose;
medial laminal cells quadrate, 1-stratose to nearly completely 2-stratose, lumens rounded-quadrate;
laminal papillae rare, low.
weakly spreading, straight or sometimes secund, narrowly lanceolate, widest proximally, apex symmetric;
costa absent;
leaf margins entire;
basal laminal cells rectangular, marginal cells not different in shape, walls thickened, pitted, sinuose;
medial laminal cells rounded-quadrate to ovate, 1-stratose entirely or sometimes 2-stratose in patches distally, lumens rounded;
laminal papillae low, large, brown to whitish, mainly medial.
clad- or gonioautoicous;
perichaetial leaves differentiated, convolute-sheathing.
apparently dioicous, possibly cladautoicous;
perichaetial leaves differentiated, convolute-sheathing.
35–60(–70) µm.
12–20 µm.
Andreaea rothii
Andreaea sinuosa
H. A. Crum and L. E. Anderson (1981) did not recognize as Andreaea crassinervia those eastern North American specimens otherwise referable to A. rothii with excurrent or poorly defined costae (not bordered by laminal cells in the subula). B. M. Murray (1987) excluded A. crassinervia from the Arctic, while M. F. V. Corley et al. (1981) submerged it in A. rothii. The essentially European A. rothii var. falcata (Schimper) Lindberg (A. rothii var. papillosa Müller Hal.) is only poorly distinguished from the typical variety and does not warrant recognition here, at least on the basis of the single specimen reported for the flora area. The previously used traits of spore size and costa filling the acumen or not intergrade between those taxa.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Andreaea sinuosa is uncommon, and is distinguished from the similar A. rupestris by the symmetric and often rounded leaf apex and sinuose basal laminal cells.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
CalFlora
Flora NW
MD Biodiversity
MI Flora
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
