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LARGER MOUSE-TAIL MOSS

Isothecium myosuroides

Mosses Family [Brachytheciaceae]

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20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD
Grows more commonly on the lower trunks and roots of trees but can also grow on base-rich rocks. (Other shorter mosses are growing in the upper part of this photo).


20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD
It avoids the more acidic soils occupied by the similar Mouse-tail Moss (Isothecium myosoides) but that has leaves which end in concavely-curved point. (Bracken can be seen bottom right corner)


20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD
The shoots are 2-6cm long (much longer than those of Mouse-tail Moss)


20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD
Leaves are a distinctive pale-green or yellowish-green. The moss is very similar to Tufted Feather-moss (Scleropodium cespitans) which forms dense mats mostly with the shoots lain parallel to each other (as they are here...) and the shoots are mid-green to almost white (as they are here...) but the shoots of Tufted Feather-moss are only 1-2cm long (and not the 5cm as here), so these photos cannot be of that species, surely...?


20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD


20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD
Leaves may exceed 2mm in length (whereas those of Mouse-tail Moss are usually just 1 to 1.5mm long)


20th May 2013, Rocher End Brook, High Bradfield, Sheffield. Photo: © RWD
The leaves come to a fairly abrupt in with a monotonic curve, whereas the leaves of Mouse-tail Moss come to a longer sharper point via a change from positive curvature to negative curvature (acuminate). The moss also resembles Beech Feather-moss (Cirriphyllum crassinervium) but that has leaves with a concave surface indentation.


Not to be semantically confused with : Sterling Moss [a racing driver] nor with Black-grass (Alopecurus myosuroides) [a grass with similar botanical name]

Easily mistaken for : see captions


  Isothecium alopecuroides  ⇐ Global Aspect ⇒ Brachytheciaceae  

Distribution
 family8Mosses family8Brachytheciaceae

 BSBI maps
genus8Isothecium
Isothecium
(Tree-Mosses)

LARGER MOUSE-TAIL MOSS

Isothecium alopecuroides

Mosses Family [Brachytheciaceae]