NOTES ON MOSSES. 199 
A much less robust species is G. ¢richophylla, the hair-pointed 
Grimmia, also fruiting in April and May. This is found on stone 
walls and the inflorescence is dioicous. Stems 1—1 in. long, 
rooting at the base only. ‘The leaves are linear-lanceolate, spread- 
ing from an erect base, and distinguished from G. pulvinata by 
their gradually tapering character and lax tufts. 
In G. torguata, the twisted-leaved Grimmia, no flowers and 
consequently no fruit have been observed at any time; but jointed 
filaments, adhering to the back ofa leaf, are frequently found among 
the leaves near the top of the stem. It is found only on alpine 
rocks in doosely forked tufts, one to two inches high. Leaves 
lanceolate-acuminate, spirally twisted when dry, channeled and 
occasionally hair-pointed. 
Three very rare species are G. Miihlenbeckit ; G. leucophea, the 
hoary Grimmia ; and G. wnzcolor, the dingy Grimmia. 
Close allies of the Grimmias, but with stems long and branching, 
are the Racomitriums or Fringe Mosses, so named from the lacerated 
base of the calyptra. &. patens, the tall alpine Fringe Moss, 1s 
found on moist alpine rocks in April and May, with branching 
stems two to four inches long. Leaves oblong-lanceolate, gradually 
tapering to a blunt apex; nerve strong and two-winged at back ; 
this mark distinguishing the species, even when in a barren state ; 
capsule obovate, furrowed when dry, on a pale curved fruitstalk ; 
lid with a long beak and calyptra five-lobed at base. Dioicous. 
R. protensum, the narrow-leaved Fringe Moss, grows in extensive 
light green patches on moist rocks by alpine rivulets, and fruits in 
April; as also the slender mountain Fringe Moss A. sudeticum, 
which is seen in loose grey patches on exposed alpine rocks. 
Fruiting in June and July, on rocks near the sea, and in the 
Pass of Llanberis, &c., is Glyphomitrium Davisit, Davis’ Veil Moss. 
Growing in dense dark-green tufts in crevices, its diminutive size 
renders it liable to escape observation, the stems being only % in. 
long and sub-divided. Leaves linear-lanceolate entire, margin 
thickened and reflexed below, strongly nerved to apex; areolz 
minute ; capsules erect, globose, with a reddish mouth and long 
rostrate lid ; calyptra large, laciniate at base. 
Of the Orthotricha, or Bristle Mosses, seven species are very 
rare and not likely to be met with by those only just commencing 
the study of Mosses, viz.: Ulota calvescens, O. Shawit, O. obtust- 
Jolium, O. pumilum, O. pallens, and O. anomalum. 
O. tenellum, the slender-fruited Bristle Moss, is one of the most 
beautiful of the species, and is easily recognized by the narrow, 
elongated, golden brown capsules, which are strongly ribbed when 
dry, and by the narrow, glossy, yellow calyptras. Fruiting on trees 
in May and June, its stems are short and tufted ; leaves lanceolate- 
oblong or ligulate ; obtuse and pale green. 
