Ic8 
REPORT ON YORKSHIRE BOTANY FOR 1880-91. 
CRYPTOGAMIA. 
M. B. SLATER, F.LS., 
Malton; Cryptogamic Secretary of the Botanical Section of the Yorkshire Naturalist's Union. 
NEW RECORDS, Erc., AND NOTES. 
1781. Ceterach officinarum Willd. Gathered by M. B. Slater 
on a wall in the village of Langton. There is a possibility 
of the plant having been introduced, but at any rate it is 
thoroughly naturalised. New record for East Riding. 
N.B.--From later information there is good evidence 
that the plants are truly native and not introduced. 
1811. Equisetum maximum Lam. var. serotinum A. Br. 
In Forge Valley, July 1889 (Nat. 1889, p. 16), 
Messrs. W. W. Reeves and M. B. Slater. New record 
for North Yorkshire. 
MUSCI. 
218. Grimmia torquata Hornsch. This moss, which is not 
uncommon in Britain, in Alpine situations, occurs on the 
Scars of Upper Teesdale, but always barren in Britain. It 
has, however, been recorded as fruiting in the mountains of 
Idaho, U.S.A., at an altitude of 6,000 feet, by Mr. J. M. 
Leiberg, March 1889 (Rev. Bryol., 1890, p. 16, and Nat., 
1890, p. 94). 
452. Thuidium recognitum Hedw. On grassy calcareous 
banks near Settrington (Slater), and also near Sledmere 
(G. Webster). It is recorded 1790 and 1820 as fruiting at 
Matlock Bath, and Yorkshire bryologists should look out for 
fruiting specimens in their own county. New record for 
South-East Yorkshire. 
57. Cylindrothecium concinnum DeNot. On the debris of 
an old lime quarry in Sleightholmdale, near Kirby Moorside, 
March 1890 (M. B. Slater), and again a small tuft in debris 
of a lime quarry near Welham, March 18go (Slater), on an 
extension of the calcareous ridge of the Howardian Hills, 
which have been cut through by the R. Derwent at Malton. 
Naturalist, 
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