3°7 
contain a mixture in which a sterile form of Cercitodon j.mrpureus 
predominates.” W.E.N. 
Pottia crinita Wils., Barmouth (48), Dec. 08, D.A.J. 
Pottia vividifolicb Mitt., Cliffs, Boscastle, E. Cornwall (2), Jan. /92 
and Jan. /09, W.B.W. “ The plant gathered in January 1909 is, I 
should say, good viridifolia, with the shortly pointed leaves of a deep 
green colour characteristic of this species. The plant gathered in 
1892 is, however, different and the leaves have generally the longly 
excurrent nerve of P. crinita. Mixed with these are a few stems of 
a form with shorter pointed leaves tending to connect the plant with 
'viridifolia. I have before had occasion to point out the close 
relationship between P. crinita and P. viridifolia, and as these plants 
come from the same locality, it is possible that the moisture or 
drought of a single season might have a marked effect in modifying 
the form assumed. 
The single specimen sent by Mr. D. A. Jones, from Barmouth, 
Dec. /08, as P. crinita, belongs to the form of this species with very 
short points to the leaves, and might with equal justice be referred 
to P. viridifolia.” W.E.N. 
Pottia commutcita Limpr., moist ground near the sea, Newhaven, 
Sussex (14), Feb. /08, W.E.N. 
Tortula lamellatci Lindb., Mud cap of wall, Ivingsthorpe, North¬ 
ampton (32), Feb. 89, H.N.D. 
Tortilla brevirostris Hook. & Grev., on earth, Abisko, Swedish 
Lapland, lat, 68° 20' N., Aug. /07, leg. Nicholson & Dixon, Comm. 
H.N.D. 
Tortilla ritjida Schrad., Sheepscombe, E. Gloster (33), Oct. /08, 
H.H.K. 
O 
Tortulci ambigua Angstr., Snape, Suffolk (25), Oct. /08, C.A.C. 
“ This plant is probably referred rightly to ambigua, though being 
without fruit the determination must remain a little doubtful, and 
the plants are not good herbarium specimens.” W.E.N. ; also 
Bruton, N. Somerset (6), Mar. /07, and Taunton, S. Somerset (5 :;: ), 
Feb. /08, W.W. 
Tortula muralis Hedw. var. aestiva Brid., Hartlebury, Worcs. (37), 
Oct. /08, J.B.D. 
Tortula cancscens Mont., Barmouth (48), Feb. /05, D.A.J. 
Tortula laevipilci Schwaeg. var. lacvipilacformis Limpr., on Elder, 
Beckhampton, Wilts. July /07, H.N.D. 
Tortulapapillosa Wils., on Elm, Laverton, E. Gloster (33), Dec. /08 
H.H.K. 
