Yorkshire Naturalists' Union: Annual Report, 1909. 63 



Weighton Mr. J. J. Marshall pointed out the best mosses. The 

 statement in " The Naturalist," at the top of p. 233 re D. undu- 

 lattim needs alteration : it should read " onh/ known station in 

 Yorkshire " : an addition to this district's list was Fissidens 

 viyididus var. Lylei Wils. 



At the Sedl)ergh meeting, Mr. W. Ingham found C ampylopus 

 atrovirens var. gracilis Dixon, this being new to the county. 



The Cawthorne excursion yielded only the usual coal measure 

 species; Aulacomnium androgynuni Schwseg, being the most 

 interesting. 



A welcome note on Ricciocarptis natans at Doncaster, from 

 Mr. W. West, appears in " The Naturalist." 



Some remarks by Dr. Smith, at Runswick, indicated how a 

 new phase in ecology might be developed by careful observation 

 of the grouping of mosses and their relation to their higher neigh- 

 bours and surroundings. In some measure this was attempted 

 in Mr. S. Margerison's paper on " The Vegetation of some Disused 

 Quarries " (reviewed in " The Naturalist " for October). 



If one or two meetings of our bryologists could be held, and 

 these matters discussed, much useful information might accrue. 

 The important work of bringing the West Yorks. hst up to 

 date has been undertaken by Mr. W. Ingham, and is now well on 

 its way to completion. When published, this will show the 

 present state of our knowledge of these plants, and with the 

 North Yorks. and East Yorks. lists, will form an up-to-date moss 

 flora of Yorkshire. 



Mr. J. J. Marshall, of Beverley, has found the following 

 interesting mosses and hepatics in the East Riding : — 

 *Mnium stellare in chalk pit at Skidby. 

 afjfine v. elatnm at Springwells. 

 Orthotrichtim pidchellum at Burton Bushes and *0. stramineum 



in Deepdale. 

 *Trichostoniiim nitidum at Thornwick Bay, abundant. 

 Physcomitrella patens at Bishop Burton. 

 Pottia bryoides near Pulfin. 



Ephemeriini serratuni between Cottingham and Beverley. 

 Fissidens exilis at Burton Bushes. 

 Phascum floerkianitm at Bishop Burton. 

 *Weisia viridida v. amblyodon near Market Weighton. 

 Tortula amhig'ua at Hornsea and T. mntica at Pulfin. 

 Hypnum glareosum at Goodmanham and H. caespitosiiin at Pulfin. 

 Acaulon muticum and *Pleiiridium axillare v. strictum, Canipy- 

 lopus atrovirens v. gracilis on Allerton Common, the same 

 plant that Mr. W. Ingham found on Skipwith Common, 

 these two habitats being the only ones known in Yorkshire 

 for the variety. 

 The above marked * are new to the East Riding. He has 

 also found the Hepatic *Ricciocarpiis natans var. terrestris at 

 Figham. 



1910 Jan. I. 



