at Conisboroiigh and Doncaster. 



123 



stone, and Hylocomiiim sqitarrosum B.&S. Mr. Dixon calls the 

 barren H. cuspidatiuu above a very fine growth. 



On the same side of the Don, near Marr, is a quarry rich in 

 good mosses, as the following- will show : — Ditrichum flexicaule 

 var. densum Braithw., usually a mountain plant, is here well 

 established, and the tufts have the strange habit in the autumn 

 of detaching- themselves from the substratum and lying loose on 

 the surface, a habit this has in common with Weisia tortilis CM., 

 which occurs in the Jackdaw Crag Quarry, Tadcaster; Pottia 

 truncatula Lindb., P. Janceolata CM., Tortilla ambigua Ang'str. , 

 Weisia viridula Hedw., Barbuia fallax Hedw., B. jallax var. 

 brevifolia Schultz (in fruit, a rare moss and also rare in fruit), 

 B. convoluta Hedw. (in abundant fruit), B. imguiculata Hedw., 

 Encalypta streptocarpa Hedw., Thuidium recognitum Lindb. (a 

 rare and beautiful moss on banks in the quarry),- B rachytheoium 

 rutabulum B.&S., B. glareosum B.&S., Eurhynchium prcelongmn 

 approaching var. Stokesii, E. Swartzii Hobk. (a light delicate 

 brown colour), E. striatum B.&S., Amblystegium serpens B.&S. 

 (a very slender form with delicate julaceous, silky stems), 

 A. jilicinum DeNot., Hypnum riparium L., H. chrysophylhim 

 var. erectum Bagnall (the fourth habitat for this moss, the others 

 being Dovedale, Derbyshire by Bagnall, Wharfedale by Cocks, 

 Ireshope Burn, Durham by myself), H. stellatiun Schreb., H. 

 stellatum var. protensum B.&S., a large form of H. cupressiforme 

 L., II. mollusciim Hedw. (very fine on rocks by roadside from 

 Marr to Doncaster), H. euspidatum L. 



Several of the above mosses are new records for Vice-county 

 63, in which the river Don is situated. 



For the Fungi Mr. Thomas Gibbs reported as. follows : — 

 Notwithstanding that, in order to carry out the day's pro- 

 gramme, the pace had to be much faster than is suitable for 

 thorough mycological survey, the day's work resulted in a 

 substantial addition to the finds of the previous days of the 

 foray. 



Conisboroiigh Castle, which the party visited immediately 

 upon their arrival, does not look a promising" hunting-ground 

 for the mycologist, but a close search in some damp spots on 

 the site of the ancient moat resulted in the finding of several 

 small Discomycetes upon dead twigs and leaves. One of these, 

 a minute species which occurred in some quantity upon dead 

 oak leaves, has since been pronounced by Mr. G. Massee, 

 F. L.S., to be Helotium tumidulum Rehm, a species not 

 previously recorded as British. Others noticed about the same 



1902 April 1. 



