HERTFORDSHIRE NATURAL HISTORY SOCIETY. 
lxiii 
flower. It is only known to occur elsewhere in Hertfordshire in a 
very few localities in the Ouse river-basin on the extreme north of 
the county. 
From the hill above Tring Station the wood called Aldbury 
Owers was entered, and in and about here were found the mosses 
Weissia microstoma , JEncalypta streptocarpa , Fissidens calcar eus, 
Hypnum molluscum , and H. polymorphum , new to Hertfordshire. 
The Aldbury valley or coomb in the Chalk was then crossed and 
Moneybury Hill ascended. Here Funaria fascicularis and Sclero- 
podium illecebrum were detected, and in a pond near the Column, 
Fottia intermedia. Luncheon was now partaken of, and the walk 
was then continued through Sallow Copse to Eingsall, and 
from there for a considerable distance through Ashridge Park, this 
part of the walk being in Buckinghamshire. On re-entering Hert¬ 
fordshire, Archidium alternifolium, Thuidium recognitum, and 
Cylindrothecium concinnum were found in Ashridge Park; and, in the 
Avenue, on the wall dividing the park from Moneybury Common, 
Barbula insulana. Continuing along the Avenue, Aldbury was soon 
reached, and here Barbula marginata was seen on damp bricks form¬ 
ing the side of a drain, and Bryum murale on a new wall. After 
having tea in Aldbury, the party walked back to Tring Station. 
The following is a complete list, contributed by Mr. Holmes, of 
the mosses collected by the members and identified by Dr. Braith- 
waite and himself, only the species new to the county since 
the publication by Mr. A. E. Gibbs of a “Preliminary Hertfordshire 
Moss-flora” having been enumerated above. To these an asterisk is 
affixed. 
Acrocarpe. 
Weissia microstoma , Hedw.* 
,, cirrhata, Hedw. 
Dicranum scoparium, L. 
,, palustre, Bry. Brit. 
Tleuridium subulatum, L. 
,, alternifolium , B. and S.* 
Fottia truncata , L. 
,, intermedia , Turn.* 
Didymodon rubellus , B. and S. 
Ditrichum flexicaule , Sckwg. 
Barbula marginata, B. and S.* 
,, muralis, L. 
,, fallax, Hedw. 
,, insulana , Be Hot.* 
,, revoluta, Schwg. 
,, convoluta, Hedw. 
,, ruralis, L. 
Ceratodon purpureus , L. 
Encalypta streptocarpa , Hedw.* 
Grimmia apocarpa , L. 
,, pulvinata , Dill. 
Orthotrichum diaphanum , Schrad. 
,, leiocnrpum, B. and S. 
Funaria fascicularis, Dicks.* 
Webera nutans, Schreb. 
Bryum murale , Wils.* 
,, ccespiticium, L. 
Bryum argenteum, L. 
,, capillare, L. 
Mnium undulatum , Hedw. 
,, rostratum, Scbrad. 
,, hornum , L. 
A trie hum undulatum , L. 
Folygonatum nanum, Neck. 
Fissidens calcareus, Nutt.* 
,, taxifolius, L. 
Pleurocarpi. 
Leucodon sciuroides , L. 
Necktra pumila, Hedw. 
,, complanata, L. 
Anomodon viticulosus , L. 
Thuidium tamariscinum, Hedw. 
,, recognitum, Hedw.* 
Cylindrothecium concinnum, De Not.* 
Isoihecium myurum, Poll. 
Homalothecium sericeum , L. 
Camptothecium lutescens , Huds. 
Scleropodium illecebrum , Schwg. 
Brachythecium albicans , Neck. 
,, velutinum, L. 
,, rutabulum , L. 
Furhynchium striatum , Schreb. 
,, crassinervium , Tayl. 
,, piliferum , Schreb. 
,, Swartzii, Turn. 
