34 G OUTHOTRICHA FOUND IN AYRSHTRE. 
In submitting this list I gladly express my obligations to Mr. 
Wilson and Dr. Scbimper, and especially to Dr. AVood, who, when I 
commenced to Avork in the district, spared neither time nor trouble to 
introduce me to the genus. It might be said in all fairness that 
Dr. Wood lias done more for the Ortltotrkha in Britain than any other 
British bryologlst. 
It will be observed that 0. oitiisJ/oVium, 0, speciosum^ U. Ludwigiiy 
and U, IlutcJdnsii have not been detected in Dailly. 0. ohtnsifolhim 
may be expected to turn up ; the others are subalpine forms. 
0. cupulalnm, var, riparinm ; this takes the place of 0. rivulare 
in the feeders of the Girvan, and does not occur elsewhere in the 
district. 
0, pumihm was detected here for the first time by Dr, Schimper. 
I had gathered the moss often, but could make nothing of it. 
0, Sturmii was first noticed as British by Dr. Wood in a collection 
sent to him by Dr. Moore, of Glasnevin. In 1860 I collected it 
both here and on Ailsa Craig. Subsequently it has been gathered in 
Scotland in different places by Mr. M'Kinlay, Mr. Howie, and myself. 
It seems to be confined to trappcan rocks. I have gathered it in 
company with 0. anomaluni and 0. rvpestre^ near Bowling. 
0. Rofjeri I first gathered near Douglas, Lanarkshire, on Elder- 
trees, in May, 1861, and sent it as such to Mr. Wdson, who thought it 
but a form of 0. affine^ the general scapegoat of more than one Ortlio- 
tricliam difficulty. I gathered it again, when Dr. Schimper visited 
Dailly, and he unhesitatingly pronounced it 0. RogerL 
0. Shaio'd is confined to one Ash-tree 
# 
when under the influence of great moisture. Dr. Schimper pronounced 
it 0. patens, 
0. fastigiaiiim. Dr. Schimper has determined that this is truly 
a British species. The only two British capsules under that 
name 
# 
probably O.fastigiatinn! O.fadigiatnm ripens earlier, has a shorter 
and rounder capsule, and is devoid of that greenish aspect of capsule 
peculiar to 0. affine. 
Ulota calvescens is excessively rare here and near Loch Doon, where 
I have also gathered it. 
Those who favour the Dai'winian hypothesis will remark that some 
