ORTHOTRICH.V rOL'NB IN AYKSHlRE. 345 
runs to tlie south-west. It contains the river Girvan, a somewhat hn-msh 
jind leisurely stream. Around the village of Dailly the country is 
peculiarly well-wooded. The moisture of Ihe atmosphere is remark- 
able; on evenings, in summer, the ground is reeking with vapour; 
hence the cause of the excellence of the district as a moss region. 
It is especially rich in OrtltotrkJta, As these Mosses grow for the 
greater part on trees, without continued supplies of moisture they 
could not flourish. Dry districts are absolutely destitute of them; 
for, although their capabilities for containing moisture are marv^cllons, 
they do not retain it long- 
The following table will give the main facts in regard to tbe diffe- 
rent species in a succinct form, the numbers representing the compara- 
tive rarity of the' species ; 
OrthotricJmm leiocarpum, February. 50, On trees isolated and in woods. 
O. diaj?hanum. February and March, Trees and old walls. 30. Preferring 
isolated trees. 
O. pulchellmn. April. Trees, rarely rocks. 40, On aslies and elders in woods ; 
more rarely on isolated trees, 
O. saxati/e. May, Limestone rocks. 20. 
O. ctipulatum^ var. ripanum. May. Rocks in streamlets. 70. The type not 
fomid in Dailly, 
O. pnmilum. May. Old trees. 10, Chiefly on isolated trees — Limes. 
O, SturmiL May. Eocks. 1. On trappean rocks- 
O. rupesire. May. Ash*tree. 2. I^ot found on rocks and walls in Dailly. 
0, Rogeri (pollens). May. Elders. 10. Form with pointed leaf, 
O, stramineum. June. Trees. 40. On isolated trees mainly, 
O. tenellum. June. Trees. 30. On isolated trees ; lower parts, 
0. Skawii. June. Ash-tree. 10. Observed only on one tree, 
O. Spriicei. June. Willows, etc. 40. On parts often inundated by river* 
0. rividare, June. Trees and rocks. 30. On parts often inundated by river. 
0. patens. June. Trees. 10. By the banks of the river. 
O.fastigiatmn. June. Trees, 30. Isolated and in woods. 
O. affine. July. Trees and stones. 30, 
O. Li/elUL July. Old trees, 5. The barren plant plentiful. 
Ulota calvescens. July. Trees. 5. Trees in shady woods. 
U. crupula. July. Trees. 5, Trees in woods. 
U. crispiila^ var. amhigua, July. Trees. 40. Trees in woods. 
U. crispa. End of Jidy. Trees. 20. Trees in woods. 
U. Brtcckii. September. Trees. VO. Trees. 
U. DrummondiL September. Trees. 5. Exposed woods. 
U. phi/llanfha. Trees and rocks, 100. Everywhere. 
VOL, III. ("nOVEMBEH I, lFi65.] 2 A 
