157 
3. D. AQCATICUS,* 
(“ Tricli. aquaticum, Brid.? fide Wilson" — Spruce, PJiyt. ii. 155 ). 
Near Malham, 1837 — W. Wilson. Settle — W. Borrer. In an old 
quarry at Welburn — R. Spruce. 
4. D. Bruntoni, Am. Fr. May.. 
Cynodontium, B. and S. High force and Cronkley scarrs, Teesdale. 
Newtondale — R. Spruce. Bocks near the Strid, Bolton Abbey. 
5. D. eigidulus, Hediv, Fr. Autumn and Winter. 
Trichostomum, Smith. Walls and rocks; common. Weissia crispula, 
Flora, 132, is a form of this species — R. Spruce. 
6. D. trifaritjs, Swartz. Fr Autumn and Winter. 
T. tophaceum, Brid. Crambeck, Castle Howard — R. Spruce. Wet 
rocks at High-green wood, Heptonstall. 
7. D. ckispulus, Eng. FI. Fr. Summer. 
Trichostomum , Bruch. Cliffs north of Scalby mills, near Scarborough 
— R. Spruce. 
' 8. D. brachydontius, Wils. Fr. Summer. 
T. mutabile, Bruch. Scalby mills, near Scarborough — R. Spruce. 
9. D. capillaceus, Schrad. Fr. Spring, Summer. 
Distichium , B. and S. Near Wince bridge, Teesdale — R. Spruce. 
Saltersgate beck — M. B. Slater. Aysgarth Force, Wensleydale — A. 
Watson. Ayton moor, Cleveland — W. Mudd. Bocks at the Strid, 
Wharfdale. 
10. D. flexicaulis, Schwaegr. 
Trichostomum, B. and S. D. longirostris, Eng. El. (not W. and M.) 
Frequent on rocks, walls, and banks, in the limestone districts ; but 
always barren. 
11. D. heteromallus, H. and T. Fr. Autumn, 
T. homomallum, B. and S. 
12. D. pusillus, Hook. Fr. Spring. 
T. tortile, Schrad. In the park quarry at Castle Howard — R. Spruce, 
H. Ibbotson. 
13. D. cylindricus, Hook. Fr. Nov. 
Castle Howard park quarry — R. Spruce. 
XVI. TBICHOSTOMUM. 
1. T. lanuginosum, Hedw 
Racomitrium, Brid. 
2. T. canescens, Hedw. 
Racomitrium, Brid. 
* Is not this “ Grimmia recurvifolia, Wils., MSS." ? I have a specimen so named, collected by Spruce 
at the station quoted above. J.G.B, 
Fr. Spring. 
Fr. Spring. 
Strensall moor, near York — H. Ibbotson. On 
