Moore — On the Mosses of Ireland. 
349 
12. DicjEODONTiuM. Scliimp. 
Capsule on a long pedicel, ovate or obovate. Operculum conico- 
rostrate ; annulus none. Peristome single, of 1 6 teeth, cleft to 
the middle and connected at base. Calyptra small, cuculli- 
form, fugacious. Leaves imbricated, broadly acute or oblong ; 
areolation dense, subquadrate. Inflorescence dioicous. 
1. D. pellucidum (Schim^.). Synop. Muscor., p. 65.Eriol. ItaL, p. 489. 
Dicranum pellucidum. (Hedw.). Bryol.Europ., vol. i., Monogr. 
p. 16, tab. 50, 51. BryoLBrit, p. 67, tab. 17. Turner. Muscol. 
Hib., p. 68. 
Yar. 7. D. flavescens, Eng. Bot., tab. 2263. Muscol. Brit., Ed. 2, p. 
98. 
Hab. By the sides of rivulets and on wet rocks. Erequent in many 
parts of Ireland, especially in hilly districts. Yar. 7. very 
fine on the limestone rocks at Benbulben, Sligo. 
13. DicKAi^uM. Hedw. 
Capsule oval oblong, or cylindrical, long pedicellate, erect or cernu- 
ous, the neck sometimes gibbous or apophysate. Peristome 
single, of 16 linear-lanceolate, equidistant teeth, joined at the 
base, cleft half way or more into equal segments. Calyptra 
cuculliform. Leaves lanceolate or lanceolate- subulate, costate 
and not rarely falcate- secund; areolation small and somewhat 
dot-like, except the marginal cells at the base, which are often 
large and quadrate. Inflorescence monoicous. 
Diagnosis of Species. 
* Capsule elongated, nearly erect. 
Capsule nearly cylindrical, slightly curved, . 1. D. Scottianum. 
Capsule oval, strumous when dry ; annulus 
simple, 2. D. Blyttii. 
Capsule more or less cernuous. 
Leaves not undulated, . . . . 3. D. fuscesceks. 
Capsule sub-erect, not furrowed ; annulus 
none, 4. D. scop^ietum. 
Capsule subcylindrical, subcernuous; lid 
with a long beak, . . . . 5. D. flagellaee. 
Capsule cernuous, incurved, furrowed^ when 
dry, . . . . . . 6. D. majus. 
Leaves undulated, . . . . . 7. D. Bonjeanii. 
