ACOTYLEDONS. MUSCI. HypllUtn. Ml 



1 . H. liLcens, leaves broadly ovate entire obtuse nerveles?. Muse. 



Brit. p. 89. /. 27. Hypnum lucens, Lig/itf. p. 743. 

 HAB. Moist banks in woods and among rocks. 

 Leaves with very large cellules. Capsule horizontally inclined, dark 



purple brown, reticulated. Calyptra pitted, almost white. 



30. HYPNUM. 



Fnulstalks lateral. Perislome double; the exl. of 16 teeth; 

 the interior of a membrane cut into 16 equal segments, with 

 iil iform processes frequently placed between them. Calyptra 

 dimidiate. Muse. Brit. p. 91. /.3. 



Div. I. Stems (taken in conjunction with the leaves) plane. 

 SECT. T. Capsules erect. 



1. H. trichomanoides , leaves broadly scymetar-shaped serrated 

 at the point, nerve reaching to the middle of the leaf, capsule 

 ovate erect, lid rostrate. Muse. Brit. p. 91. /. 24. 



HAB. Trunks of trees, not rare. 



2. H. complanatum, leaves oblong apiculate entire nerveless, 

 capsule ovate erect, lid rostrate. Muse, Brit. p. 91. /. 24. 

 Ligktf. p. 742. 



HAB. Trunks of trees, common. 



These two species have the habit of Neckera. 



SECT. II. Capsules cernuous or inclined. 



3. H. riparium, leaves ovato-lanceolate acuminated entire the 

 nerve reaching nearly to the summit, capsules oblong cernuous, 

 Hd conical. ^Musc. Brit. p. 92. t. 2 1. Ligktf. p. 760. 



HAB. Banks of rivers and lakes, and spots occasionally overflowed 

 with water. 



4. H. imdulatumjlQaves ovate acute transversely undulated, with 

 2 faint nerves at the base, capsule oblong furrowed arcuato- 

 cernuous, lid rostrate. Muse. Brit. p. 92. t. 24. Lightf. 

 p. 744. 



HAB. Woods and dry heathy places. Plentiful in the Highlands. 



5. H. denticulatum, leaves ovate sometimes approaching to lan- 

 ceolate more or less acuminated having 2 short nerves at the 

 base, capsule oblongo-cylindraceous inclined, Hd conical. 

 Muse. Brit. p. 92. t. 24. Lightf. p. 74 1 . 



a. angustifoliitm, leaves ovato-lanceolate distant quite plane. 



H. deriticulatum. Linn. 

 ft. obtusifolium, leaves ovate more or less obtuse slightly concave. 



H, Doniannm, E. B. 

 HAB. Principally in woods. /3. Among the mountains, G. and D. Don. 



Cairn -gorum, Mr. Winch. 



