llr/pnum.] MUSCI-PLEUROCARPJ- PERISTOMA 77 



II. Stems (taken in conjunction with the leaves) more or less 



cylindrical, never plane. 



1. Leaves spreading on all sides (not secund). 



A. Leaves uniform in their direction (not squarrose). 



a. Nerve reaching to or beyond the point, 



* Leaves without serralures. 



6. H. medium, Dicks, (long-headed. Feather- Moss); leaves 

 ovate obtuse concave entire slightly falcato-secund, the nerve 

 reaching to the summit, capsule cylindrical nearly erect, lid 

 conical. Dicks. Cr. Fasc. 2. p. 12. Turn. Muse. Hib. p. 142. 

 Fl. Brit. p. 1280. E. Bot. t. 1274. Hobs. Br. Mosses, v. 2. 

 )i. 55. Muse. Brit. ed. 2. p. 154. t. 24. — IT. inundatum, Dicks. 

 — Turn. Muse. Hib.—Fl. Brit. p. 1282. E. Bot. t. 1022. 

 — Leskea polycarpa Ehrh. Cr. — Hedw — Schwaegr. Suppl. v. 1. 

 P. II. p. 171. 



Trunks of trees, particularly of Alders, near the ground. Fr. Apr. — 

 V\ hole plant of a dense growth and lurid colour; leaves opaque with the 

 margins recurved, often falcato-secund, so that it has as great a claim 

 to be ranked in the groupe " foliis secundis," as in the present divi- 

 sion -. and it is in other respects nearly allied to H. atru-virens. 



7. H.tenellum, Dicks, (tender awl -leaved Feather- Moss); leaves 

 fasciculated erect lanceolato-subulate entire, their nerve reaching 

 to the point, capsule ovate cernuous, lid rostrate. Dicks. Cr. 

 Fasc. 4. t. 11. / 12. Turn. Muse. lid,, p. 170. Fl. Brit. p. 

 L808. E. Bot. t. 1859, (figure of the leaf incorrect). Drum. 

 Muse. Scot. v. 2. n. 63. Muse. Brit. ed. 2. p. 155. /. 24.— H. 

 Algerianinii, Brid. — Schwaegr. Suppl. v. 2. p. 10 1. t. 144. 



On rocks, especially such as are calcareous, and on old walls. Fr. 

 Winter. — The leaves are clustered or fasciculated in a peculiar manner 

 in this species: by this character and by the shape ami texture of its 

 leaves and by the rostrate ltd, it maybe distinguished from //. serpens ; 

 and from 77. populeum b\ its narrower entire leaves and long <>j>ereulum. 

 Mr. Wilson, however, has found a var. with serrulated foliage, on moist 

 rocks, Aug! 



8. II. serpi/is. Linn, (cree ping whiie^veUed Feather-Moss)} 

 Leaves ovato-lanoeolate rather obtuse patent entire) the nerve 

 reaching to the summit or abbreviated, capsule 03 lindrical curv- 

 ed oemUOUS, lid conical. Linn. Sp. PI. p. L596. 'Furn. Muse. 



11,1,. p. L68. Fl. lint. r . 1306. /•:. Hot. t. L087. Hobs. Fr. 

 Mosses\ e. 1. //. 70. Dm in. Mum. Scot v. l. n. 77. Schwaegr. 



Suppl. ,-. 1. r. II. p. 260. Muse. lint. ,d. 2. j>. 156. t. 24.'— 



II. flueuitde. Funek. — ll.d urn , Schnid. — //. emit, a turn ami II. 



tpinulosum, I lulu. II. subtile^ Dicks. Furn. -Sin. in Fs\ 



lint, and in /•/. BoL & 2496, (not II, d,r ).— D,ll. MuSC t \2. 



t. 64. 



Moist bank-, trunks of treat, on pales and deca\cd wood in various 



situations. Fr, May.— 1 saves with Schwaecrichen in ssjiafi " %IX 



