Fontinalis.] MUSCI-PLEUROCARPI-PERISTOMI. 73 



v. 2. n. 51. Drum. Muse. Scot. v. 1. n. 64.—lVecIiera heteromalla, 

 Hedw. St. Cr. v. 3. t. 15. Turn. Muse. Bib. p. 102. Fl. Brit, 

 p. 1274. E. Bot. t. 1180. Schwaegr. Suppl. v. 1. P. II. p. U6. 



— Cryphcea heterom. Brid. — Fontinalis secunda, Dicks. — Sphag- 

 num arboreum, Linn. — Dill. Muse. t. 32. f. 6. 



Trunks of trees, England, and south of Ireland, plentiful, (Wils.): 

 rare in Scotland. Fr. April. — Stems slightly branched, diffuse. Leaves 

 imbricated on every side, concave, the nerve disappearing below the 

 point, the margins recurved and quite entire. Perichcetial leaves as long 

 as the sessile oblong-ovate capsule, broadly ovate and suddenly acumin- 

 ated, almost cuspidate, having a nerve reaching to the point. 1 id conico- 

 acuminate. Cah/ptra mitriform, brown ; somewhat fringed at the margin. 

 At the suggestion of Mr. Wilson, who finds the inner peristome of D. 

 splachnoides to arise from a membrane as in Iloolceria, I have referred 

 that species to the latter Genus. 



B. Inner peristome composed of cilia united beloio into a 

 membrane or connected by transverse bars. 



37. Fontinalis. Linn. Water-Moss. 



Seta lateral. Peristome double: the ou'er of 16 teeth; the 

 inner of 16 cilia, connected by transverse bars and forming a 

 reticulated cone. Calyptra mitriform. (Muse. Brit. cd. 2. t. 3.) 

 Named thus from its being an aquatic Genus. 



1. F. antipyretica, Linn, (greater Water- 3Ioss); leaves nerve- 

 less broadly ovate complicato-carinate. Linn. Sp. PI. p. 1571. 



Turn. Muse. Hib. p. 190. Fl. Brit. p. 1336. E. Bot. t. 859. 

 Hobs. Br. Mosses, v. 1. n. 53. Drum. Muse. Scot. r. 2. //. 59. 

 Schwaegr. Suppl. v. 1. P. II. p. 307. Muse. Brit. ed. 2. p. 141. 

 t. 22.— Dill. Muse. t. 33. /. 1. 



Rivers and stagnant waters. Fr. June. — Stems a foot or more long, 

 fluitant. Leaves broadly ovate, trifarious, decidedly complicato-carinate, 

 rarely plane, as in a var. found by Mr. Harvey, easily splitting at the 

 keel. Fruit principally on the lower part of the stems. Perivhcctium 

 large; its leaves resembling closely imbricated scales which cover the 

 Capsule, and are of a roundish form, concave, nervele— , generally erose 

 at their apices. Capsule elliptical. Ltd conical, acute. 



The specific name was given to this plant by Lhuuciis, in allusion to 

 the use made of it by the Swedish peasantry, who fill npwith it the 

 spaces between the chimney and the walla in their houses, and thus 



l>\ excluding the air prevent the- action of the lire- 



2. P. sguarrdsa, Linn, (alpine Water-Mo**)} leave- nerve- 

 Less lanceolate acuminate plane. Linn. Sp. PL p. L571. H&dw. 

 ,S7. Cr. r. 3. t. 12. Turn. Muse. Hib. p. 199, Fl, Brit p. I 



/;. Bot, t. 1861. Hobs. Br. Mosses, v. 2. n. 52. Drum, Muse. 

 Sent. r. 2. /.'. 60. Muse. Brit. ed. 2. p. 142. /. 22. 

 Alpine rivulets, abundant. FV. June— Much smaller than the last, 



and as I am now satisfied, quite distinct from it in its narrow m-wr com- 

 plicate l< fl 



8. V. eapilldeea, Dicks, (bristly Wiater-Moss); lee/res far 

 nished with i nerve slightly concave subulate, Dicks. Cr. 



