112 A PL O PER 1ST CM I. [.Leucodon. 



as separate, filiform, and jointless as in some species of Didy- 

 modon. 



L. sciuroides ; leaves closely imbricated ovato-cordate acuminate 

 striated, capsule oblong. (TAB. XX.) 



Leucodon sciuroides. Schwaegr. Suppl v. 2. p. 1. Hook. Fl. Scot. 

 P. II. p. 135. Funck, Deutschl. Moose, t. 22. n. 1. Hobson, Brit. 

 Mosses, v. 1. n. 51. Brid. Meth. p. 134. Arn. Disp. Muse. p. 50. 



Leucodon Morensis. Schwaegr. Suppl. v. 1. P. II. p. 2. and v. 2. 

 P. I. t. 125. Brid. Meth. p. 134. 



Leucodon alopecurus? Brid. Meth. p. 135. 



Dicranum sciuroides. Swartz. Smith, FL Brit. p. 1215. Enyl 

 Bot. t. 1903. 



Trichostomum sciuroides. Mohr. 



Pterogonium sciuroides. Turn. Muse. Hib. p. 32. 



Hypnum sciuroides. Linn. Sp. PI. 1596 Dill. Muse. t. 4 \.f. 54. 



HAB. Trunks of trees, in England, common. In Scotland 

 rare: near Invermoriston, where it was found by 

 Messrs. Grevitte and Hooker, is the most northern 

 habitation known for this plant. 



Stems long, creeping on the bark of trees. Branches ascend- 

 ant, from one to two or three inches in length, simple or 

 ramified; often swelling towards the centre, and sharper to- 

 wards the point, sometimes cylindrical ; leaves concave, nerve- 

 less, but striated, the margins entire ; those of the perichsetium 

 long, cylindrical, sheathing, especially the interior ones, which 

 are half as long as the fruitstalk, and closely enveloping it. 

 Fruitstalks lateral, about an inch long ; lid rostrate. 



Several extra-european species of this beautiful genus have 

 now been figured in the Musci Exotici of Dr. Hooker. The 

 Leucodon canariensis of Schwaegrichen belongs to this genus ; 

 though it is figured in the work just mentioned under the name 

 of Hedwigia Schmidtii. Its peristome has been detected, 

 lodged in the interior of the fallen operculum, by Mr. Arnott. 

 Bridel and Schwaegrichen do not appear to have observed any 

 thing but the remains of the peristome, which Hooker has incor- 

 rectly described as a membranous ring. With regard to the 

 L. Morensis of Schwaegrichen, (Hypnum Morense, Schleicher,) 

 we have numerous specimens received from Schleieher himself, 

 and others that we have gathered in Switzerland, and can 

 safely assert that they differ in nothing from the common 





