76 ORTHOTRICHUM. 



by Schwaegrichen in his Supplement. Hedwig is particu- 

 larly unfortunate in his figures of Orthotricha in the Stirpes 

 Cryptogamiccs. In the present instance the highly mag- 

 nified capsule in the plate above referred to (/'. 9, 10.) has 

 a great resemblance to that in the following species, whilst 

 that of the inner fringe agrees in colour with our plant; yet 

 its form is just intermediate, being not sufficiently torulo^e 

 for O. striatum, and too much so for O. LytUii; and the 

 rest of the figures, especially from the exserted fruit- 

 stalks, are very different from either of the species now men-, 

 tioned. 



10. 0. Lyellii; stems elongated, much branched j leaves long, 

 linear lanceolate, recurvo-patent, much crisped when dry;i 

 capsule oblong, striated; peristome with 16, rather broad K 

 distinctly jointed ciliary, processes ; calyptra very hairv. 

 (TAB. XXII.) 



HAB. On trees in the New Forest, Hants. JV/r. Lyell. 



This fine species, to which we have given the name of 

 its estimable discoverer, has many points in common with 

 Q. slriatum ; and yet is at first sight even so easily distin- 

 guished by its long narrow and crisped leaves and sessile 

 fruit, that we think no one will hesitate in pronouncing it 

 as decidedly marked a species as any in the genus. 



The stems are from two to three and even four inches in 

 length, and are certainly the largest of the family, much 

 branched ; with the branches, when growing on the trunks 

 of trees 5 turned upwards in a dry state, as in Leucodo?i sciu-: 

 roides. Below they are destitute of foliage in consequence 

 of the plant growing in a crowded manner; above densely 

 clothed with long, linear-lanceolate, recurvo-patent, undu- 

 Jate, and when dry much crisped leaves, whose margins are 

 not (as in almost all the other species) recurved, but, if any 

 thing, rather incurved. Their colour is of a deep yellowish 

 green. On various parts of their surface the Conferva Or- 

 tlwtrichi grows in abundance, so that they appear strewed,; 

 with a brown powdery substance. The fruitstalks are short, 

 wholly immersed in the leaves, as are the capsules for ai 

 great portion of their length. These ar-e of an oblong 

 figure, with a remarkably long appphysis, which is smooth, 

 and shrinks much in drying ; while the capsule itself is 

 at all times, when ripe, distinctly furrowed; whereas in 

 0. striatum it is ovate, and always smooth. Lid shortly 

 rostrate. Peristome; the exterior of 16 long teeth, stand- 

 ing erect when moist, recurved when dry; they are marked 



