Muscti Exor:ci1.—Browniani. 
DAWSONIA POLYTRICHOIDES, 
Gen. Guar. Perist. penicillatum, ciliis numerosissimis 
capillaribus rectis equalibus e capsule parietibus co- 
lumellque ortis. Caps. hine plana, inde convexa. 
Calypt. ext. e villis implexis, int. apice scabra. Br. 
D. nara Brown in Linn. Trans. v. 10. p.316. 
3.f.1. (Tas. CLXIL.) 
Has. Ripe subumbrose rivulorum, ad radices oye in vici- 
nitate Portus Jackson, Nove Hollandiz, D. Brown. 
Radix tomentosa.  Caules 3—4-unciales, simplices, erecti, 
flexuosi, basi nudiusculi, superne foliosi. Folia e basi dilatata, 
membranacea, fusca, lineari-subulata, supra plana, subtus 
convexa, patentia, siccitate erecto-appressa, fusco-viridia, mar- 
gine dorsoque spinoso-denticulatis, nervo obsoleto, vix striato. 
Seta terminalis, vix unciam longa, rubra. Capsula madore 
horizontaliter reclinata, siccitate erecta vel paululum inclinata, 
rufo-fusca, supra plana vel basin versus etiam concava, subtus 
convexa, ore paululum contracto marginato. Calypira du- 
plex; ext. e villis intertextis rufo-fuscis; iné. triplo minor, 
tum, apice ste superioris mucrone subrecurvo. —— 
minum penicillatum, densum, album, e margine capsule apice 
que columellz ortum ; ciliis numerosissimis, capillaribus, a 
lulum flexuosis, inarticulatis. Columella angusta, corrugata, 
I am happy to be able to figure this moss in the same number 
with the Lyellia, they having many points in common, especi- 
ally the form of their capsules, although in the curious structure 
of the peristome and the shape of the operculum I know of 
nothing which resembles the Dawsonia. The male flowers I 
have never seen; but Mr. Brown has figured them, and given a 
most elaborate plate and description of the whole plant in the 
tenth volume of the Linnean Transactions. 
Fig. 1,1, —_ nat. size. Fig. 2, leaf. MB: 3, capsule 
when dry. Fig. 4, ditto oF a moist state. Fig. 5 , operculum. 
Fig. 6, inner calyptre, ig 75 capsule cut open to show t 
columella and the ce ‘of the peristome, Fig. 8, cilia of the 
peristome.—magn. 
