Bryum H ORNUM. SwANS-NECK B RYUM. 
MNIHM Lmneei Gen. PI. Ckyptogamia Mbsci. Mafculus flos pedonculatus. Femineus flos in difthao 
ficpius individuo. 
Raii Synopfis Gen. g. Musci-» 
MNIUiM hornum antheris pendulis, pedunculo curVato, furculo flmplici, foliolis margine fcabris. Lmneri S } Jl. 
Vegctab. 796. 
BRYUM hornum furculo capitulifero rtmofmfculo : flellifero fimpUci, primordialibus plumulofis. Necker. Method. 
Mufc. p. 2x5. 
MNIUM foliis lanceolatis, imbricatis, capfulis pendulis cylindricis obtbfis. Haller, hifl. heh. 3. p. 54. 
MNIUM hornum ferratifolium. Weis Cryptogam. 149. 
BRYUM antheris oblongis nutantibus, pedunculo curvato, foliolis ovatis, margine fcabris. Hudfon. FI. 
■Angi. p. 415. 
BRYUM ftellare hornum (ylvarum, Capfulis 'magnis nutantibus'. Dillen. mufc. 402. 
BRYUM nitidum capitulis majoribus reflexis, calyptra imum vergente, pediculis oblongis e cauliculis novis 
egredientibus. Rail Syn. p. 102. 51. 
Ad majores accedit hsec (pecies; 
CAULES unciales aut biunciales, radiculis ferrugineis, f 
valde tomentofis inftru&i, eredi, plerumque ra- £ 
mofi, pedunculiferi et ftelliferi, ad balin rubi- | 
eundi, Stellula; et Pedunculi, nunc feorfim, f 
nunc ex eadem radice proveniunt, unusque aut | 
plures Surculi e bafi caulis femper fere naf- | 
cuntur. f 
FOLIA faturate viridia, ovato-lanceolata, fubereda, pel- | 
lucida, ad lentem minute ferrata, fig. 1 ; nervo * 
medio didin&o et in mucronem brevem edudo, | 
in furculis fcemineis didis apice ffellatim expan- | 
fa, et paulo latiora, in junioribus anguftiora et f 
cauli magis adprefla. | 
'% 
PEDUNCULI terminales, biunciales, rubra», verfus a- f 
picem ut rede obfervavit Dillenius inftar £ 
colli olorini incurvati. 
i 
CAPSULvE oblonga, tumida, virides, nutantes, lente £ 
auda, fg. 7; per longitudinem feda ut Re- | 
ceptaculum confpiciatur,^. 9 ; Calyptra i 
longa, acuminata, caduca, fg. 6 ; Operculum | 
breve, flavefeens, fig. 8 ; Ora ciliata. | 
This fpecies comes near to the larged: fize. 
STALKS from one to two inches in height, furnilhed 
with roots which are of a ferruginous colour, 
and covered with a kind of wooly fubftance, up- 
right and generally branched, reddidi at bottom, 
producing both Pedunculi and Stellula, 
which pfoceed fometimes from the fame, fome- 
times from different roots, and one or feveral 
Surculi ufually fpring from the bottom of the 
(talk. 
LEAVES of a deep green colour, of an oval pointed 
(hape, nearly upright, pellucid, when viewed 
with a glafs finely Jerrated at the edges , fig. 1 ; 
the midrib diftind, and terminating in a fhort 
point, on the tops of thofe ftalk, which are con- 
fidered as female, they are expanded like a little 
(far and lomewhat broader, in the young Ihoots 
they are narrower and prefled cloler to the ftalk. 
PEDUNCLES fp ringing from the fummit of the ftalks, 
about two inches in height, bent near the top 
like a Swans Neck as Dillenius has properly 
obferved. 
CAPSULES oblong, tumid, of a green colour and droop- 
ing, magnified,^. 7; cut longitudinally through 
the middle that the Receptaculum maybe feen, 
fig. 9; the Calyptra long, pointed, andfoon 
falling off, fig. 6; the Operculum fhort, of a 
yellowifh colour, fig. 8; the Mouth of the 
Capfule ciliated. 
On examining with a Microfcope the tops of thofe Stalks which are called Stellula feminea, fig. 2, and which are 
confidered by many as the female parts of the frudification in this Mofs, there appeared in the center of the 
Stellula, a great number of fmall upright bodies, or Corpufcles, of two kinds, fig. 3, the one white, pellucid, and 
jointed ; the other of a greener colour, (horter, and of an oblong oval (hape, vid. fig. 4, 5. They do not ap- 
pear to me to have any thing in their Strudure, in the lead; fimilar to any of the parts of frudification in 
plants, what their real ftrudure and ufes are, may perhaps be difcovered by future obfervations. 
This fpecies occurs not unfrequently on moifl: banks in Woods, as in Charlton Wood, and the Woods about 
Hampfiead, producing its Frudifications in February and March. 
As the Capitula pulverulenta of Dillenius, or Spharophylli as they are called by Necker, are entirely wanting 
in this Mofs, and as the exiflence of thofe lingular little heads leems very obvioufly to diftinguilh the Genus 
Mnium , I have chofeu rather to arrange it with Dillenius and Hudson among the Bryutns, than with Linn aus 
among the Mniums ; for if we make Mniurns of all the Mofles which have Stellula, we (hall involve ourfelves 
in confiderable difficulties : many of thofe Stellula are indeed very obvious, as in the prefentone, but in others 
they are very obfeure, fo that it is difficult to fay whether they exifl: in them or not ; but if they were ob- 
vioufly to be diftinguilhed, there is not the lead: likenefs between a Stellula and Spharophyllum, why then unite 
in one Genus plants which have fuch very different appearances ? Would it not be better to confider the Mofles 
which produce Spharophylli or little balls as Mniums, according to Dillenius, and divide the Bryums, if necef- 
fary, into two families, viz- fuch as have obvious Stellula, and fuch as have none ? 
The name of rough Bryum, which Mr. Hudson feems to have given to this Mofs for brevity’s fake, con- 
veys an idea with which this Bryum does not feem perfedly to correfpond, it having no roughne'fs except at the 
edges of the leaves, which are minutely ferrated: I have therefore adopted Dillenius’s name of Swans Neck 
Bryum, as being juftihable from the lingular fhape of the Peduncles, and being more likely to be remember- 
ed from its (hiking analogy. 
