MUSCI. — W. MITTEN. 
26 
siiiente, margine apicetn versus clenticulata ; superiora cluplo latiova, a Imsi erectiore 
scnsim recurva, patentia, apice cum nervo in acumen longitudine variabile sensim 
educto, margine superne serrulata. 
Koval Sound ; a single stem, Eaton. Two small stems amongst other mosses 
without precise locality, Moseley. 
The small quantity found of this moss w'ould be insufficient to give any idea of 
what might bo supposed to he the usual appearance of the species were it not 
evidently a close congener to a very ambiguous moss found on thatch in the south 
of Britain, and which has been known first as a supposed gemmiferous variety of 
Leptodontimn jle.v folium (Sm.), and since as Eidymodon gemmascens, Mitt. MSS. 
Krom this the Kerguelen species dillers in the form of its lower leaves. In the 
British moss all the leaves are acuminate and tipped with a globular mass of indi- 
vidually ohovate green gemmae of a loose cellular substance, and gemmae of the 
same form are present on the points of some of the upper leaves of S. uustralis. 
Both species appear to be small, the British one is seldom more than half an 
inch in height ; the entire plant, excepting a few rootlets, and the rarely present 
archegonia, which are red, is of a yellowish green. In the dry state it affords 
nothing to attract observation, hut when wet, every leaf being terminated by its 
mass of gemmoe, it is unlike any other European moss, excepting the more robust 
Orthotriclmm phyllanthum (Brid.). It comes nearer to some species of Strepto- 
pogon; the areolation of the leaves of Calymperes or of Syrrhopodon are widely 
different. The genus Slreplopogon founded on .S', erythrodontus (Tayl), with the 
additional species discovered in the Quitenian Andes by Dr. Spruce, and those from 
the Bogotian Andes by Lindig and Weir, contains a number of species all seeming 
to have a tufted Orthotrichoid habit. They differ among themselves considerably, 
some of the Andean species having the leaf with a callous margin which is wanting 
in others, and the capsule immersed or shortly exserted from poricha3tial leaves 
which are not very different from the cauline. S. mnioides, Schw. t. 310 (Barlmla'), 
however, has the perichsetium leaves much elongated, and different from those of 
the stem, simulating those of Ilolomitrium, and on this account should stand apart 
from the other species, thus — 
Streptopogon, Wils. Theca in perichajtio e fohis caulinis subsimilibus im- 
mersa, emergens, vel breviter exserta. Calyptra breviter multifida. 
Caeypiopogon, Mitt. Theca in perichtetio e foliis elongatis a caulinis diffor- 
mibus exserta. Calyptra profunde pluriflda. 
The first group contains all the species of w'hich the fruit is known, and which 
correspond to the typical S. erythrodontus, together with probably some others which 
are known only in a barren state, including the two ambiguous species S. australis 
and (S', gemmascens. 
The second group consists of S. mnioides alone. 
2. Streptopogon? marginatus ; — Schistidium marginatum, Ilook.f. and 
Wils. Flor. Antarct., 399, 1. 151. f. vi. 
** 
D 
